Article
Multidisciplinary Sciences
Seung-Kyu Kim, Ji-Su Kim, So-Young Kim, Nan-Seon Song, Hyoung Sul La, Eun Jin Yang
Summary: In order to explain the unexpectedly low plastic loads at the ocean's surface, unidentified sinks for plastic waste must be located. This study examines the microplastic budget in the western Arctic Ocean and finds that Arctic sediments function as important sinks for missing microplastics. The study also suggests that the slower increase in plastic burial compared to plastic production indicates more pollution in the Arctic in the future.
Article
Geosciences, Multidisciplinary
Boyin Huang, Zhaomin Wang, Xungang Yin, Anthony Arguez, Garrett Graham, Chunying Liu, Tom Smith, Huai-Min Zhang
Summary: Studies have shown that marine heatwaves in the Arctic are comparable with other regions globally, and in recent decades, there has been a significant increase in their intensity, frequency, duration, and areal coverage. These changes are closely related to increasing surface air temperature and decreasing sea-ice concentration under the global warming environment.
GEOPHYSICAL RESEARCH LETTERS
(2021)
Article
Multidisciplinary Sciences
Amanda H. Lynch, Charles H. Norchi, Xueke Li
Summary: Sea ice in the Arctic has made maritime navigation difficult, but the reduction of ice cover due to climate change is expected to improve accessibility. Projections suggest that the retreat of sea ice from the eastern Arctic will require revisions to international maritime laws. Although the economic viability of open water routes in international waters is currently uncertain, it is predicted that these routes will become feasible by the midcentury, leading to a reduction in regulatory friction and a recalibration of legal frameworks.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2022)
Article
Geochemistry & Geophysics
Liang Su, Jian Ren, Marie-Alexandrine Sicre, Youcheng Bai, Bassem Jalali, Zhongqiao Li, Haiyan Jin, Anatolii S. Astakhov, Xuefa Shi, Jianfang Chen
Summary: HBIs in marine sediments are used to reconstruct polar sea ice, but biases induced by continental run-off may affect the reliability of semi-quantitative sea ice estimates based on biomarkers in Arctic Ocean margins.
GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS
(2022)
Article
Oceanography
Jong-Ku Gal, Sun-Yong Ha, Jisoo Park, Kyung-Hoon Shin, Dongseon Kim, Nan-Young Kim, Sung-Ho Kang, Eun Jin Yang
Summary: Satellite observations and modeling data show an increase in net primary production in the Arctic Ocean due to retreating sea ice and warming, with under-ice blooms becoming more important. The role of sea-ice algae in these blooms is still unknown due to limited observations.
JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
(2022)
Article
Environmental Sciences
Youcheng Bai, Marie-Alexandrine Sicre, Jian Ren, Bassem Jalali, Vincent Klein, Hongliang Li, Long Lin, Zhongqiang Ji, Liang Su, Qingmei Zhu, Haiyan Jin, Jianfang Chen
Summary: Paleo-climate proxy records have revealed the fluctuations of sea-ice extent in the Chukchi Sea since the late 19th century, with changes indicating transient retreats and returns to perennial ice cover. Recent decades have seen an acceleration of terrigenous inputs and increased surface ocean stratification, leading to a decline in sea-ice cover. The potential drivers of these observed changes include the Arctic oscillation, Pacific decadal oscillation, and Atlantic Multidecadal Oscillation.
ENVIRONMENTAL RESEARCH LETTERS
(2022)
Article
Environmental Sciences
Jennifer K. Adams, Bethany Y. Dean, Samantha N. Athey, Liisa M. Jantunen, Sarah Bernstein, Gary Stern, Miriam L. Diamond, Sarah A. Finkelstein
Summary: This study conducted the first Canadian Arctic-wide investigation of anthropogenic particles in marine sediments, revealing that microfibers and microplastics, with a significant portion being anthropogenic cellulose fibers, are the main components. Concentrations of these particles in Canadian Arctic sediments exceeded those in urban areas near point sources of plastic pollution.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Oceanography
D. G. Babb, R. J. Galley, S. Kirillov, J. C. Landy, S. E. L. Howell, J. C. Stroeve, W. Meier, J. K. Ehn, D. G. Barber
Summary: The loss of multiyear sea ice in the Arctic Ocean has occurred primarily through two stepwise reductions: in 1989 and in 2006-2008. The first reduction was due to high export of multiyear ice, while the second reduction was a result of both high export and melt, as well as limited replenishment of multiyear ice. Although currently stable, reduced retention of older multiyear ice has led to a younger and thinner multiyear ice pack, potentially setting the stage for another reduction.
JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
(2023)
Article
Environmental Sciences
Per Fauchald, Per Arneberg, Jens Boldingh Debernard, Sigrid Lind, Erik Olsen, Vera Helene Hausner
Summary: As the Arctic warms and sea ice diminishes, trawling activities are rapidly increasing in response, posing potential threats to marine ecosystems in the Arctic Ocean. Governments should take stronger responsibility to regulate fishing activities and protect vulnerable Arctic shelf ecosystems.
ENVIRONMENTAL RESEARCH LETTERS
(2021)
Article
Engineering, Marine
Tarkan Aslan Bilge, Nicolas Fournier, Davi Mignac, Laura Hume-Wright, Laurent Bertino, Timothy Williams, Steffen Tietsche
Summary: In response to declining sea ice cover, human activity in the Arctic is increasing, making accurate knowledge of sea ice conditions increasingly important. This paper evaluates the accuracy of several sea ice thickness forecasts and highlights the importance of data assimilation in short-term forecasting.
JOURNAL OF MARINE SCIENCE AND ENGINEERING
(2022)
Article
Geosciences, Multidisciplinary
Manuel Ruben, Jens Hefter, Florence Schubotz, Walter Geibert, Martin Butzin, Torben Gentz, Hendrik Grotheer, Matthias Forwick, Witold Szczucinski, Gesine Mollenhauer
Summary: Traditionally, rock-derived or petrogenic organic carbon has been considered non-bioavailable and not actively involved in the carbon cycle. However, recent studies suggest that this carbon may not be as inert as previously thought, especially in fjord systems with high influxes of petrogenic organic carbon, which could contribute to greenhouse gas emissions. The extent to which microorganisms utilize this organic carbon is not well understood, but it plays a significant role in the global carbon cycling. Radiocarbon analysis of intact polar lipid-fatty acids in marine sediments from Hornsund Fjord, Svalbard, revealed that bacterial communities in the area utilize 5 +/- 2% to 55 +/- 6% (average of 25 +/- 16%) of petrogenic organic carbon for biosynthesis after sediment redeposition. This suggests that the lack of recently synthesized organic carbon from primary production forces microorganisms to rely on petrogenic organic carbon as an alternative energy source, highlighting its importance in carbon cycling.
Article
Environmental Sciences
Claire L. Parkinson, Nicolo E. DiGirolamo
Summary: The satellite dataset spanning 42 years from 1979 to 2020 reveals recent losses in sea ice coverage in both the Arctic and Antarctic, with the Arctic experiencing record low sea ice extents while the Antarctic has seen record lows since 2015. The data also shows that globally, every calendar month has recorded a new monthly record low within the past 5 years, indicating a rapid decline in global sea ice coverage.
REMOTE SENSING OF ENVIRONMENT
(2021)
Article
Multidisciplinary Sciences
Johan C. Faust, Allyson Tessin, Ben J. Fisher, Mark Zindorf, Sonia Papadaki, Katharine R. Hendry, Katherine A. Doyle, Christian Marz
Summary: The burial of organic material in marine sediments is a dominant natural mechanism of long-term carbon sequestration globally, but critical aspects of this carbon sink remain unresolved. By analyzing the chemical composition of sediments and pore waters from four locations in the Barents Sea, it was found that the carbon-iron coupling persists below the uppermost, oxygenated sediment layer over thousands of years.
