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Letteratura scientifica selezionata sul tema "Hydrochemical modeling"

Autore: Grafiati

Pubblicato: 4 giugno 2021

Ultima modifica: 25 luglio 2025

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Articoli di riviste sul tema "Hydrochemical modeling"

Guo, Liang, Yuanyuan Ding, Haisong Fang, Chunxue An, Wanjun Jiang, and Nuan Yang. "Integrating Inverse Modeling to Investigate Hydrochemical Evolution in Arid Endorheic Watersheds: A Case Study from the Qaidam Basin, Northwestern China." Water 17, no. 14 (2025): 2074. https://doi.org/10.3390/w17142074.

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The hydrochemical characteristics and evolution mechanisms of groundwater are critical for accurately understanding the input–output budget of hydrochemical constituents in pristine groundwater. However, few studies have analyzed the changes in mineral precipitation and dissolution equilibrium along the groundwater flow path, especially in arid regions. This study integrated hydrochemical analysis, stable isotopes, and inverse hydrochemical modeling to identify groundwater recharge sources, hydrochemical evolution, and controlling mechanisms in an arid endorheic watershed, northwestern China.

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Dzombak, David A., and M. Ashraf Ali. "Hydrochemical Modeling of Metal Fate and Transport in Freshwater Environments." Water Quality Research Journal 28, no. 1 (1993): 7–50. http://dx.doi.org/10.2166/wqrj.1993.003.

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Abstract During the last decade there has been growing interest in the development of hydrochemical models (coupled transport-chemistry-biology models) for better understanding and, eventually, for predicting the fate and transport of metals in freshwater environments. While there has been much discussion of such models and their submodels, and detailed examinations of the mechanistic descriptions and mathematics involved in their formulation, there has been relatively little attention focused on how well they perform in describing field data. This paper provides a look at the state-of-the art

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Liu, Yi, Mingqian Li, Ying Zhang, Xiaofang Wu, and Chaoyu Zhang. "Analysis of the Hydrogeochemical Characteristics and Origins of Groundwater in the Changbai Mountain Region via Inverse Hydrogeochemical Modeling and Unsupervised Machine Learning." Water 16, no. 13 (2024): 1853. http://dx.doi.org/10.3390/w16131853.

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This study employed hydrochemical data, traditional hydrogeochemical methods, inverse hydrogeochemical modeling, and unsupervised machine learning techniques to explore the hydrogeochemical traits and origins of groundwater in the Changbai Mountain region. (1) Findings reveal that predominant hydrochemical types include HCO3−Ca·Mg, HCO3−Ca·Na·Mg, HCO3−Mg·Na, and HCO3−Na·Mg. The average metasilicic acid content was found to be at 49.13 mg/L. (2) Rock weathering mechanisms, particularly silicate mineral weathering, primarily shape groundwater chemistry, followed by carbonate dissolution. (3) Wat

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Myagkov, Sergey. "THREE-DIMENSIONAL (3-D) SPATIAL-TEMPORAL ANALYSIS OF THE HYDROCHEMICAL MODE OF THE SYRDARIA RIVER." Journal of Science and Innovative Development 3, no. 2 (2020): 83–88. http://dx.doi.org/10.36522/2181-9637-2020-2-10.

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The analysis of the hydrochemical regime of the rivers feeding the irrigated territories of agricultural land in the river basin is essential to develop scientifically based recommendations on the rational use of water and land resources. Anthropogenic influence on water and land resources in the basins of the rivers inevitably affects the change of surface water quality. A new method is proposed for analyzing the hydrochemical regime of the rivers based on three-dimensional (3-D) modeling of the Spatio-temporal distribution of water mineralization along the length of the main river. This meth

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Tunakova, Yulia, Svetlana Novikova, Vsevolod Valiev, Evgenia Baibakova, and Ksenia Novikova. "The Use of Neural Network Modeling Methods to Determine Regional Threshold Values of Hydrochemical Indicators in the Environmental Monitoring System of Waterbodies." Sensors 23, no. 13 (2023): 6160. http://dx.doi.org/10.3390/s23136160.

