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A new Early Triassic marine fauna is described from the Central Oman Mountains. The fauna is Griesbachian in age, on the basis of abundant conodonts and ammonoids, and was deposited in an oxygenated seamount setting off the Arabian platform margin. It is the first Griesbachian assemblage from a well-oxygenated marine setting and thus provides a test for the hypothesis that widespread anoxia preven
This thesis explores index theory for linear differential operators using tools from noncommutative geometry. We study how spectral triples can accommodate elliptic and Heisenberg-elliptic higher-order differential operators in K-homology, with a specific focus on manifolds with boundary. In the case of higher-order elliptic differential operators on manifolds with smooth compact boundary, we prov
Robot failures in Human-Robot Interaction (HRI), though often stemming from technical limitations, can have severe effects on the interactional dynamics between humans and robots. Prior empirical research has led to conflicting findings on how such failures influence user perceptions and the overall success of the interaction. In this study, we investigate how human participants respond to robot f
We show that culturally transmitted individualism is an important determinant of working from home (WFH). Using individual-level data from the U.S. Current Population Survey (CPS) and the European Social Survey (ESS), we compare immigrants and their descendants from different cultural backgrounds residing in the same location. A 10-point increase in country-of-origin individualism (0–100 scale) in
Background The optimal strategy for initial treatment of acute occlusion of superior mesenteric artery (SMA) is debated. The aim of the study was to compare the effectiveness, timelines and outcomes of endovascular versus open surgical treatment in patients with acute SMA occlusion. This was a preplanned substudy of the prospective observational multicenter AMESI (Acute MESenteric Ischaemia) study
Flat bands can induce strong electron correlation effects that help stabilize both magnetic and superconducting states. Here, we carry out angle-resolved photoemission spectroscopy and density functional theory calculations to study the electronic structure of the Co-pnictides CaCo2As2 and LaCo2P2. We find that the kz Fermi topology of ferromagnetic LaCo2P2 is markedly two-dimensional, while the a
β-Alanine synthase (βAS), which is a dizinc metalloenzyme, catalyzes the irreversible hydrolysis of N-carbamyl-β-alanine (NCβA) to β-alanine. This enzyme has potential applications for β-amino acid production. Understanding the reaction mechanism and selectivity of βAS at atomic details can help design and engineer the enzyme for cascade biocatalysis. Here, the protonation states of two conserved
One of the major recent breakthroughs has been the discovery of the last major merger to happen in the history of the Milky Way. Around 10 Gyr ago, the galaxy Gaia Enceladus with an estimated ∼10% of the Milky Way mass, fell into the potential of our Galaxy, bringing a large amount of stars that can be identified through their unique chemical and kinematic signatures. Simulations have long predict
The objective of this study is to develop a prototype of an electronic system based on computer vision that enhances the level of autonomy in mission execution by a UAV. Unlike a final embedded electronic system, this prototype utilizes the capabilities of a personal computer, allowing for rapid configuration of equipment, algorithm refinement, and program adjustments.The developed system includes
Evolutionary transitions to nocturnality in bees are rare and recent, occurring independently across several families, with activity ranging from crepuscular to strictly nocturnal. Although the “enemy-free” and “competition-free space” hypotheses are often suggested as drivers, these remain little explored in bees. In sympatric diurnal and nocturnal carpenter bees, we show that in addition to temp
Research on birds suggests that extreme weather events during development may have long-lasting consequences on form and function. The underlying cellular mechanisms mediating such phenotypic effects are poorly studied. We raised Japanese quail in warm (30°C) or cold (10°C) temperatures from hatching until adulthood and then measured mitochondrial metabolism in intact blood cells at representative
In this work, we have studied how the choice of the continuous phase oils affects droplet-internal acoustic manipulation and mapped the acoustic properties of the selected oils to evaluate their compatibility with droplet acoustofluidic methods. The selection of continuous phase included hydrocarbon, fluorinated, and silicone oils. To map the acoustic properties of the oils, we measured their spee
In this work, we explore Higgs boson decays into dark matter (DM) within the context of the freeze-in mechanism under stronger coupling scenarios. Our analysis focuses on scalar DM candidates interacting through the Higgs portal, where the coupling strength can be significant without establishing thermal equilibrium, owing to a suppressed reheating temperature. We find that for DM masses as low as
Background: Osteoarthritis (OA) and inflammatory arthritis (IA), including rheumatoid arthritis (RA), psoriatic arthritis (PsA), and axial spondylarthritis (axSpA), are leading causes of disability worldwide, significantly impacting health and quality of life. Sleep issues are highly prevalent in these populations, exacerbating pain, fatigue, and disease activity. However, there is a dearth of evi
This special issue introduction explores dialogic organizing centred on affirming public engagement for hope and solidarity. We propose ways of retheorizing and revitalizing dialogic perspectives and practices. In so doing we take our cue a Bakhtinian understanding of dialogue; however, we suggest that it is necessary to move beyond this foundational understanding. Instead, it needs to be read in
Cellular senescence, a phenomenon characterized by the accumulation of dysfunctional, metabolically active cells, is increasingly recognized to be a key player in aging-related metabolic disorders. It is accelerated by hyperglycemia through various molecular pathways, positioning it as a critical mechanism in the pathophysiology of type 2 diabetes mellitus (T2D) and a potential therapeutic target.
Accurately predicting terrestrial ecosystem responses to climate change over long-timescales is crucial for addressing global challenges. This relies on mechanistic modeling of ecosystem processes through land surface models (LSMs). Despite their importance, LSMs face significant uncertainties due to poorly constrained parameters, especially in carbon cycle predictions. This paper reviews the prog
Background: The impact of surgical specialization on long-term survival in patients undergoing emergent colon cancer resections remains unclear. Method: A retrospective analysis was conducted on all patients who underwent emergent colon cancer resections at a secondary care hospital between 2010 and 2020. The most senior surgeon performing the procedures was classified as colorectal surgeon (CS) o