NATURE COMMUNICATIONS
(2021)
Article
Geography, Physical
Niccolo Maffezzoli, Bjorg Risebrobakken, Martin W. Miles, Paul Vallelonga, Sarah M. P. Berben, Federico Scoto, Ross Edwards, Helle Astrid Kjaer, Henrik Sadatzki, Alfonso Saiz-Lopez, Clara Turetta, Carlo Barbante, Bo Vinther, Andrea Spolaor
Summary: Sea ice is a key component of Earth's climate, and past reconstructions are essential for understanding its connections with other parts of the climate system. Recent research has shown that biomarkers from marine sediments and elements in ice cores can be used to infer past changes in Arctic sea ice. Analysis of sodium, bromine, and iodine in ice cores from coastal eastern Greenland can provide insights into sea ice variability in the northern North Atlantic over the past 11,000 years. The data suggests that sea ice extent was lowest and seasonal in nature during the early Holocene, followed by increasing sea ice signals from around 8-9 thousand years ago in line with long-term cooling trends.
QUATERNARY SCIENCE REVIEWS
(2021)
Article
Oceanography
A. S. Criscitiello, T. Geldsetzer, R. H. Rhodes, M. Arienzo, J. McConnell, N. Chellman, M. B. Osman, J. J. Yackel, S. Marshall
Summary: Sea ice plays a critical role in the Earth's climate system by influencing ocean heat uptake, reflecting solar radiation, and contributing to dense water formation. This study compared ice core proxy records with satellite observations, finding distinct marine aerosol sources for two core sites, reflecting different moisture source regions and transport pathways.
JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
(2021)
Article
Chemistry, Physical
Hendrik Boehnke, Katharina Roettger, Rebecca A. Ingle, Hugo J. B. Marroux, Mats Bohnsack, Nina K. Schwalb, Andrew J. Orr-Ewing, Friedrich Temps
JOURNAL OF PHYSICAL CHEMISTRY B
(2019)
Article
Chemistry, Physical
O. Cannelli, C. Bacellar, R. A. Ingle, R. Bohinc, D. Kinschel, B. Bauer, D. S. Ferreira, D. Grolimund, G. F. Mancini, M. Chergui
STRUCTURAL DYNAMICS-US
(2019)
Review
Chemistry, Inorganic & Nuclear
Lars Mewes, Rebecca A. Ingle, Sebastian Megow, Hendrik Boehnke, Etienne Baranoff, Friedrich Temps, Majed Chergui
INORGANIC CHEMISTRY
(2020)
Article
Chemistry, Multidisciplinary
Shashank Pathak, Lea M. Ibele, Rebecca Boll, Carlo Callegari, Alexander Demidovich, Benjamin Erk, Raimund Feifel, Ruaridh Forbes, Michele Di Fraia, Luca Giannessi, Christopher S. Hansen, David M. P. Holland, Rebecca A. Ingle, Robert Mason, Oksana Plekan, Kevin C. Prince, Arnaud Rouzee, Richard J. Squibb, Jan Tross, Michael N. R. Ashfold, Basile F. E. Curchod, Daniel Rolles
Article
Chemistry, Physical
Goedele Roos, Julianna Olah, Rebecca Ingle, Rika Kobayashi, Milica Feldt
COMPUTATIONAL AND THEORETICAL CHEMISTRY
(2020)
Article
Physics, Multidisciplinary
Lars Mewes, Mao Wang, Rebecca A. Ingle, Karl Borjesson, Majed Chergui
COMMUNICATIONS PHYSICS
(2020)
Article
Biology
David J. Yurkowski, Thomas A. Brown, Paul J. Blanchfield, Steven H. Ferguson
PROCEEDINGS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES
(2020)
Article
Chemistry, Physical
Lars Mewes, Rebecca A. Ingle, Andre Al Haddad, Majed Chergui
Summary: Two-dimensional Fourier transform spectroscopy is a promising technique for studying ultrafast molecular dynamics, providing a more complete picture of dynamics with broadband laser pulses. This experiment presented visible broadband 2D spectra of dye molecules, revealing vibrational coherences and information about structural motion, and allowing for acquisition of 2D spectra with high bandwidth and temporal resolution.