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The regulation of the anthropogenic load on waterbodies is carried out based on water quality standards that are determined using the threshold values of hydrochemical indicators. These applied standards should be defined both geographically and differentially, taking into account the regional specifics of the formation of surface water compositions. However, there is currently no unified approach to defining these regional standards. It is, therefore. appropriate to develop regional water quality standards utilizing modern technologies for the mathematical purpose of methods analysis using bo

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Wei, Zhonglin, Yuan Ji, Huiming Fang, Lujia Yu, and Donglin Dong. "Rapid Source Identification of Mine Water Inrush Using Spectral Data Combined with BA-RBF Modeling." Water 17, no. 6 (2025): 790. https://doi.org/10.3390/w17060790.

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Coal mine safety is vital not only for maintaining production operations but also for ensuring the industry’s sustainable development. The threat posed by mine water hazards is especially severe, growing more critical as mining activities become more intense and reach greater depths. Currently, common methods for identifying water sources mainly depend on hydrochemical data, supplemented by analyses of water level and temperature changes. However, due to constraints in cost, time, and the complexity of mining conditions, there is still significant potential for enhancing water source identific

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Пичугина, Анна Игоревна, and Ирина Геннадьевна Критова. "MODELING OF HYDROCHEMICAL OXIDATION OF HEAZLEWOODITE WITH NITRIC ACID." Вестник Тверского государственного университета. Серия: Химия, no. 3(41) (November 10, 2020): 65–72. http://dx.doi.org/10.26456/vtchem2020.3.7.

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В работе представлены результаты математического моделирования окислительного растворения хизлевудита в растворах азотной кислоты в условиях равнодоступной поверхности вращающегося диска с применением метода полного факторного эксперимента. Получены и проанализированы зависимости скорости процесса гидрохимического окисления сульфида никеля (W, моль/смс) от продолжительности взаимодействия (τ, с), влияния концентрации азотной кислоты (С, моль/дм), частоты вращения диска (ω, с) и температуры (Т, К). Определены основные кинетические параметры: константа скорости и эффективная энергия активации пр

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Yang, Nuan, Guangcai Wang, Zheming Shi, et al. "Application of Multiple Approaches to Investigate the Hydrochemistry Evolution of Groundwater in an Arid Region: Nomhon, Northwestern China." Water 10, no. 11 (2018): 1667. http://dx.doi.org/10.3390/w10111667.

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Groundwater is a critical water resource for human survival and economic development in arid and semi-arid areas. It is crucial to understand the groundwater circulation and hydrochemical evolution for sustainable management and utilization of groundwater resources in those areas. To this end, an investigation of the hydrochemical characteristics of surface water and groundwater was conducted in Nomhon, an arid area located in the Qaidam Basin, northwest China, by using hydrochemical (major and trace elements) and stable isotopes (δD and δ18O) approaches. Stable isotopes and ion ratios were an

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Yu, Shengpin, Tianye Wang, Ximin Bai, et al. "Hydrochemical Characteristics and Formation Mechanisms of Groundwater in the Nanmiao Emergency Groundwater Source Area, Yichun, Western Jiangxi, China." Water 17, no. 14 (2025): 2063. https://doi.org/10.3390/w17142063.

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The Nanmiao Emergency Groundwater Source Area, rich in H2SiO3, serves as a strategic freshwater reserve zone in western Jiangxi Province. However, the mechanisms underlying groundwater formation in this area remain unclear. This study applied a combination of statistical analysis, isotopic tracing, and hydrochemical modeling to reveal the hydrochemical characteristics and origins of groundwater in the region. The results indicate that Na+ and Ca2+ dominate the cations, while HCO3− and Cl− dominate the anions. Groundwater from descending springs is characterized by low mineralization and weak a

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Yakhno, Oleg, Ihor Hnativ, and Roman Hnativ. "Influence of cavitation processes on river water purification of mountain streams." Mechanics and Advanced Technologies 6, no. 1 (2022): 62–69. http://dx.doi.org/10.20535/2521-1943.2022.6.1.254613.

