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Journal articles on the topic 'Indicator (signal) index of water quality'

Author: Grafiati

Published: 28 May 2022

Last updated: 30 July 2025

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1

Snelder, T. H., C. Fraser, S. T. Larned, R. Monaghan, S. De Malmanche, and A. L. Whitehead. "Attribution of river water-quality trends to agricultural land use and climate variability in New Zealand." Marine and Freshwater Research 73, no. 1 (2022): 1. http://dx.doi.org/10.1071/mf21086.

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Trends at 1051 river monitoring sites across New Zealand incrementing annually for time windows of 10 and 20 years over the 28-year period ending 2017 were assessed from regular observations of six water quality variables. Between-site variation in trend strength and direction was modelled as a function of an indicator based on the Southern Oscillation Index (SOI) and the mean of and changes to catchment: (1) stocking intensity associated with pastoral livestock; and (2) area associated with plantation forest. The SOI indicator made consistent contributions to the models for the 10-year window

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Nirel, P. M. V., and J. Lazzarotto. "Testing of conductivity/calcium and rubidium/strontium ratios as indicators of the chemical stability of a river: comparison with a biological indicator." Water Science and Technology 52, no. 12 (2005): 291–96. http://dx.doi.org/10.2166/wst.2005.0487.

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It is customary to detect pollution in a water flow by monitoring the increase of sensitive elements concentrations (NH4+, PO43−, NO3−…). However, concentrations are dependent on the flow rate and these compounds are not conservative, implying a concentration decrease downstream leading to false negative diagnosis of pollution impact. The use of elemental ratios of conservative compounds should diminish these pitfalls. We then thought of the χ/Ca (conductivity/calcium) and Rb/Sr (rubidium/strontium) ratios as water chemical stability indicators to clearly identify and discriminate point from d

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Kondo, Yasuo, and Youji Miyake. "A Study on Anomaly Detection of Water-Soluble Coolant Using Internal-Sensors." International Journal of Automation Technology 16, no. 2 (2022): 175–81. http://dx.doi.org/10.20965/ijat.2022.p0175.

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The quality of water-soluble coolant is managed based on the maintenance schedules provided by a manager including periodic replacement of coolant. Post-maintenance is adopted when an anomaly is detected in the daily measurements. However, the reliability of management is dependent upon on the competence and experience of an operator. Condition monitoring allows users to detect critical changes in a water-soluble coolant. In contrast to the conventional method, condition monitoring can be assumed to be continuous and remote using ICT technologies. In this study, the spindle motor and NC data w

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Trianto, Manap, Nuraini Nuraini, Sukmawati Sukmawati, and Moh Dahri Kisman. "Keanekaragaman Genus Serangga Air sebagai Bioindikator Kualitas Perairan." Justek : Jurnal Sains dan Teknologi 3, no. 2 (2020): 61. http://dx.doi.org/10.31764/justek.v3i2.3562.

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Abstract: Aquatic insects are groups of insects that most of their life in the water body. Aquatic insects are part of macrozoobenthos. Aquatic insects are very important roles in the ecological system due to various reasons. Insects are bio-indicators of water in water bodies such as rivers. The aims of the study were to determine the diversity and the potential roles of aquatic insects in the Kali Batu Anyar ecosystem. The research method used purposive random sampling method. The sampling of the data was conducted by Surber nets. The samples obtained were identified and analyzed using the S

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Yurchenko, Vera Vitalievna, Maria Georgievna Biryukova, and Diana Yurievna Lukinа. "Factors of biodiversity as criteion for evaluating ecological status of water bodies in Astrakhan." Vestnik of Astrakhan State Technical University. Series: Fishing industry 2019, no. 4 (2019): 7–13. http://dx.doi.org/10.24143/2073-5529-2019-4-7-13.

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The article presents an assessment of the quantitative and qualitative composition  of zooplankton in the zoocenosis of the water bodies of Astrakhan. There have been analyzed  bioindicators that allow to determine the structure of zooplankton during the research period.  A comparative characteristic of the reservoirs has been carried out, according to the indicators  of species density (species richness), complexity of the community structure and dominating species. Samples of zooplankton collected in the autumn of 2016 and 2017 in the water bodies within the city limi

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Morales-Romero, Guillermo, Adrián Quispe-Andía, Nicéforo Trinidad-Loli, et al. "Automating the mixing and spraying stage of the instant mashed potato process." Indonesian Journal of Electrical Engineering and Computer Science 24, no. 2 (2021): 771. http://dx.doi.org/10.11591/ijeecs.v24.i2.pp771-779.

