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Journal articles on the topic 'Oxygen-17 anomaly'

Author: Grafiati

Published: 8 March 2025

Last updated: 31 July 2025

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1

Wang, Fan, Wensheng Ge, Hao Luo, Ji-Hye Seo, and Greg Michalski. "Oxygen-17 anomaly in soil nitrate: A new precipitation proxy for desert landscapes." Earth and Planetary Science Letters 438 (March 2016): 103–11. http://dx.doi.org/10.1016/j.epsl.2016.01.002.

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2

Zhang, Wenqi, and Yanlin Zhang. "Oxygen isotope anomaly (Δ<sup>17</sup>O) in atmospheric nitrate: A review." Chinese Science Bulletin 64, no. 7 (2019): 649–62. http://dx.doi.org/10.1360/n972018-01028.

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3

Morin, S., R. Sander та J. Savarino. "Simulation of the diurnal variations of the oxygen isotope anomaly (Δ<sup>17</sup>O) of reactive atmospheric species". Atmospheric Chemistry and Physics Discussions 10, № 12 (2010): 30405–51. http://dx.doi.org/10.5194/acpd-10-30405-2010.

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Abstract. The isotope anomaly (Δ17O) of secondary atmospheric species such as nitrate (NO3−) or hydrogen peroxyde (H2O2) has potential to provide useful constrains on their formation pathways. Indeed, the Δ17O of their precursors (NOx, HOx etc.) differs and depends on their interactions with ozone, which is the main source of non-zero Δ17O in the atmosphere. Interpreting variations of Δ17O in secondary species requires an in-depth understanding of the Δ17O of their precursors taking into account non-linear chemical regimes operating under various environmental settings. We present results from

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4

Schütte, Florian, Johannes Karstensen, Gerd Krahmann, et al. "Characterization of “dead-zone” eddies in the eastern tropical North Atlantic." Biogeosciences 13, no. 20 (2016): 5865–81. http://dx.doi.org/10.5194/bg-13-5865-2016.

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Abstract. Localized open-ocean low-oxygen “dead zones” in the eastern tropical North Atlantic are recently discovered ocean features that can develop in dynamically isolated water masses within cyclonic eddies (CE) and anticyclonic mode-water eddies (ACME). Analysis of a comprehensive oxygen dataset obtained from gliders, moorings, research vessels and Argo floats reveals that “dead-zone” eddies are found in surprisingly high numbers and in a large area from about 4 to 22° N, from the shelf at the eastern boundary to 38° W. In total, 173 profiles with oxygen concentrations below the minimum ba

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Morin, S., R. Sander та J. Savarino. "Simulation of the diurnal variations of the oxygen isotope anomaly (Δ<sup>17</sup>O) of reactive atmospheric species". Atmospheric Chemistry and Physics 11, № 8 (2011): 3653–71. http://dx.doi.org/10.5194/acp-11-3653-2011.

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Abstract. The isotope anomaly (Δ17O) of secondary atmospheric species such as nitrate (NO3−) or hydrogen peroxide (H2O2) has potential to provide useful constrains on their formation pathways. Indeed, the Δ17O of their precursors (NOx, HOx etc.) differs and depends on their interactions with ozone, which is the main source of non-zero Δ17O in the atmosphere. Interpreting variations of Δ17O in secondary species requires an in-depth understanding of the Δ17O of their precursors taking into account non-linear chemical regimes operating under various environmental settings. This article reviews an

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6

Digtiar, V. A., D. G. Vernihora, Yu V. Zavorotnya, A. P. Gladkiy, and M. O. Kaminska. "Application of Near-infrared reflectance spectroscopy in the diagnosis of varicocele in children and adolescents." Medicni perspektivi 29, no. 1 (2024): 101–8. http://dx.doi.org/10.26641/2307-0404.2024.1.300597.

