1,405 research outputs found
Framework Report as Guidance for Case Studies
The main goal of the ENHANCE project is to develop and analyse new ways to enhance society's resilience to catastrophic natural hazard impacts. Key for achieving this goal is to analyse new multi-sector partnerships (MSPs) that aim at reduce or redistribute risk, and increase resilience. This document introduces a working definition of partnership, where MSPs are understood as: "...voluntary but enforceable commitments between partners from different sectors (public authorities, private services/enterprise and civil society), which can be temporary or long-lasting. They are founded on sharing the same goal in order to gain mutual benefit, reduce risk and increase resilience." (Rhodes, 1997)
New forms of MSPs are needed, since it appears that existing partnerships are often not effective in managing risk from natural hazards. For example, the different responses to heat-waves and floods in Europe demonstrate that the roles of public, private, and civil society actors (including individuals) in preparing for and responding to catastrophic impacts are often neither clear nor effective. Moreover, actors must often base their risk management strategies on scarce, limited, or inaccurate risk information. Together, these factors can lead to the development of ineffective (prevention and mitigation) and unacceptable measures and unexpectedly large impacts of natural disasters (financial, ecological, health, and social). Moreover, in preparing for and responding to natural hazard impacts, there is also often a lack of clarity on financial responsibilities about who pays what, how much, and when.
Hence, knowing the challenge of managing risks resulting from natural hazards has increased, it becomes clear that these risks cannot be handled by either private sector of the government as single actors, and strategies to increase resilience should therefore incorporate all sectors of society (including closer cooperation between sectors)
Copper-catalysed enantioselective stereodivergent synthesis of amino alcohols
The chirality, or ‘handedness’, of a biologically active molecule can alter its physiological properties. Thus it is routine procedure in the drug discovery and development process to prepare and fully characterize all possible stereoisomers of a drug candidate for biological evaluation. Despite many advances in asymmetric synthesis, developing general and practical strategies for obtaining all possible stereoisomers of an organic compound that has multiple contiguous stereocentres remains a challenge3. Here, we report a stereodivergent copper-based approach for the expeditious construction of amino alcohols with high levels of chemo-, regio-, diastereo- and enantioselectivity. Specifically, we synthesized these amino-alcohol products using sequential, copper-hydride-catalysed hydrosilylation and hydroamination of readily available enals and enones. This strategy provides a route to all possible stereoisomers of the amino-alcohol products, which contain up to three contiguous stereocentres. We leveraged catalyst control and stereospecificity simultaneously to attain exceptional control of the product stereochemistry. Beyond the immediate utility of this protocol, our strategy could inspire the development of methods that provide complete sets of stereoisomers for other valuable synthetic targets.National Institutes of Health (U.S.) (Grant GM-58160
Time resolution of the plastic scintillator strips with matrix photomultiplier readout for J-PET tomograph
Recent tests of a single module of the Jagiellonian Positron Emission
Tomography system (J-PET) consisting of 30 cm long plastic scintillator strips
have proven its applicability for the detection of annihilation quanta (0.511
MeV) with a coincidence resolving time (CRT) of 0.266 ns. The achieved
resolution is almost by a factor of two better with respect to the current
TOF-PET detectors and it can still be improved since, as it is shown in this
article, the intrinsic limit of time resolution for the determination of time
of the interaction of 0.511 MeV gamma quanta in plastic scintillators is much
lower. As the major point of the article, a method allowing to record
timestamps of several photons, at two ends of the scintillator strip, by means
of matrix of silicon photomultipliers (SiPM) is introduced. As a result of
simulations, conducted with the number of SiPM varying from 4 to 42, it is
shown that the improvement of timing resolution saturates with the growing
number of photomultipliers, and that the 2 x 5 configuration at two ends
allowing to read twenty timestamps, constitutes an optimal solution. The
conducted simulations accounted for the emission time distribution, photon
transport and absorption inside the scintillator, as well as quantum efficiency
and transit time spread of photosensors, and were checked based on the
experimental results. Application of the 2 x 5 matrix of SiPM allows for
achieving the coincidence resolving time in positron emission tomography of
0.170 ns for 15 cm axial field-of-view (AFOV) and 0.365 ns
for 100 cm AFOV. The results open perspectives for construction of a
cost-effective TOF-PET scanner with significantly better TOF resolution and
larger AFOV with respect to the current TOF-PET modalities.Comment: To be published in Phys. Med. Biol. (26 pages, 17 figures
The Value of Global Earth Observations
Humankind has never been so populous, technically equipped, and economically and culturally integrated as it is today. In the twenty-first century, societies are confronted with a multitude of challenges in their efforts to manage the Earth system
Internet-Delivered Affect-Focused Psychodynamic Therapy for Adolescent Depression: Treatment Principles and Clinical Application in the ERiCA Project
Internet-delivered, therapist-guided, self-help programs are novel ways to deliver psychotherapeutic interventions adapted from established therapy models. Such programs can be easily accessed online and may offer an important treatment option for patients who struggle with barriers to seeking out and engaging in face-to-face psychotherapy, including depressed adolescents. While there are evidence-based Internet-delivered self-help programs based on cognitive-behavioral therapies (i.e. ICBT) for adolescent depression, a program based on psychodynamic principles (i.e. IPDT) has so far been lacking. In this article we describe the IPDT program developed within the ERiCA project, which has so far been evaluated in two randomized controlled trials (RCTs). We further provide a case example from one of the trials to illustrate the treatment process and therapeutic interaction in detail. Given the novelty of the approach, we will particularly highlight and discuss how a psychodynamic understanding of adolescent development and depressive dynamics as well as affect-focused treatment principles inform the treatment, including the therapist’s role, tasks, and choice of interventions. The potential implications and utility of IPDT for regular clinical practice are elaborated as well as potential research directions for the future
Membrane-bound ribosomes of myeloma cells. III. The role of the messenger RNA and the nascent polypeptide chain in the binding of ribosomes to membranes.