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<p>The article describes a control logic used to automate the mixing stage of the instant mashed potato process, in order to improve the quality of the final product. Thus, initially the characteristics of the automated process are detailed, specifying the programming logic on the programmable logic controller, to later demonstrate through a data collection process the percentage of improvement in the quality of the final product from the perspective of the users. Indicators: percentage of humidity in the mixing stage, water absorption index (IAA), water solubility index (ISA) and hydrog

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Anderson, Martha C., Christopher Hain, Brian Wardlow, Agustin Pimstein, John R. Mecikalski, and William P. Kustas. "Evaluation of Drought Indices Based on Thermal Remote Sensing of Evapotranspiration over the Continental United States." Journal of Climate 24, no. 8 (2011): 2025–44. http://dx.doi.org/10.1175/2010jcli3812.1.

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Abstract The reliability of standard meteorological drought indices based on measurements of precipitation is limited by the spatial distribution and quality of currently available rainfall data. Furthermore, they reflect only one component of the surface hydrologic cycle, and they cannot readily capture nonprecipitation-based moisture inputs to the land surface system (e.g., irrigation) that may temper drought impacts or variable rates of water consumption across a landscape. This study assesses the value of a new drought index based on remote sensing of evapotranspiration (ET). The evaporati

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Davydov, O. A., та D. P. Larionova. "САНІТАРНО-ГІДРОБІОЛОГІЧНА ХАРАКТЕРИСТИКА ОЗЕРА ВЕРБНЕ ЗА МІКРОФІТОБЕНТОСОМ". Scientific Issue Ternopil Volodymyr Hnatiuk National Pedagogical University. Series: Biology 77, № 3 (2019): 46–51. http://dx.doi.org/10.25128/2078-2357.19.3.6.

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Assessing ecological and sanitary state of aquatic ecosystems, including their trophic and saprobiological status and impact of human factors, is among key objectives in modern hydrobiology. Apart from common hydrobiological methods (identifying species compositions, calculating algae number and biomass etc), there are specific methods for the assessment of aquatic ecosystems. Bioindication, which is based on aquatic organisms’ response to environmental factors, including human factors, is the most important. Microphytobenthos is highly sensitive to changes in natural and human fac

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Wattelez, Guillaume, Cécile Dupouy, and Farid Juillot. "Unsupervised Optical Classification of the Seabed Color in Shallow Oligotrophic Waters from Sentinel-2 Images: A Case Study in the Voh-Koné-Pouembout Lagoon (New Caledonia)." Remote Sensing 14, no. 4 (2022): 836. http://dx.doi.org/10.3390/rs14040836.

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Monitoring chlorophyll-a concentration or turbidity is crucial for understanding and managing oligo- to mesotrophic coastal waters quality. However, mapping bio-optical components from space in such shallow settings remains challenging because of the strong interference of the complex bathymetry and various seabed colors. Correcting the total satellite reflectance signal from the seabed reflectance in ocean color with high resolution sensors is promising. This article shows how unsupervised clustering approaches can be applied to Sentinel-2 images to classify seabed colors in shallow waters of

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S V HEMANTH, M SRAVANTH, and R DHANUSH. "WATER QUALITY INDEX PREDICTION." international journal of engineering technology and management sciences 8, no. 3 (2024): 236–40. http://dx.doi.org/10.46647/ijetms.2024.v08i03.029.

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Water is perhaps the most precious natural resource after air. Though the surface of the earth mostly consists of water, only a small part of it is usable, which makes this resource limited. This Precious and limited resource, therefore, must be used with care. As water is required for different purposes, the suitability of it must be checked before use. Also, sources of water must be monitored regularly to determine whether they are in sound health or not. Poor condition of water bodies are not only the indicator of environmental degradation, it is also a threat to the ecosystem. In industrie

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MAHDI, Afrah S., Ban A. ALRAZAQ, and Miathem A. SULTAN. "ASSESSMENT OF SHATT AL ARAB WATER QUALITY USING WATER QUALITY INDEX ANALYSIS." MINAR International Journal of Applied Sciences and Technology 03, no. 01 (2021): 27–38. http://dx.doi.org/10.47832/2717-8234.1-3.4.

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Water quality index (WQI) is a unique value indicator used to assess overall water quality in a single term. [1]This study aims to assess the water quality of Shatt al Arab (south of Iraq) for drinking purposes for the period 2014-2018 using the weighted arithmetic WQIR method. Samples were taken from five monitoring stations on Shatt al Arab and fourteen physical and chemical parameters were analyzed. Spatial analyses were done using the Geographic Information System (GIS) to map the water quality index results. More river parts were found to be between good and poor qualities in 2014 whereas

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Smekhova, I. E., L. V. Shigarova, P. I. Andreeva, E. V. Flisyuk, and A. S. Dzyuba. "Application of Quality-by-Design Approach to Justify the Composition and Technology of Two-component Suppositories." Drug development & registration 11, no. 4 (2022): 142–49. http://dx.doi.org/10.33380/2305-2066-2022-11-4-142-149.