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Varicocele is a venous anomaly characterized by the enlargement of the plexus of veins in the testicle. In pediatric cases, indications for surgical intervention in varicocele include palpable dilatation of the enlargement of the plexus veins, intermittent pain in the ipsilateral testicle, and a 20% reduction in size of the ipsilateral testicle compared to the contralateral healthy one. The limitations of evaluating these criteria and the need to assess semen parameters prompt clinicians to explore new diagnostic methods for timely surgical interventions in adolescents. One such promising stud

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Digtiar, V.A., D.G. Vernihora, Yu.V. Zavorotnya, A.P. Gladkiy, and M.O. Kaminska. "Application of Near-infrared reflectance spectroscopy in the diagnosis of varicocele in children and adolescents." Medicni perspektivi 29, no. 1 (2024): 101–8. https://doi.org/10.26641/2307-0404.2024.1.300597.

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Varicocele is a venous anomaly characterized by the enlargement of the plexus of veins in the testicle. In pediatric cases, indications for surgical intervention in varicocele include palpable dilatation of the enlargement of the plexus veins, intermittent pain in the ipsilateral testicle, and a 20% reduction in size of the ipsilateral testicle compared to the contralateral healthy one. The limitations of evaluating these criteria and the need to assess semen parameters prompt clinicians to explore new diagnostic methods for timely surgical interventions in adolescents. One such promising stud

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8

Wang, Kun, Shohei Hattori, Mang Lin, et al. "Isotopic constraints on atmospheric sulfate formation pathways in the Mt. Everest region, southern Tibetan Plateau." Atmospheric Chemistry and Physics 21, no. 10 (2021): 8357–76. http://dx.doi.org/10.5194/acp-21-8357-2021.

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Abstract. As an important atmosphere constituent, sulfate aerosols exert profound impacts on climate, the ecological environment, and human health. The Tibetan Plateau (TP), identified as the “Third Pole”, contains the largest land ice masses outside the poles and has attracted widespread attention for its environment and climatic change. However, the mechanisms of sulfate formation in this specific region still remain poorly characterized. An oxygen-17 anomaly (Δ17O) has been used as a probe to constrain the relative importance of different pathways leading to sulfate formation. Here, we repo

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Maaziz, Nada, Mathilde Jaillard, Céline Garrec, et al. "Hereditary Erythrocytosis: Results from Europe's Largest Idiopathic Erythrocytosis Database." Blood 144, Supplement 1 (2024): 3842. https://doi.org/10.1182/blood-2024-207790.

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Introduction Increased hemoglobin (Hb) and hematocrit values are frequent reasons for out patient clinic in hematology. In the majority of cases, a simple work-up leads to the diagnosis of either Polycythaemia Vera or acquired polycythaemia secondary to chronic hypoxia, EPO secreting tumour, etc. Hereditary erythrocytosis (HE) is a group of rare diseases, most often linked to mutations in genes involved in erythropoiesis. We report here on the main causes of HE, based on Europe's largest database of idiopathic erythrocytoses. Materials and methods Between 2015 and 2024, after written informed

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10

Balting, Daniel F., Monica Ionita, Martin Wegmann, et al. "Large-scale climate signals of a European oxygen isotope network from tree rings." Climate of the Past 17, no. 3 (2021): 1005–23. http://dx.doi.org/10.5194/cp-17-1005-2021.

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Abstract. We investigate the climate signature of δ18O tree-ring records from sites distributed all over Europe covering the last 400 years. An empirical orthogonal function (EOF) analysis reveals two distinct modes of variability on the basis of the existing δ18O tree-ring records. The first mode is associated with anomaly patterns projecting onto the El Niño–Southern Oscillation (ENSO) and reflects a multi-seasonal climatic signal. The ENSO link is pronounced for the last 130 years, but it is found to be weak over the period from 1600 to 1850, suggesting that the relationship between ENSO an

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11

Walters, Wendell W., Masayuki Takeuchi, Nga L. Ng, and Meredith G. Hastings. "Incorporating Oxygen Isotopes of Oxidized Reactive Nitrogen in the Regional Atmospheric Chemistry Mechanism, version 2 (ICOIN-RACM2)." Geoscientific Model Development 17, no. 11 (2024): 4673–87. http://dx.doi.org/10.5194/gmd-17-4673-2024.