Membrane-bound ribosomes of myeloma cells. II. Kinetic studies on the entry of newly made ribosomal subunits into the free and the membrane-bound ribosomal particles.
Recommended from our members
Attribution: how is it relevant for loss and damage policy and practice?
Attribution has become a recurring issue in discussions about Loss and Damage (L&D). In this highly-politicised context, attribution is often associated with responsibility and blame; and linked to debates about liability and compensation. The aim of attribution science, however, is not to establish responsibility, but to further scientific understanding of causal links between elements of the Earth System and society. This research into causality could inform the management of climate-related risks through improved understanding of drivers of relevant hazards, or, more widely, vulnerability and exposure; with potential benefits regardless of political positions on L&D. Experience shows that it is nevertheless difficult to have open discussions about the science in the policy sphere. This is not only a missed opportunity, but also problematic in that it could inhibit understanding of scientific results and uncertainties, potentially leading to policy planning which does not have sufficient scientific evidence to support it. In this chapter, we first explore this dilemma for science-policy dialogue, summarising several years of research into stakeholder perspectives of attribution in the context of L&D. We then aim to provide clarity about the scientific research available, through an overview of research which might contribute evidence about the causal connections between anthropogenic climate change and losses and damages, including climate science, but also other fields which examine other drivers of hazard, exposure, and vulnerability. Finally, we explore potential applications of attribution research, suggesting that an integrated and nuanced approach has potential to inform planning to avert, minimise and address losses and damages. The key messages are
In the political context of climate negotiations, questions about whether losses and damages can be attributed to anthropogenic climate change are often linked to issues of responsibility, blame, and liability.
Attribution science does not aim to establish responsibility or blame, but rather to investigate drivers of change.
Attribution science is advancing rapidly, and has potential to increase understanding of how climate variability and change is influencing slow onset and extreme weather events, and how this interacts with other drivers of risk, including socio-economic drivers, to influence losses and damages.
Over time, some uncertainties in the science will be reduced, as the anthropogenic climate change signal becomes stronger, and understanding of climate variability and change develops.
However, some uncertainties will not be eliminated. Uncertainty is common in science, and does not prevent useful applications in policy, but might determine which applications are appropriate. It is important to highlight that in attribution studies, the strength of evidence varies substantially between different kinds of slow onset and extreme weather events, and between regions. Policy-makers should not expect the later emergence of conclusive evidence about the influence of climate variability and change on specific incidences of losses and damages; and, in particular, should not expect the strength of evidence to be equal between events, and between countries.
Rather than waiting for further confidence in attribution studies, there is potential to start working now to integrate science into policy and practice, to help understand and tackle drivers of losses and damages, informing prevention, recovery, rehabilitation, and transformation
What if Dutch investors started worrying about flood risk? Implications for disaster risk reduction
Increasingly, roles and responsibilities of the public sector in flood risk management are receiving attention in research and policy. Part of the debate suggests that allocating risk to the private sector increases efficiency as it promotes individual adaptation, thereby reducing the impact if a disaster occurs. In this paper, we analyse the macroeconomic effects as risk-averse investors take flood risk into account in their investment decisions. Our case study is the large Rotterdam area in the Netherlands. Using a spatial computable general equilibium model, we find that the decrease in investments in risky areas leads to a reduction in capital and production in the large Rotterdam area leading to a reduction in potential monetary disaster losses, but not to a reduction in population. The reallocation of risk reduces the long-term impacts from a flood on government tax revenues, but it also leads to welfare losses among households residing in risky regions
- …