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Introduction. One of the modern remedies used to treat vaginal infections are suppositories "Depantol", which have an antiseptic, regenerating effect due to the combination of chlorhexidine and dexpanthenol. The initial stage in the life cycle of any medicinal product (MP) is pharmaceutical development, a systematic approach to which implies the principle of Quality-by-Design (QbD), which is based on obtaining reliable scientific data and risk management for quality. With this approach, pharmaceutical development begins with a preliminary determination of significant factors in the creation of

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Luo, Ying, Yi Ru, Huaibo Zhao, et al. "Establishment of Mouse Models of Psoriasis with Blood Stasis Syndrome Complicated with Glucose and Lipid Metabolism Disorders." Evidence-Based Complementary and Alternative Medicine 2019 (November 12, 2019): 1–10. http://dx.doi.org/10.1155/2019/6419509.

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Background. Psoriasis has been reported as a high-risk factor for quality of life and survival rate in patients with metabolic disorder. However, there is no animal model for studying this disease. This study aimed to establish and evaluate mouse models of psoriasis with blood stasis syndrome (which is a key to psoriasis pathogenesis, according to Chinese Medicine) complicated with metabolic disorders. Method. Forty-five C57BL/6 mice were randomly divided into the blank control (Control), psoriasis (Imiquimod (IMQ)), psoriasis with metabolic disorders (IMQ + streptozotocin (STZ)), psoriasis wi

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Kondrateva, Tatiana, Tatiana Nikonenkova, and Nadezhda Stepanova. "Using Cilioplankton as an Indicator of the Ecological Condition of Aquatic Ecosystems." Geosciences 9, no. 11 (2019): 464. http://dx.doi.org/10.3390/geosciences9110464.

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We assess the quality of surface water in water bodies located in the Middle Volga region (Russian Federation). The water quality is assessed using 19 chemical compounds and cilioplankton indicators, such as the total number of species, the abundance of each species, and, based on both of them, the saprobity index and the Shannon–Weaver diversity index (H). We classify the water quality from polluted to extremely dirty by using abiotic indicators, and from conditionally clean to dirty by means of biotic indicators. Using the logistic regression method, we are able to predict the water quality

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Abdellah, Maissour, and Benamar Saad. "Impact of hydromorphological pressures on the macrophytes bioindicators of the ecological water quality in Mediterranean rivers." BioRisk 14 (May 9, 2019): 1–14. http://dx.doi.org/10.3897/biorisk.14.30319.

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One of the important tools to evaluate the ecological quality of surface water is the Macrophytes indices based on the bioindication capacity of aquatic plants. In Mediterranean rivers (France, Spain, and Portugal), the development of some macrophytes indices like l’Indice Biologique Macrophytes Rivières (IBMR), the biological metric score (BMS), as well as the Fluvial Macrophyte Index (IMF) are founded on the determination of the indicator values of the floristic reference lists. The aim of this study was to test the impact of the eco-Mediterranean differences (from one country to another) on

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Abdellah, Maissour, and Benamar Saad. "Impact of hydromorphological pressures on the macrophytes bioindicators of the ecological water quality in Mediterranean rivers." BioRisk 14 (May 9, 2019): 1–14. https://doi.org/10.3897/biorisk.14.30319.

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One of the important tools to evaluate the ecological quality of surface water is the Macrophytes indices based on the bioindication capacity of aquatic plants. In Mediterranean rivers (France, Spain, and Portugal), the development of some macrophytes indices like l'Indice Biologique Macrophytes Rivières (IBMR), the biological metric score (BMS), as well as the Fluvial Macrophyte Index (IMF) are founded on the determination of the indicator values of the floristic reference lists. The aim of this study was to test the impact of the eco-Mediterranean differences (from one country to another) on

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17

Xiong, Yanna, Tianyi Zhang, Xi Sun, et al. "Groundwater Quality Assessment Based on the Random Forest Water Quality Index—Taking Karamay City as an Example." Sustainability 15, no. 19 (2023): 14477. http://dx.doi.org/10.3390/su151914477.

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In the past few decades, global industrial development and population growth have led to a scarcity of water resources, making sustainable management of groundwater a global challenge. The Water Quality Index (WQI) serves as a comprehensive method for assessing water quality and can provide valuable recommendations at the water quality level, optimizing policies for groundwater management. However, the subjectivity and uncertainty of the traditional WQI have negative impacts on evaluation outcomes, particularly in determining indicator weights and selecting aggregation functions. The proposed

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18

Kookana, Rai S., Raymond L. Correll, and Rosalind B. Miller. "Pesticide Impact Rating Index – A Pesticide Risk Indicator for Water Quality." Water, Air, & Soil Pollution: Focus 5, no. 3-6 (2005): 277–78. http://dx.doi.org/10.1007/s11267-005-4108-3.

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Kookana, Rai S., Raymond L. Correll, and Rosalind B. Miller. "Pesticide Impact Rating Index – A Pesticide Risk Indicator for Water Quality." Water, Air, & Soil Pollution: Focus 5, no. 1-2 (2005): 45–65. http://dx.doi.org/10.1007/s11267-005-7397-7.