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Problems: The article considers the study of the influence of cavitation phenomena in hydrodynamically active areas of mountain rivers on the processes of natural self-purification of water. The paper considers the experimental results of determining the change in seasonal indicators of the hydrochemical composition of surface waters in the Stryi river basin. Objective: to determine the impact of hydrodynamically active areas (HAA) of mountain rivers on the processes of natural self-purification and to develop methods of laboratory modeling of these areas to determine the hydrochemical p

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Più fonti

Tesi sul tema "Hydrochemical modeling"

Wolford, Ross A. "INTEGRATED HYDROCHEMICAL MODELING OF AN ALPINE WATERSHED: SIERRA NEVADA, CALIFORNIA." Department of Hydrology and Water Resources, University of Arizona (Tucson, AZ), 1992. http://hdl.handle.net/10150/617630.

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Seasonally snow covered alpine areas play a larger role in the hydrologic cycle than their area would indicate. Their ecosystems may be sensitive indicators of climatic and atmospheric change. Assessing the hydrologic and bio- geochemical responses of these areas to changes in inputs of water, chemicals and energy should be based on a detailed understanding of watershed processes. This dissertation discusses the development and testing of a model capable of predicting watershed hydrologic and hydrochemical responses to these changes. The model computes integrated water and chemical balan

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Asim, Muhammad. "HYDROCHEMICAL CHARACTERIZATION AND NUMERICAL MODELING OF GROUNDWATER FLOW IN A PART OF THE HIMALAYAN FORELAND BASIN." Kent State University / OhioLINK, 2005. http://rave.ohiolink.edu/etdc/view?acc_num=kent1132262925.

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Timms, Wendy Amanda Civil &amp Environmental Engineering Faculty of Engineering UNSW. "The importance of aquitard windows in the development of alluvial groundwater systems : Lower Murrumbidgee, Australia." Awarded by:University of New South Wales. School of Civil and Environmental Engineering, 2001. http://handle.unsw.edu.au/1959.4/18671.

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Variable groundwater quality in complex aquifer-aquitard systems presents a challenge for sustainable groundwater development. In the Lower Murrumbidgee alluvial fan of the Murray-Darling Basin in semi arid inland Australia, shallow groundwater is saline (12000 &micro S/cm) and locally contaminated by nitrate. Deep fresh aquifers (150 &micro S/cm), developed as an irrigation water supply, were thought to be protected from downwards leakage by laterally extensive aquitards. However, hydrochemical sampling, augmented by historic data, revealed that aquifer salinisation (400 to 4000 &micro S/cm)

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Ibikunle, Olatunde Idris. "Modelling Chlorine Transport in Temperate Soils." Thesis, Linköping University, Department of Water and Environmental Studies, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-9524.

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<p>Microbes have been suggested to have a strong impact on the transportation of chlorine in soils. There are speculations about environmental factors limiting microbial effect on chlorine movement and retention. For this study, a numerical hydrochemical model was built to describe microbial transformation of chlorine in a laboratory lysimeter experiment. Undisturbed soil cores used to set-up the experiment were collected from a coniferous forest soil in southeast Sweden. The lysimeters were modelled in groups depending on their different water and chloride treatments. Microbial transformation

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Mohamed, Basher Hoosein. "Integrated groundwater quantity and quality management for the middle region of Libya using hydrochemical and numerical modelling approaches." Thesis, Cardiff University, 2011. http://orca.cf.ac.uk/13739/.

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Libya is a country of desert and the arid climate makes it in extreme lack of surface water. Groundwater then becomes a very important resource to meet the economical and agricultural demand in the northern coastal areas. Groundwater has been over-exploited and some problems occurred such as saline deterioration and aquifer deterioration since 1960s. To better understand these problems for a proper management solution, this project was setup for groundwater investigations aiming better management strategy in Wadi Baye as a case study based upon the governmental water management requirement. Ba

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Sprenger, Christoph [Verfasser]. "Surface-groundwater interactions associated with river bank filtration in Delhi (India) : investigation and modelling of hydraulic and hydrochemical processes / Christoph Sprenger." Berlin : Freie Universität Berlin, 2011. http://d-nb.info/1026069564/34.