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Abstract. The oxygen isotope anomaly (Δ17O = δ17O − 0.52 × δ18O > 0) has proven to be a robust tool for probing photochemical cycling and atmospheric formation pathways of oxidized reactive nitrogen (NOy). Several studies have developed modeling techniques to implicitly model Δ17O of NOy molecules based on numerous assumptions that may not always be valid. Thus, these models may be oversimplified and limit our ability to compare model Δ17O values of NOy with observations. In this work, we introduce a novel method for explicitly tracking Δ17O transfer and propagation into NOy and odd oxygen

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12

Liblik, Taavi, Yijing Wu, Daidu Fan, and Dinghui Shang. "Wind-driven stratification patterns and dissolved oxygen depletion off the Changjiang (Yangtze) Estuary." Biogeosciences 17, no. 10 (2020): 2875–95. http://dx.doi.org/10.5194/bg-17-2875-2020.

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Abstract. Multiple factors have been accused of triggering coastal hypoxia off the Changjiang Estuary, and their interactions lead to high yearly variation in hypoxia development time window and distribution extent. Two oceanographic cruises, conducted in July 2015 and August–September 2017, were complemented by river discharge, circulation simulation, remotely sensed wind, salinity and sea level anomaly data to study the dissolved oxygen (DO) depletion off the Changjiang Estuary from synoptic to interannual timescales. Intensification of the Chinese Coastal Current and Changjiang Diluted Wate

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13

De La Fuente, Patricia, Josep L. Pelegrí, Antonio Canepa, Marc Gasser, Francisco Domínguez, and Cèlia Marrasé. "A Simple Nonlinear and End-Member-Free Approach for Obtaining Ocean Remineralization Patterns." Journal of Atmospheric and Oceanic Technology 34, no. 11 (2017): 2443–55. http://dx.doi.org/10.1175/jtech-d-17-0090.1.

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AbstractThe variability of a biogeochemical property in the ocean is the outcome of both nonconservative (such as respiration and photosynthesis) and conservative (mixing of water masses with distinct concentrations at origin) processes. One method to separate both contributions is based on a multiple regression of the biogeochemical property in terms of temperature θ and salinity S as conservative proxies of water masses. This regression delivers the variability related to the conservative fraction and hence allows for identifying the residual as the biogeochemical anomaly. Here, the standard

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14

Morin, S., J. Savarino, S. Bekki, S. Gong та J. W. Bottenheim. "Signature of Arctic surface ozone depletion events in the isotope anomaly (Δ<sup>17</sup>O) of atmospheric nitrate". Atmospheric Chemistry and Physics 7, № 5 (2007): 1451–69. http://dx.doi.org/10.5194/acp-7-1451-2007.

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Abstract. We report the first measurements of the oxygen isotope anomaly of atmospheric inorganic nitrate from the Arctic. Nitrate samples and complementary data were collected at Alert, Nunavut, Canada (82°30 ' N, 62°19 ' W) in spring 2004. Covering the polar sunrise period, characterized by the occurrence of severe boundary layer ozone depletion events (ODEs), our data show a significant correlation between the variations of atmospheric ozone (O3) mixing ratios and Δ17O of nitrate (Δ17O(NO−3)). This relationship can be expressed as: Δ17O(NO−3)/‰, =(0.15±0.03)×O3/(nmol mol–1)+(29.7±0.7), with

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15

Morin, S., J. Savarino, S. Bekki, S. Gong та J. W. Bottenheim. "Pronounced signature of arctic surface ozone depletion events after polar sunrise on Δ<sup>17</sup>O in atmospheric nitrate". Atmospheric Chemistry and Physics Discussions 6, № 4 (2006): 6255–97. http://dx.doi.org/10.5194/acpd-6-6255-2006.