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Yalaletdinova, A. V., M. A. Malkova, Y. S. Vozhdaeva, and E. A. Kantor. "Probabilistic assessment of water quality by total hardness." IOP Conference Series: Earth and Environmental Science 1154, no. 1 (2023): 012034. http://dx.doi.org/10.1088/1755-1315/1154/1/012034.

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Abstract Monitoring of the total water hardness in the river was carried out by means of mathematical modeling and statistical processing. The distribution laws of the total hardness are found separately for each month, which more accurately reflects the impact on the seasonality index. It is determined that the obtained empirical distribution functions of the indicator do not correspond to normal and log-normal distributions, but are quite accurately described by polynomials, which is confirmed by Kolmogorov’s goodness-of-fit criterion. The resulting distribution functions of the total hardne

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Česonienė, Laima, Daiva Šileikienė, and Midona Dapkienė. "Relationship between the Water Quality Elements of Water Bodies and the Hydrometric Parameters: Case Study in Lithuania." Water 12, no. 2 (2020): 500. http://dx.doi.org/10.3390/w12020500.

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The larger and deeper lakes and ponds are, the better the conditions for spontaneous water purification, slower hydrobiological processes and slower accumulation of sediment. The goal of this research was to assess the ecological status of selected Lithuanian lentic water bodies and the impact of morphometric indicators on water quality. Multiple studies were conducted on 29 lakes and 10 ponds located throughout Lithuania in 2014–2018. The study proved that higher maxima and average depths of lakes correlate with lower Ptotal, Ntotal yield and macrophyte taxonomic composition values, indicatin

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Barinova, Sophia, and Vasiliy Dyadichko. "Zoological Water Quality Indicators for Assessment of Organic Pollution and Trophic Status of Continental Water Bodies." Transylvanian Review of Systematical and Ecological Research 24, no. 3 (2022): 65–106. http://dx.doi.org/10.2478/trser-2022-0021.

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Abstract This paper presents data compilation for invertebrates and protists indicator taxa of organic pollution and trophic state of continental waters. Information was collected from research papers, monographs, electronic resources, and our own research. Altogether 1732 indicator taxa of Kingdoms Protista, Protozoa, Chromista, and Animalia from 19 taxonomical Phyla are represented with ecological preferences for saprobity with saprobity index (S) and trophic state. This comprehensive data can be used for the purpose of aquatic ecosystem assessment and monitoring of water quality based on bi

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Nguyen, Thanh Giao, and Nhien Thi Hong Huynh. "Evaluating Surface Water Quality Using Indexes of Water Quality and Plankton Diversity." Civil Engineering Journal 9, no. 5 (2023): 1187–202. http://dx.doi.org/10.28991/cej-2023-09-05-011.

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The study aimed to assess the relationship between surface water quality and the diversity of planktonic communities in An Giang province, Vietnam. The national technical regulations on surface water quality, the water quality index (WQI), and the Shannon-Wiener diversity index (H') were applied to evaluate water quality. The considerable influence of water quality parameters on the dominant plankton was determined by canonical correspondence analysis (CCA) and similarity percentage analysis (SIMPER). The results showed that water quality was contaminated by organic matter, total suspended sol

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Zheng, Hongmei, Shiwei Hou, Jing Liu, Yanna Xiong, and Yuxin Wang. "Advanced Machine Learning and Water Quality Index (WQI) Assessment: Evaluating Groundwater Quality at the Yopurga Landfill." Water 16, no. 12 (2024): 1666. http://dx.doi.org/10.3390/w16121666.

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As industrial development and population growth continue, water pollution has become increasingly severe, particularly in rapidly industrializing regions like the area surrounding the Yopurga landfill. Ensuring water resource safety and environmental protection necessitates effective water quality monitoring and assessment. This paper explores the application of advanced machine learning technologies and the Water Quality Index (WQI) model as a comprehensive method for accurately assessing groundwater quality near the Yopurga landfill. The methodology involves selecting water quality indicator

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Díaz-Casallas, Daissy Milena, Mario Fernando Castro-Fernández, Elvira Bocos, Carlos Enrique Montenegro-Marin, and Rubén González Crespo. "2008–2017 Bogota River Water Quality Assessment based on the Water Quality Index." Sustainability 11, no. 6 (2019): 1668. http://dx.doi.org/10.3390/su11061668.

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This article provides a deep analysis of the water quality at the upper basin of the Bogota River (Colombia) between 2008 and 2017. The Water Quality Index has been the indicator employed to determine the ecological status of the river. This index was chosen in order to normalize the analysis, given that it is commonly used by the Institute of Hydrology, Meteorology and Environmental Studies, a government agency of the Ministry of Environment and Sustainable Development of Colombia, to determine the state of surface effluents. The results obtained were organized in a double-entry matrix in ord

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Manalu, Govinda Hendra, Yusni Ikhwan Siregar, and Afrizal Tanjung. "Macrozoobenthos Community Structure as an Indicator of Water Quality in the Intertidal Zone of Pariaman City, West Sumatra Province." Journal of Coastal and Ocean Sciences 5, no. 2 (2024): 114–24. http://dx.doi.org/10.31258/jocos.5.2.114-124.