JOURNAL OF CHEMICAL PHYSICS
(2021)
Article
Optics
R. A. Ingle, A. Banerjee, C. Bacellar, T. R. Barillot, L. Longetti, M. Coreno, M. de Simone, F. Zuccaro, L. Poletto, P. Miotti, A. Roder, A. Stolow, M. S. Schuurman, M. Odelius, M. Chergui
Summary: This article reports on the C K-edge X-ray absorption spectra and resonant and non-resonant X-ray emission spectra of ethylene, allene, and butadiene in the gas phase. The results show clear differences between the spectra of different molecules, with more structured spectra observed for ethylene and allene compared to butadiene. The authors used density functional theory calculations to simulate the spectra and successfully identified the spectral features as transitions involving localized 1s orbitals. The implications of these findings for ultrafast X-ray studies of polyatomic molecules passing through conical intersections are discussed.
JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS
(2022)
Article
Chemistry, Physical
Max Attwood, Xiaotian Xu, Michael Newns, Zhu Meng, Rebecca A. Ingle, Hao Wu, Xi Chen, Weidong Xu, Wern Ng, Temitope T. Abiola, Vasilios G. Stavros, Mark Oxborrow
Summary: This study systematically modulated the structure of three nitrogen-substituted tetracene derivatives to enhance their photoexcited spin dynamics and evaluated their potential as novel maser gain media through optical, computational, and electronic paramagnetic resonance spectroscopy. Chemical modifications affected the rates of intersystem crossing, triplet spin polarization, triplet decay, and spin-lattice relaxation, leading to significant consequences on the conditions required to exceed the maser threshold.
CHEMISTRY OF MATERIALS
(2023)
Article
Chemistry, Physical
Camila Bacellar, Rebecca A. Ingle, Giulia F. Mancini, Dominik Kinschel, Oliviero Cannelli, Yang Zhao, Claudio Cirelli, Gregor Knopp, Jakub Szlachetko, Frederico A. Lima, Samuel Menzi, Dmitry Ozerov, Georgios Pamfilidis, Katharina Kubicek, Dmitry Khakhulin, Wojciech Gawelda, Angel Rodriguez-Fernandez, Mykola Biednov, Christian Bressler, Christopher A. Arrell, Jeremy R. Rouxel, Philip J. M. Johnson, Christopher J. Milne, Majed Chergui
Summary: We report femtosecond X-ray absorption and emission spectra of ferric cytochrome C upon excitation of the haem or mixed excitation of the haem and tryptophan. The results suggest an ultrafast energy transfer between tryptophan and the haem, which is consistent with previous studies. The observed decay times of tryptophan fluorescence in ferrous and ferric cytochrome C are among the shortest reported and call for further theoretical investigation.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2023)
Article
Chemistry, Physical
Camila Bacellar, Jeremy R. Rouxel, Rebecca A. Ingle, Giulia F. Mancini, Dominik Kinschel, Oliviero Cannelli, Yang Zhao, Claudio Cirelli, Gregor Knopp, Jakub Szlachetko, Frederico A. Lima, Samuel Menzi, Dmitry Ozerov, Georgios Pamfilidis, Katharina Kubicek, Dmitry Khakhulin, Wojciech Gawelda, Angel Rodriguez-Fernandez, Mykola Biednov, Christian Bressler, Christopher A. Arrell, Philip J. M. Johnson, Christopher J. Milne, Majed Chergui
Summary: We present femtosecond Fe K-edge absorption (XAS) and nonresonant X-ray emission (XES) spectra, which indicate ultrafast energy transfer between the haem and tryptophan in ferric cytochrome C (Cyt c), without electron transfer processes. The decay times of tryptophan fluorescence in ferrous and ferric Cyt c are among the shortest reported for Trp in a protein, calling for further theoretical investigation.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2023)
Article
Multidisciplinary Sciences
Camila Bacellar, Dominik Kinschel, Giulia F. Mancini, Rebecca A. Ingle, Jeremy Rouxel, Oliviero Cannelli, Claudio Cirelli, Gregor Knopp, Jakub Szlachetko, Frederico A. Lima, Samuel Menzi, Georgios Pamfilidis, Katharina Kubicek, Dmitry Khakhulin, Wojciech Gawelda, Angel Rodriguez-Fernandez, Mykola Biednov, Christian Bressler, Christopher A. Arrell, Philip J. M. Johnson, Christopher J. Milne, Majed Chergui