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ROTIROTI, MARCO. "Hydrogeology and hydrogeochemistry of As, Fe, Mn rich groundwater of the multi-layer aquifer in the lower Po Plain, Lombardy region (northern Italy)." Doctoral thesis, Università degli Studi di Milano-Bicocca, 2013. http://hdl.handle.net/10281/42004.

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The present study concerns the analysis of the hydrogeology and the hydrogeochemistry of the As, Fe, Mn rich groundwater of the alluvial multi-layer aquifer in the lower Po Plain (northern Italy), referring specifically to the territory of Cremona. The main aim is to understand the origins (natural or anthropic) and mechanisms of the high groundwater As, Fe and Mn concentrations. The specific study area is located near the confluence between Adda and Po rivers. It covers a 50 km2 wide area around the urban territory of Cremona. The considered aquifer depths are around 200-250 m. The app

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Naicker, Sivashni. "Conventional hydrogeological, hydrochemical and environmental isotope study of the Sandspruit River Catchment, Berg River Basin, South Africa." Thesis, 2012. http://hdl.handle.net/10413/9773.

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The Sandspruit River catchment, found within the heart of the Swartland region is infamous for wheat and wine production. Variable groundwater quality and low productivity is encountered within the folded and fractured Malmesbury Group aquifer, whilst the most productive and better quality groundwater is found within the Table Mountain Group sandstone. The Sandspruit catchment (a tributary of the Berg River) represents a drainage system, whereby saline groundwater with TDS up to 10870 mg/l, and EC up to 2140 mS/m has been documented. The catchment belongs to the winter rainfall region with pre

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Libri sul tema "Hydrochemical modeling"

Al-Bassam, Abdulaziz M. Hydrochemical computer modeling in groundwater related problems. University of Birmingham, 1987.

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Preston, Stephen D. Statistical identification of hydrochemical response units for hydrologic monitoring and modeling in Maryland. U.S. Dept. of the Interior, U.S. Geological Survey], 2000.

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Preston, Stephen D. Statistical identification of hydrochemical response units for hydrologic monitoring and modeling in Maryland. U.S. Dept. of the Interior, U.S. Geological Survey], 2001.

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Capitoli di libri sul tema "Hydrochemical modeling"

Ozsahin, Dilber Uzun, Declan Ikechukwu Emegano, Berna Uzun, and Ilker Ozsahin. "Predictive Modeling of Groundwater Contaminant Transport: Integrating Environmental Factors and Hydrochemical Parameters." In Environmental Earth Sciences. Springer Nature Switzerland, 2024. http://dx.doi.org/10.1007/978-3-031-65960-7_18.

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Sukhinov, Alexander I., Alexander E. Chistyakov, Alla V. Nikitina, Yulia V. Belova, Vladimir V. Sumbaev, and Alena A. Semenyakina. "Supercomputer Modeling of Hydrochemical Condition of Shallow Waters in Summer Taking into Account the Influence of the Environment." In Communications in Computer and Information Science. Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-99673-8_24.

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Whitehead, P. G., T. J. Musgrove, and B. J. Cosby. "Hydrochemical modelling of acidification in Wales." In Acid Waters in Wales. Springer Netherlands, 1990. http://dx.doi.org/10.1007/978-94-009-1894-8_17.

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Aparna, K., T. M. Vishnu Maya, Anju Lal, G. Rijulal, A. Krishnakumar, and K. Anoop Krishnan. "Holistic Approach in Assessing the Health of Kadinamkulam Kayal, Kerala in Terms of Hydrochemical Indices." In GIScience and Geo-environmental Modelling. Springer Nature Switzerland, 2024. http://dx.doi.org/10.1007/978-3-031-57777-2_9.