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Community structure refers to the arrangement and composition of species in a natural community and their abundance. Ecologists use various indices to assess community structure, including diversity index, evenness index, and dominance index. One helpful indicator for evaluating water quality is the presence and characteristics of macrozoobenthos, organisms living in the sediment of aquatic environments. The study focused on the community structure of macrozoobenthos as an indicator of water quality in the coastal waters of Pariaman City, West Sumatra. Conducted between February and March 2023

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Márquez, Carmen O., Victor J. García, and Anita C. Ríos. "Water Quality Indicator for Adaptability to Global Climate Change in Andean Highland Ecosystems." Water 15, no. 5 (2023): 857. http://dx.doi.org/10.3390/w15050857.

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In the face of ongoing anthropogenic climate change, river water quality assessment has become increasingly important for maintaining ecological balance and supporting local and downstream livelihoods. This research aims to create a new water quality index (WQI) to assess water quality in the Andean highlands (>2000 m.a.s.l.) for climate change adaptation and mitigation. We examined water physicochemical and bacteriological parameters and the benthic macroinvertebrate (BM) community in three micro-watersheds in Achupallas, Ecuador, to achieve our goal. We analyzed water quality at 41 sampli

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Saad, Moch, Fuquh Rahmat Shaleh, and Faisol Mas'ud. "BIOMONITORING OF MACROINVERTEBRATE DIVERSITY AS AN INDICATOR OF POLLUTION IN DEKET RIVERS LAMONGAN REGENCY." Saintek Perikanan : Indonesian Journal of Fisheries Science and Technology 21, no. 1 (2025): 32–37. https://doi.org/10.14710/ijfst.21.1.32-37.

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Macroinvertebrates are aquatic organisms that live at the bottom of the water, have relatively slow movements, and have a relatively long life span so that they can respond to river water conditions, changes in water quality, and the substrate in which they live significantly affecting their composition and abundance. This research aims to determine the diversity value, macroinvertebrate dominance, and the river water quality based on the Family Biotic Index (FBI) in the Deket River, located in the Lamongan Regency. The sampling method used a purposive sampling method, sampling was carried out

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Yan, Xiaohui, Tianqi Zhang, Wenying Du, Qingjia Meng, Xinghan Xu, and Xiang Zhao. "A Comprehensive Review of Machine Learning for Water Quality Prediction over the Past Five Years." Journal of Marine Science and Engineering 12, no. 1 (2024): 159. http://dx.doi.org/10.3390/jmse12010159.

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Water quality prediction, a well-established field with broad implications across various sectors, is thoroughly examined in this comprehensive review. Through an exhaustive analysis of over 170 studies conducted in the last five years, we focus on the application of machine learning for predicting water quality. The review begins by presenting the latest methodologies for acquiring water quality data. Categorizing machine learning-based predictions for water quality into two primary segments—indicator prediction and water quality index prediction—further distinguishes between single-indicator

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Bharathi, H. R., S. Manjappa, T. Suresh, and B. Suresh. "Evaluation of Water Quality Index of Water Bodies Channarayapatna Taluk, Karnataka Region, India." International Journal of Applied Sciences and Biotechnology 4, no. 4 (2017): 475–82. http://dx.doi.org/10.3126/ijasbt.v4i4.16245.

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Present communication deals with a study of Physico-chemical parameters such as pH, Temperature, Total Suspended Solids, Turbidity, Dissolved Oxygen, Biochemical Oxygen Demand, Nitrate and Phosphate in water samples of Channarayapatna, Janivara, Anekere and Baghur water bodies in Channarayapatna taluka, Karnataka state of India. The water quality of the samples was compared with standard values given by World Health Organization (WHO) and United State Salinity Laboratory for drinking and irrigation purposes. Water Quality Index (WQI) was also calculated to know the overall quality of water sam

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Nair, Jitha P., and M. S. Vijaya. "River Water Quality Prediction and index classification using Machine Learning." Journal of Physics: Conference Series 2325, no. 1 (2022): 012011. http://dx.doi.org/10.1088/1742-6596/2325/1/012011.

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Abstract Various pollutants have had a substantial impact on the quality of water in recent years. The quality of water directly impacts human health and the environment. The water quality index (WQI) is an indicator of effective water management. Water quality modelling and prediction have become essential in the fight against water pollution. The research aims to build an efficient prediction model for river water quality and to categorize the index value according to the water quality standards. The data has been collected from eleven sampling stations located in various locations across th

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Shornikova, Elena Aleksandrovna. "A methodical approach to the ecological status evaluation of water bodies using the complex index of water quality on the example of the Middle Priobye." Samara Journal of Science 8, no. 2 (2019): 75–80. http://dx.doi.org/10.17816/snv201982114.