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2020)
Article
Chemistry, Multidisciplinary
Yao Chang, Jiayue Yang, Zhichao Chen, Zhiguo Zhang, Yong Yu, Qingming Li, Zhigang He, Weiqing Zhang, Guorong Wu, Rebecca A. Ingle, Matthew Bain, Michael N. R. Ashfold, Kaijun Yuan, Xueming Yang, Christopher S. Hansen
Article
Chemistry, Physical
Michael N. R. Ashfold, Rebecca A. Ingle, Tolga N. Karsili, Jingsong Zhang
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2019)
Article
Chemistry, Analytical
Gang Qu, Yuxin Zhao, Qiaoli Zhang, Jina Wu, Xiaosen Li, Yang Yang, Shilei Liu
Summary: In this study, magnetic mesoporous materials combined with real-time in situ mass spectrometry were used for the high-throughput detection of hydrolyzed products of organophosphorus nerve agents. The method showed good linearity, low limits of detection and quantification, and high extraction recoveries. The magnetic preparation method used was quick, cost-effective, rugged, and safe. The results demonstrated the potential of this method for rapid and efficient determination of the target analytes in environmental samples.
ANALYTICAL METHODS
(2024)
Article
Chemistry, Analytical
Anna Hildebrand, Mariam Merchant, Danny O'Hare
Summary: Substandard and falsified artemisinin derivatives in antimalarials have caused significant deaths and economic losses. This study evaluates the feasibility of voltammetric methods for identifying and quantifying artemether. The findings suggest that electrochemical analysis shows promise as a method for artemether identification and quantification.
ANALYTICAL METHODS
(2024)
Article
Chemistry, Analytical
Marx Osorio Araujo Pereira, Alvaro Ferreira Junior, Edson Silvio Batista Rodrigues, Helena Mulser, Giovanna Nascimento de Mello e Silva, Wallans Torres Pio dos Santos, Eric de Souza Gil
Summary: Brazilian spotted fever (BSF) is a serious and rapidly evolving disease. A new impedimetric immunosensor was developed for rapid diagnosis by measuring specific antibodies in plasma. The sensor demonstrated selectivity and accuracy, and has potential for important applications in diagnostic testing.
ANALYTICAL METHODS
(2024)
Article
Chemistry, Analytical
Kathrin Schilling, Ronald A. Glabonjat, Olgica Balac, Marta Galvez-Fernandez, Arce Domingo-Relloso, Vesna Slavkovich, Jeff Goldsmith, Miranda R. Jones, Tiffany R. Sanchez, Ana Navas-Acien
Summary: Analysis of trace elements in urine is an important tool for assessing exposures, diagnosing nutritional status, and guiding public health and healthcare intervention. This study provides a sensitive method for analyzing 18 elements in urine samples, using only 100 μL. The results show good accuracy and sensitivity of the method.
ANALYTICAL METHODS
(2024)
Article
Chemistry, Analytical
Mengya Li, Shijie Liu, Shiliang Guo, Dong Liang, Miaoyun Li, Yaodi Zhu, Lijun Zhao, Jong-Hoon Lee, Gaiming Zhao, Yangyang Ma, Yanxia Liu
Summary: In this study, a magnetic flow device was developed to purify spores in a culture medium system. The device used magnetic nanoparticles to absorb vegetative cells, separating them from the spores. The achieved purity of the collected spores was over 95%. The study also demonstrated a rapid quantitative detection method using Raman spectroscopy.
ANALYTICAL METHODS
(2024)
Article
Chemistry, Analytical
Wanqiong Liu, Zixuan Wu, Jianwei Peng, Zebin Xu, Yong Liang
Summary: Metal-organic frameworks (MOFs) are effective carriers for molecular imprinting, but their poor dispersibility in aqueous solution is a significant drawback. In this study, we have applied amphiphilic block copolymers and molecularly imprinted technology on MOFs to improve the hydrophilicity of molecularly imprinted fluorescent materials.
ANALYTICAL METHODS
(2024)