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Lal, Anju, T. M. Vishnu Maya, S. Chaithanya, et al. "Anthropogenic Impacts on the Hydrochemical and Geochemical Characteristics of the Vellayani Tropical Freshwater Lake of Kerala, India." In GIScience and Geo-environmental Modelling. Springer Nature Switzerland, 2024. http://dx.doi.org/10.1007/978-3-031-57777-2_16.

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Samper, F. J., and S. P. Neuman. "Estimation of Spatial Covariance Structures with Application to Hydrological, Hydrochemical and Isotopic Data from Aquifers: State-of-the-Art and Adjoint State Maximum Likelihood Cross-Validation Methods." In Groundwater Flow and Quality Modelling. Springer Netherlands, 1988. http://dx.doi.org/10.1007/978-94-009-2889-3_32.

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Baklagin, V. N. "Development of the Structure of a Unified Hydrobiological and Hydrochemical Database for the Information and Analytical System “Lake Onego and Its Cathment”." In Proceedings of the 9th International Conference on Physical and Mathematical Modelling of Earth and Environmental Processes. Springer Nature Switzerland, 2024. http://dx.doi.org/10.1007/978-3-031-54589-4_1.

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"Hydrochemical models." In Developments in Environmental Modelling. Elsevier, 1985. http://dx.doi.org/10.1016/b978-0-444-99567-4.50009-4.

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Atti di convegni sul tema "Hydrochemical modeling"

Shu-wei Qiu, Xiu-juan Liang, Chao Du, Ji-juan Yin, and Chang-qing Jia. "Hydrochemical zonality and geochemical modeling of lower Liaohe plain." In 2011 International Symposium on Water Resource and Environmental Protection (ISWREP). IEEE, 2011. http://dx.doi.org/10.1109/iswrep.2011.5893677.

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Pi, Kunfu, Juewen Liu, and Philippe Van Cappellen. "Speciation of ultra-trace mercury(II) in natural waters: Insights from a DNA-based biosensor and hydrochemical modeling." In Goldschmidt2021. European Association of Geochemistry, 2021. http://dx.doi.org/10.7185/gold2021.6525.

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Rapporti di organizzazioni sul tema "Hydrochemical modeling"

Dudley, Lynn M., Uri Shani, and Moshe Shenker. Modeling Plant Response to Deficit Irrigation with Saline Water: Separating the Effects of Water and Salt Stress in the Root Uptake Function. United States Department of Agriculture, 2003. http://dx.doi.org/10.32747/2003.7586468.bard.

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Standard salinity management theory, derived from blending thermodynamic and semi- empirical considerations leads to an erroneous perception regarding compensative interaction among salinity stress factors. The current approach treats matric and osmotic components of soil water potential separately and then combines their effects to compute overall response. With deficit water a severe yield decrease is expected under high salinity, yet little or no reduction is predicted for excess irrigation, irrespective of salinity level. Similarly, considerations of competition between chloride and nitrat

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Carter, T. R., C. E. Logan, J K Clark, H. A. J. Russell, E. H. Priebe, and S. Sun. A three-dimensional bedrock hydrostratigraphic model of southern Ontario. Natural Resources Canada/CMSS/Information Management, 2022. http://dx.doi.org/10.4095/331098.

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A hydrostratigraphic framework has been developed for southern Ontario consisting of 15 hydrostratigraphic units and 3 regional hydrochemical regimes. Using this framework, the 54 layer 3-D lithostratigraphic model has been converted into a 15 layer 3-D hydrostratigraphic model. Layers are expressed as either aquifer or aquitard based principally on hydrogeologic characteristics, in particular the permeability and the occurrence/absence of groundwater when intersected by a water well or petroleum well. Hydrostratigraphic aquifer units are sub-divided into up to three distinct hydrochemical reg

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Richardson, M. High-resolution landscape characterization for modelling terrestrial-aquatic hydrochemical interactions in Precambrian Shield lake districts: Recommendations for the Lac Dasserat science program. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 2016. http://dx.doi.org/10.4095/297769.

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Statistical identification of hydrochemical response units for hydrologic monitoring and modeling in Maryland. US Geological Survey, 2000. http://dx.doi.org/10.3133/wri004232.

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