Copenhagen University Hospital
CURIS (Copenhagen University Research Information System)Not a member yet
395145 research outputs found
Sort by
In preprints:insights into the regulation of haematopoietic stem cell emergence in vitro and in vivo
No full text
Repeated interaction scheme for the quantum simulation of non-Markovian electron transfer dynamics
No full textObservational Signatures of Highly Magnified Gravitational Waves from Compact Binary Coalescence
No full textBeyond States:Ocean Governance in the Anthropocene
No full textFacing the Anthropocene, the ocean legal order encounters hurdles to address rapid, uncertain and unprecedented changes. This study assesses the capacity of the United Nations Convention on the Law of the Sea (UNCLOS) to respond adeptly to complex challenges. Examining the social framework of UNCLOS spanning four decades, this study shows that ocean governance is characterized by a polycentric and dynamic institutional framework. While states are central to this social framework, other structural regulatory forces have enabled and conditioned the evolution of ocean governance. Facing the Anthropocene, this social framework has contributed to UNCLOS’ adaptation, yet not enough to break the liberal pattern generated by its foundational principles or to shift away from a state-centred approach to ocean governance. Through this analysis, the study enriches the current dialogue on the adaptive potential of international legal instruments in addressing complex global challenges amidst the Anthropocene.Facing the Anthropocene, the ocean legal order encounters hurdles to address rapid, uncertain and unprecedented changes. This study assesses the capacity of the United Nations Convention on the Law of the Sea (UNCLOS) to respond adeptly to complex challenges. Examining the social framework of UNCLOS spanning four decades, this study shows that ocean governance is characterized by a polycentric and dynamic institutional framework. While states are central to this social framework, other structural regulatory forces have enabled and conditioned the evolution of ocean governance. Facing the Anthropocene, this social framework has contributed to UNCLOS’ adaptation, yet not enough to break the liberal pattern generated by its foundational principles or to shift away from a state-centred approach to ocean governance. Through this analysis, the study enriches the current dialogue on the adaptive potential of international legal instruments in addressing complex global challenges amidst the Anthropocene.</p
Multi-year water level drawdown and wildlife grazing drive wetland vegetation succession
No full textIn wetlands, multi-annual water level drawdowns and herbivory can induce cyclic vegetation succession. While water level drawdowns can be used in wetland management to increase the area of reed vegetation, an important habitat for wetland birds, herbivory may interfere with this process. Here, we studied the combined effects of a human-induced water level drawdown, i.e. the intentional temporarily and large scale lowering of the water level, and herbivores on wetland vegetation development. In the Oostvaardersplassen wetland, we used satellite imagery to assess vegetation development with and without water level drawdown and with and without red deer presence (introduced in 1992). An herbivore exclosure experiment (2022-2024) across an elevational gradient tested the effect of grazing on vegetation development during a drawdown. Satellite imagery showed an expansion of reed cover by 560 ha in the period without red deer (1987-1991) and by 420 ha with red deer (2020-2024), only in the area with drawdowns. The exclosure experiment highlighted an interaction between herbivory and water depth: The presence of red deer at drier locations had minor effects on reed expansion, whereas reed expansion was strongly inhibited at wet locations with presence of geese. Our findings provide large-scale quantitative evidence of the interaction between a water level drawdown and herbivory on the restoration of reed-dominated wetlands. We show the effectiveness of a water level drawdown, when dry conditions can be maintained for several consecutive years, as a restoration tool to promote reed development and the potential to steer the impact of herbivores during restoration
Andreev spin relaxation time in a shadow-evaporated InAs weak link
No full textAndreev-spin qubits are a new qubit platform that merges superconductivity with semiconductor physics. The mechanisms dominating observed energy relaxation remain unidentified. We report here on three steps taken to address these questions in an InAs nanowire weak link. First, we designed a microwave readout circuit tuned to be directly sensitive to the spin-dependent inductance of the weak link so that higher orbital states are not necessary for readout-this resulted in larger windows in parameter space in which the spin-state properties can be probed. Second, we implemented a successful gap-engineering strategy to mitigate quasiparticle poisoning. Third, the weak link was fabricated by in situ shadow evaporation, which has been shown to improve atomic-scale disorder. We show how our design allows characterization of the spin stability and coherence over the full range of magnetic flux and gate voltage of an odd-parity bias point. The spin-relaxation and dephasing rates are comparable with those of the best devices previously reported, suggestive that surface atomic-scale disorder and quasiparticle poisoning are not linked to spin relaxation in InAs nanowires. Our design strategies are transferrable to novel materials platforms for Andreev qubits, such as germanium and carbon