Analyzing Temporal Variations in Radon Concentrations: Identifying Trends and Changes

Research Square (Research Square), Год журнала: 2024, Номер unknown

Опубликована: Март 5, 2024

Radon is a well-known precursor for geodynamic events such as earthquakes and volcanic tremors. concentration variations in soil gas have been monitored worldwide, extreme radon values identified anomalies associated with events. A time series contains many noise signals, primarily based on meteorological effects. Therefore, detecting from outside the mean plus few standard deviations or average distribution threshold may not always yield good results. Instead of analyzing specific anomalies, an alternative method can be used to analyze trend changes series. This study examines locally estimated scatterplot smoothing (LOESS) identify During two-year period measurements, two separate groups anomaly mechanisms were identified. In first group, increases before earthquake decreases after earthquake, while second group it shows opposite behavior.

Язык: Английский

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Optimal Maintenance Strategy for Natural Gas Pipeline Systems Under Uncertain Conditions

Опубликована: Янв. 1, 2024

Pipelines are the main mode of transportation for resources such as oil and natural gas, which always facing many security challenges during process. Once failure occurs, it will cause huge economic losses casualties. Therefore, is necessary to carry out risk assessment maintenance work on pipelines. Aiming at lack crisp data uncertainty in assessment, this paper proposes a novel reliability evaluation method pipeline systems. The weakest t-norm algorithm (Tω), fuzzy fault tree analysis (FFTA), Bayesian networks (BN) used calculate gas proposed overcomes problems accumulation subjectivity traditional trees. In addition, considering differences effectiveness different methods actual process, research conducted optimizing strategies under hybrid maintenance. optimization model fully considers specific requirements areas uses genetic solve results. can provide corresponding optimal solutions areas, better meet needs engineering.

Язык: Английский

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Identification of pre-seismic radon anomaly using artificial neural network near Indo-Burman subduction line

Journal of Radioanalytical and Nuclear Chemistry, Год журнала: 2024, Номер 333(11), С. 5519 - 5529

Опубликована: Май 13, 2024

Язык: Английский

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Radon Distribution in Groundwater and River Water

Environmental science and engineering, Год журнала: 2023, Номер unknown, С. 53 - 87

Опубликована: Янв. 1, 2023

Язык: Английский

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