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Abstract. We report in this paper the first measurements of the isotopic anomaly of oxygen in Arctic atmospheric inorganic nitrate. Data and samples were collected at Alert, Nunavut, Canada (82°30' N, 62°19' W) in spring 2004. Focusing on the polar sunrise period, characterized by the occurrence of severe boundary layer ozone depletion events (ODEs), our data show a significant correlation between the evolution of atmospheric ozone (O3) mixing ratios and Δ17O in nitrate Δ17O(NO−3)). This relationship can be expressed as: Δ17O(NO−3)/‰=0.15 O3/ (nmol mol−1) + 28.6, with R2=0.70 (n=12), for Δ17O(

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16

Bao, Huiming, Mark H. Thiemens, David B. Loope, and Xun-Lai Yuan. "Sulfate oxygen-17 anomaly in an Oligocene ash bed in mid-North America: Was it the dry fogs?" Geophysical Research Letters 30, no. 16 (2003). http://dx.doi.org/10.1029/2003gl016869.

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17

Bellamoli, Francesca, Marco Vian, Mattia Di Iorio, and Farid Melgani. "Domain adaptation through active learning strategies for anomaly classification in wastewater treatment plants." Water Science & Technology, November 27, 2024. http://dx.doi.org/10.2166/wst.2024.387.

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ABSTRACT The increasing use of intermittent aeration controllers in wastewater treatment plants (WWTPs) aims to reduce aeration costs via continuous ammonia and oxygen measurements but faces challenges in detecting sensor and process anomalies. Applying machine learning to this unbalanced, multivariate, multiclass classification challenge requires much data, difficult to obtain from a new plant. This study develops a machine learning algorithm to identify anomalies in intermittent aeration WWTPs, adaptable to new plants with limited data. Utilizing active learning, the method iteratively selec

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18

Lin, Yu-Chi, Yan Zhao, Yan-Lin Zhang, et al. "China’s SO ₂ emission reductions enhance atmospheric ozone–driven sulfate aerosol production in East Asia." Proceedings of the National Academy of Sciences 122, no. 24 (2025). https://doi.org/10.1073/pnas.2414064122.

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Reduction of China’s SO 2 emissions has been found to nonlinearly decrease the atmospheric sulfate (SO 4 2− ) aerosol concentrations in East Asia. Compared to Europe and North America, the lower effectiveness of SO 4 2− reduction in East Asia suggested much effects of “acidity-sensitive” feedback mechanisms in this high anthropogenic emission region, which have not been yet examined. In this work, we investigated these feedback mechanisms in East Asia through long-term measurements of the mass-independent oxygen-17 anomaly (Δ 17 O) in sulfate aerosols, machine learning and Community Multiscale

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19

Hock, J., N. Nagdyman, C. Meierhofer, P. Ewert, and A. Hager. "Are there correlations between lung volume and exercise capacity in children and adolescents with native Ebstein's anomaly?" European Journal of Preventive Cardiology 29, Supplement_1 (2022). http://dx.doi.org/10.1093/eurjpc/zwac056.202.

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Abstract Funding Acknowledgements Type of funding sources: None. Background Patients with Ebstein’s Anomaly (EA) represent a wide clinical range with patients needing surgery in infancy and others needing no surgery throughout life. Exercise capacity in EA is often impaired. However, lung function is rarely investigated. Purpose This study examines lung volumes in native EA and their correlation with exercise capacity. Methods This retrospective study investigated 35 children with native EA (14 ± 4 years, 17 female), who underwent a cardiopulmonary exercise test (CPET) including spirometry to

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20

Radke, R. M., M. Bietenbeck, C. Meier, S. Orwat, H. Baumgartner, and A. Yilmaz. "P608Exercise testing and multi-parametric CMR assessment in patients with Ebstein anomaly." European Heart Journal 40, Supplement_1 (2019). http://dx.doi.org/10.1093/eurheartj/ehz747.0217.

