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Inefficient transfer of diatoms through the subpolar Southern Ocean twilight zone.
Nat Geosci
November 2024
National Oceanography Centre, Southampton, UK.
The Southern Ocean, a region highly vulnerable to climate change, plays a vital role in regulating global nutrient cycles and atmospheric CO via the biological carbon pump. Diatoms, photosynthetically active plankton with dense opal skeletons, are key to this process as their exoskeletons are thought to enhance the transfer of particulate organic carbon to depth, positioning them as major vectors of carbon storage. Yet conflicting observations obscure the mechanistic link between diatoms, opal and particulate organic carbon fluxes, especially in the twilight zone where greatest flux losses occur.
View Article and Find Full Text PDFIn the Twilight of Evidence: Is Bypass Surgery Still on the Table for Cardiac Allograft Vasculopathy?
J Clin Med
December 2024
Department of Cardiology, University Hospital Zurich, 8091 Zurich, Switzerland.
Cardiac allograft vasculopathy (CAV) is a major prognosis-limiting factor in patients undergoing orthotopic heart transplantation (HT). Due to the diffuse involvement of the coronary tree, CAV lesions are often not amenable to percutaneous coronary intervention (PCI), leaving coronary artery bypass grafting (CABG) and retransplantation as primary revascularization options. : The latest guidelines from the International Society for Heart and Lung Transplantation (ISHLT) recognize CABG as a viable option but with a downgraded strength of recommendation.
View Article and Find Full Text PDFThe dawn and twilight of Old Irish scholarship.
Lang Hist
October 2024
Department of Early Irish, Maynooth University, Ireland.
Even though the publication of Johann Kaspar Zeuss's monumental (Zeuss 1853) marks the beginning of the modern, scientific study of the Old Irish language, short excerpts of the most important textual witnesses of Old Irish, the so-called Old Irish glosses, preserved in 8th-9th-century manuscripts on the European Continent, had appeared in print since the early 18th century. This article gives an overview of these early publications from the 18th and early 19th century by Johann Georg von Eckhart, Domenico Vallarsi, Lodovico Antonio Muratori, and Vittorio Amedeo Peyron, and assesses their role as early trailblazers in the study of Old Irish.
View Article and Find Full Text PDFCamera and telemetry data from Slovak roads in various light and weather conditions.
Sci Data
December 2024
Slovak University of Technology, Faculty of Informatics and Information Technologies, Bratislava, 842 16, Slovakia.
In this paper, we describe the dataset captured with our proprietary data capture solution mounted on top of a Land Rover Defender vehicle. The captured data are the real data of drives on various Slovak roads. The total dataset consist of almost 33 hours of driving with a automotive grade FPD Link camera with 30 fps and with additional sensors such as high-precision GNSS sensor and modem towards mobile data connectivity LTE and 5 G.
View Article and Find Full Text PDFRecent trends and biases in mesophotic ecosystem research.
Biol Lett
December 2024
California Academy of Sciences, San Francisco, CA, USA.
Article Synopsis
- Mesophotic ecosystems, found between 30-150 meters deep, cover a large part of the oceans but have been under-researched due to accessibility challenges.
- Recent advances in underwater technology and increased interest have led to significant exploration of these ecosystems, particularly tropical and temperate coral reefs.
- An updated database review identified four main research biases: uneven geographical studies, differences in depth focus, varied research fields, and a scarcity of long-term studies, indicating areas for improvement in future research.
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