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The following paper deals with a methodical approach and experience of water quality complex index ( Iwq ) use for the evaluation of ecological status of surface water bodies by results of rivers monitoring within the Middle Ob basin during 2002-2018. This index allows to use such primary information as results of water chemistry analyses, parameters of structure of microbial community and other available data obtained for each sample site on various water bodies within the basin. The main evaluation criterion for calculating this index is a degree of a deviation of each controlled indicator f

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Zhai, Zhongping, Zihao Zhu, Yifan Xu, Xinhang Zhao, Fang Liu, and Zhihua Feng. "Cluster Migration Distance for Performance Degradation Assessment of Water Pump Bearings." Sensors 22, no. 18 (2022): 6809. http://dx.doi.org/10.3390/s22186809.

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Because the signal of water pump bearing is seriously disturbed by noise and the fault evolution is complex, it is difficult to describe the performance degradation trend of water pump bearing in a timely and accurate manner using the traditional performance degradation index (PDI). In this paper, a new Cluster Migration Distance (CMD) algorithm is proposed. The extraction of the indicator includes the following four steps: First, the relevant blind separation is used to extract the useful signal of the monitored bearing from the mixed signal; secondly, the impact component is further enhanced

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G, PRAMODA, Ayyappan Balasubrahmanian, Doddaia Nagaraju, and Vybhav Krishnamurthy. "Water Quality Index (WQI) to Evaluate Groundwater Quality in Chickmagaluru District, South Karnataka, India." Journal of The Indian Association of Sedimentologists 39, no. 1 (2022): 25–42. http://dx.doi.org/10.51710/jias.v39i1.203.

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Groundwater quality analysis is essentially prima facie in the present scenario. To evaluate groundwater quality 14 different physiochemical parameters were analyzed for groundwater samples in the study area. Water Quality Index (WQIs) is a composite indicator of water quality. The water quality index contains various parameters that can be quickly and easily communicated to its intended audience. WQI is one of the most effective techniques for determining the appropriateness of groundwater for drinking purposes. The extracted components indicate that geological, agricultural, rainfall, househ

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Addisie, Meseret B. "Evaluating Drinking Water Quality Using Water Quality Parameters and Esthetic Attributes." Air, Soil and Water Research 15 (January 2022): 117862212210750. http://dx.doi.org/10.1177/11786221221075005.

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This study assesses the quality of drinking water sources in the highlands of Ethiopia. The study considered a combination of users’ perceptions with the measured water quality parameters determined using the water quality index (WQI) tool. Data were collected using a cross-sectional research design for a household survey, and water quality samples were collected from improved and unimproved alternative sources. Nine physicochemical and two bacteriological analyses were performed. The result shows that esthetic water quality parameters had a potential interpretation of water quality as of the

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Chaliluddin, Makwiyah A., Shella Yusnita, Thaib Rizwan, Sayyid Afdhal El Rahimi, Ichsan Rusydi, and Roesa Nellyana. "Macrobenthos as an indicator of water quality assessment in Kutaraja Fishing Port, Indonesia." Depik 11, no. 1 (2022): 97–105. http://dx.doi.org/10.13170/depik.11.1.25365.

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Water quality is influenced by the high activity in the port area, resulting in decreasing water quality. The biological parameters based on the structure of the aquatic community of organisms that act as bioindicators could be indicated as changes in water quality around the port. Bioindicators are a group of living organisms susceptible to environmental changes due to human activities and natural damage. One of the aquatic organisms that can be used as an indicator of water quality is Benthos because of its sedentary nature. This study aims to determine the quality of the water environment s

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Rudaru, Daniel Gheorghe, Irina Eugenia Lucaciu, and Ana Maria Fulgheci. "Correlation between BOD5 and COD – biodegradability indicator of wastewater." Romanian Journal of Ecology & Environmental Chemistry 4, no. 2 (2022): 80–86. http://dx.doi.org/10.21698/rjeec.2022.207.

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Biochemical Oxygen Demand (BOD5) and Chemical Oxygen Demand (COD) are the most commonly parameters for characterization of organic matter content of water. Correlation between BOD5 and COD for different types of water can provide relevant information about the nature of pollution, the content of organic matter and its level of biodegradability. This correlation could also be used to assess the quality of effluent after the treatment processes, to improve the performance of wastewater treatment plants (WWTPs) and/or to monitor the quality of river water into which wastewater are discharged. The

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Kaur, Harpreet, Priya Katyal, and Sumita Chandel. "Assessment of water quality using different physicochemical and biological parameters: a case study of Buddha nallah, Punjab, India." Environment Conservation Journal 23, no. 3 (2022): 145–59. http://dx.doi.org/10.36953/ecj.10392241.