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Abstract Background Ebstein anomaly (EA) is a rare congenital heart disease characterized by an apically displaced tricuspid valve. It is associated with tricuspid valve regurgitation and right heart dilatation leading to significant morbidity. While echocardiography remains the mainstay of routine outpatient cardiac imaging, assessment of right ventricular (RV) anatomy and function is still challenging. Cardiovascular magnetic resonance imaging (CMR) has been shown to be of advantage in these patients being free from acoustic window limitations and offering superior volume quantification. In

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Walters, Wendell W., Havala O. T. Pye, Heejeong Kim та Meredith G. Hastings. "Modeling the Oxygen Isotope Anomaly (Δ¹⁷O) of Reactive Nitrogen in the Community Multiscale Air Quality Model: Insights into Nitrogen Oxide Chemistry in the Northeastern United States". ACS ES&T Air, 22 квітня 2024. http://dx.doi.org/10.1021/acsestair.3c00056.

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22

Ostenfeld, E., F. Simard, G. Smith, et al. "1162 Improved exercise tolerance and cardiac index at mid-term follow up after tricuspid valve surgery of Ebsteins anomaly." European Heart Journal - Cardiovascular Imaging 21, Supplement_1 (2020). http://dx.doi.org/10.1093/ehjci/jez319.666.

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Abstract Funding Acknowledgements Swedish Heart-Lung Foundation, Swedish Society of Medicine, Swedish Heart Association, Skåne University Hospital, Region Skåne, and Lund University Background Ebstein’s anomaly (EA) is due to failed delamination of the tricuspid valve (TV) causing TV regurgitation (TR) and right ventricular (RV) dilatation, reduced exercise capacity and survival. TV repair/replacement (TVR) aims to reduce morbidity and mortality by reducing regurgitation and RV dilatation. Exercise capacity measured by predicted peak oxygen uptake (VO2%) and ventilatory expiratory slope (VE/CO

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23

Kuwahara, Yuta, Yukihiro Takahashi, Yuya Komori, Naohiro Kabuto, and Naoki Wada. "Neonatal intra-atrial baffle repair for isolated ventricular inversion with left isomerism: a case report." Surgical Case Reports 6, no. 1 (2020). http://dx.doi.org/10.1186/s40792-020-01016-3.

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Abstract Background Discordant atrioventricular connection with concordant ventriculoarterial connection, otherwise known as isolated ventricular inversion (IVI), is an extremely rare congenital cardiac malformation. Reports on the corrective surgery for this anomaly in neonates are few, and the procedure is difficult and complicated. Herein, we report our use of atrial septostomy as a palliative procedure followed by corrective surgery for the repair of neonatal IVI with situs ambiguous(inversus) morphology. Case presentation A 2-day-old girl weighing 3.5 kg was admitted to our hospital with

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24

Zhang, Zhongyi, Zhuang Jiang, Tao Zhou та Lei Geng. "Reconciling Modeled and Observed Δ¹⁷O(NO₃⁻) in Beijing Winter Haze With Heterogeneous Chlorine Chemistry". Journal of Geophysical Research: Atmospheres 129, № 6 (2024). http://dx.doi.org/10.1029/2023jd039740.

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AbstractThe fine particulate matter (PM2.5) in Chinese megacities has declined significantly after the implementation of strict mitigation strategies since 2013. However, the concentration of wintertime nitrate in PM2.5 (p‐NO3‐) has only changed slightly and became the dominant inorganic component despite considerable precursor emission reductions. Discerning chemical mechanisms leading to nitrate growth during haze events is critical to implementing effective pollution mitigation policies. The oxygen isotope anomaly of nitrate (Δ17O(NO3−)) is a powerful means to distinguish nitrate formation

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