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For the assessment of physicochemical and microbiological quality of Buddha Nallah the water samples were drawn from 7 different sites and analysed during winter (December 2020) and summer (May 2021) for most probable number, heterotrophic plate count, total coliform, fecal coliform, indicator, emerging pathogens and physicochemical parameters. A strong correlation was found among the indicator organisms (r= 0.504-0.898), while relatively weak or no correlation was found between indicator and emerging pathogens. Moreover, the correlation between indicator and emerging pathogens was found to be

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Teslenko, V. A., T. M. Tiunova, and A. A. Semenchenko. "ESTIMATION OF WATER QUALITY ACCORDING TO THE EPT INDEX IN THE KAMCHATKA PENINSULA RIVERS IN AUTUMN, TAKING INTO ACCOUNT REGIONAL FEATURES OF THE FAUNA." Vladimir Ya. Levanidov’s Biennial Memorial Meetings 10 (June 21, 2023): 245–55. http://dx.doi.org/10.25221/levanidov.10.21.

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The paper presents the results of the water quality assessing in the surveyed areas of the foothill Kamchatka Peninsula Rivers in the autumn of 2023. The EPT index of indicator groups of mayfl ies (Ephemeroptera), stonefl ies (Plecoptera), and caddisfl ies (Trichoptera) in the streams of the Bolshaya, Kamchatka, and Avacha River Basins varied within 8–16, which corresponds to the standard of good-fair or fair water quality. However, given that the fauna of these indicator orders of aquatic insects in the Kamchatka Rivers is slightly more than 20 % of that in the south of the Far East; these re

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Al-Mohammed, Fadhil M., Riyadh Jasim Mohammd Al-Saadi, Ali M. Al-Fawzy, Saad H. Mohammed-Ali, Abdul-Khider A. Mutasher, and Ali H. Hommadi. "The Analysis of Water Quality Using Canadian Water Quality Index: Green Belt Project/Kerbala-Iraq." International Journal of Design & Nature and Ecodynamics 16, no. 1 (2021): 91–98. http://dx.doi.org/10.18280/ijdne.160112.

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During the last five decades, a huge amount of water pollutants has been recorded in all water resources around the world. Therefore, the water quality has become an important indicator affecting the vitality and productivity of plants, which requires an effective technique to monitor all these pollutants. The main objective of this study is to assess the validity of groundwater for wells located within the boundaries of the Green Belt area in Karbala city/Iraq for irrigation of palm and olive trees. Whereas, the use of saline groundwater as an alternative to available fresh water will promote

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Veljkovic, Nebojsa. "Sustainable development indicators: Case study for South Morava river basin." Chemical Industry 67, no. 2 (2013): 357–64. http://dx.doi.org/10.2298/hemind111226059v.

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The subject of research is elaboration and evaluation of indicators of sustainable development in the field of river basin management. Aggregate indicator entitled Ecoregion Sustainable Development Index is identified by calculation of average value by the procedure of leveling of proportion changes of three key indicators (demographic emission index, water quality index, industrial production index). Developed aggregate indicator of sustainable development is calculated and analyzed for South Morava river basin in Serbia, for the period from 1980 to 2010. The beneficiaries of these indicators

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Su, Kai, Qin Wang, Linxiao Li, Rong Cao, Yingwei Xi, and Guizhi Li. "Water quality assessment based on Nemerow pollution index method: A case study of Heilongtan reservoir in central Sichuan province, China." PLOS ONE 17, no. 8 (2022): e0273305. http://dx.doi.org/10.1371/journal.pone.0273305.

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In this paper, three monitoring sections were set up in Heilongtan Reservoir, and water samples were collected in 2019, 2020, and 2021 for the determination of physical and chemical properties such as permanganate index, chemical oxygen demand, and biochemical oxygen demand (BOD5). The water quality was evaluated by the single factor pollution index method and the Nemerow pollution index method, and the temporal and spatial changes of water quality were analyzed.The single factor pollution index method determines the water quality category by identifying the single worst indicator of water qua

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Cheng, Xiang, Shengrui Wang, Yue Dong, Zhaokui Ni, and Yan Hong. "Spatiotemporal Analysis and Risk Prediction of Water Quality Using Copula Bayesian Networks: A Case in Qilu Lake, China." Processes 12, no. 12 (2024): 2922. https://doi.org/10.3390/pr12122922.

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Lake water pollution under anthropogenic influences exhibits characteristics of high uncertainty, rapid evolution, and complex control challenges, presenting substantial threats to ecological systems and human health. Quantitative risk prediction provides crucial support for water quality deterioration prevention and management. This study employed the Copula Bayesian Network model to conduct a comprehensive risk assessment of water quality in Qilu Lake, China (2010–2020), incorporating inter-indicator correlations and multiple uncertainty sources. Analysis revealed generally “worse” water qua

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Simões, Fabiano dos Santos, Altair B. Moreira, Márcia Cristina Bisinoti, Sonia M. Nobre Gimenez, and Maria Josefa Santos Yabe. "Water quality index as a simple indicator of aquaculture effects on aquatic bodies." Ecological Indicators 8, no. 5 (2008): 476–84. http://dx.doi.org/10.1016/j.ecolind.2007.05.002.

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Khater, Ashraf, Mona Freda Secondes, Jude Xerxes Herbolario, et al. "Water Quality Index as Exposure Indicator for Addressing Climate Change Vulnerability of Selected Communities in Negros Occidental." Virtutis Incunabula 8, no. 1 (2021): 79–93. https://doi.org/10.63173/vpy3td15.

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Access to and quality of water have been major concerns for communities that are at risk because of climate change impacts. The importance of having sufficient supply of good water quality is vital for the community. The study focused on assessing water quality and presenting the parameters via a Water Quality Index (WQI), which would look at the source and discharge among selected communities of the province of Negros Occidental and provide the community with an indication of what needs to be addressed for their community needs. The WQI for the communities noted a general outcome for “Accepta

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Kasmira, Febriyanti, Syafruddin Nasution, and Mubarak Mubarak. "COMMUNITY STRUCTURE OF MACROZOOBENTHOS AS AN INDICATOR QUALITY OF COASTAL WATERS IN TANAH MERAH VILLAGE." Asian Journal of Aquatic Sciences 6, no. 2 (2023): 229–37. http://dx.doi.org/10.31258/ajoas.6.2.229-237.

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This research was conducted in January 2022 in the coastal waters of Tanah Merah Village and at the Marine Biology Laboratory and Marine Chemistry Laboratory, Department of Marine Science, University of Riau. The purpose of the study was to analyze the structure of macrozoobenthos communities in the coastal waters of Tanah Merah Village which includes the type, abundance, diversity, uniformity, dominance index, and similarity of communities. As supporting data in this study, several environmental parameters were also measured which included water quality, sediment type, and sedimentary organic

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Fitriyyah, Ita, Mohamad Yosef Firdaus, Astuti Kusumorini, and Rahmat Taufiq Mustahiq Akbar. "Diversity of Fish Species as Bioindicators of Water Quality in The Cikapundung River, Bandung City." Jurnal Biologi Tropis 24, no. 3 (2024): 412–21. http://dx.doi.org/10.29303/jbt.v24i3.7009.

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Human activity along the river impacts the aquatic environment from biotic and abiotic factors. One indicator that can reflect the quality of the waters is fish diversity. Several studies have used fish diversity as a biological indicator to determine the quality of waters, such as lake and river waters. The purpose of this study was to determine the diversity of fish and also to determine the quality of water in the Cikapundung River, Bandung City. The method used in this study was a survey and exploration method, which involved collecting samples at five stations using umbrella traps, cast n

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Cahyonugroho, O. H., S. Hariyanto, and G. Supriyanto. "Study of phytoplankton biology index and water quality parameters of kali Surabaya River." IOP Conference Series: Earth and Environmental Science 1041, no. 1 (2022): 012087. http://dx.doi.org/10.1088/1755-1315/1041/1/012087.

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Abstract Phytoplankton is used as an indicator of water quality because of its short life cycle and fast response to changes in the aquatic environment, especially in river ecosystems. In addition, the existence of industrial, agricultural, and community activities around the river will cause changes in the water quality of the waters. This study aim was to analyze the distribution of the phytoplankton community based on the biological index related to the water quality parameters of the Kali Surabaya river. The study was carried out in January – February 2021. The study sample used a random s

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Vink, Karina, Md Nasif Ahsan, Hisaya Sawano, and Miho Ohara. "Global Water-Related Risk Indicators: Meta-Analysis of Indicator Requirements." Journal of Disaster Research 12, no. 2 (2017): 355–67. http://dx.doi.org/10.20965/jdr.2017.p0355.

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Despite a long developmental history of water-related disaster risk indicators, there is still no consensus or reliable system for selecting objective data, no methodological system for choosing and verifying the relevancy of water-related disaster risk indicators, and no linking results back to root causes or addressing possible impacts on policies or actors to instigate change.Global policy documents such as the Sendai Framework for Disaster Risk Reduction (DRR) 2015–2013 [1] emphasize the urgent need for indicators capable of measuring risk reduction. However, developing and determining ris

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Mary, Anitha, Irutayasami Johnson, Kamalraj Subramaniam, Mahamuni Karthikeyan, and Roshan Roshan. "Prediction and classification of groundwater quality index (WQI) using regression learning models." Russian journal of biomechanics. 27, no. 2 (2023): 40–50. http://dx.doi.org/10.15593/rjbiomech/2023.2.05.

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Groundwater has developed into a vital natural resource as a result of its significant use in home applications, particularly for drinking, as well as in the agricultural and in-dustrial sectors. The quality and quantity of groundwater have varied greatly across time and space. Water quality index (WQI) which depends on many parameters, remains a critical indicator of the quality of water, which leads to effective water management. The administrators will be benefitted if an automatic system for predicting water quality exists. The primary aim of this study is to design a model to predict the

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