Unexpected Magnetism of Small Silver Clusters

The ground-state electronic, structural, and magnetic properties of small silver clusters, Ag$_n$ (2$\le$n$\le$22), have been studied using a linear combination of atomic Gaussian-type orbitals within the density functional theory. The results show that the silver atoms, which are diamagnetic in bulk environment, can be magnetic when they are grouped together in clusters. The Ag$_{13}$ cluster with icosahedral symmetry has the highest magnetic moment per atom among the studied silver clusters. The cluster symmetry and the reduced coordination number specific of small clusters reveal as a fundamental factor for the onset of the magnetism.Comment: 4 pages, 4 figure

Environmental and Energy Performance of the Biomass to Synthetic Natural Gas Supply Chain

A quarter of the total primary energy demand in the European Union is met by natural gas. Synthetic natural gas produced through biomass gasification can contribute to a more sustainable energy supply system. A chain analysis of the energetic performance of synthetic natural gas where the upstream, midstream and downstream part are included has not been found in literature. The energy performance of the possible large-scale application of synthetic natural gas is therefore unsure. A model was designed to analyse the performance of the biomass to synthetic natural gas chain and to estimate the effect of 1% synthetic natural gas in the energy system. A break-even distance is introduced to determine whether it is energetically feasible to apply pretreatment. Results show that torrefaction and pelleting are energetically unfeasible within the European Union. Emissions can be reduced with almost 70% compared to a fossil reference scenario. Over 1.2 Mha is required to fulfil 0.25% of the total primary energy demand in the European Union

The use of chest magnetic resonance imaging in interstitial lung disease: A systematic review

Thin-slices multi-detector computed tomography (MDCT) plays a key role in the differential diagnosis of interstitial lung disease (ILD). However, thin-slices MDCT has a limited ability to detect active inflammation, which is an important target of newly developed ILD drug therapy. Magnetic resonance imaging (MRI), thanks to its multi-parameter capability, provides better tissue characterisation than thin-slices MDCT. Our aim was to summarise the current status of MRI applications in ILD and to propose an ILD-MRI protocol. A systematic literature search was conducted for relevant studies on chest MRI in patients with ILD. We retrieved 1246 papers of which 55 original papers were selected for the review. We identified 24 studies comparing image quality of thin-slices MDCT and MRI using several MRI sequences. These studies described new MRI sequences to assess ILD parenchymal abnormalities, such as honeycombing, reticulation and ground-glass opacity. Thin-slices MDCT remains superior to MRI for morphological imaging. However, recent studies with ultra-short echo-time MRI showed image quality comparable to thin-slices MDCT. Several studies demonstrated the added value of chest MRI by using functional imaging, especially to detect and quantify inflammatory changes. We concluded that chest MRI could play a role in ILD patients to differentiate inflammatory and fibrotic changes and to assess efficacy of new ILD drugs

Synthetic Environments as design tool - A case study

Successful product design requires intensive communication between all stakeholders of the product or service in the very beginning of the development process. In this stage of the development, often communication is inefficient due to the absence of a prototype. We propose the use of a synthetic environment as a methodology and tool to support communication about a concept design among stakeholders; e.g., designers, end-users, and manufacturers. A case study with industrial partners revealed that a low-cost, easy accessible setup, consisting of haptic and visual simulation only, was sufficient for a realistic evaluation of a product and to provide meaningful information to improve its design

Opportunities and Barriers for Biomass Gasification for Green Gas in the Dutch Residential Sector

The Dutch residential sector is locked-in into natural gas for the supply of heat. The expected depletion of national reserves and induced earthquakes in the production area are reasons to aim to escape this lock-in. The Dutch government and key players in the natural gas sector have expressed large green gas ambitions. This paper explores the opportunities and barriers of biomass gasification for green gas production and application in the residential sector. The Technological Innovation Systems and Multi-Level Perspective were applied as sustainability transition frameworks to explore the current technological state of biomass gasification and the developments in the residential sector. Four limitations were observed from a supply perspective; little financial space for demonstration plants, absence of technology specific policy, lagging market developments and insecurities related to biomass availability. On the demand side, clear barriers hampering change are observed, providing large opportunities for green gas. Key players in the natural gas regime take no substantial responsibility, despite their potential ability to contribute to overcoming systemic barriers. Therefore, this research concludes that the current green gas ambitions set by the Dutch government are not feasible and that the government may address this with technology specific policy, substantial research and development subsidies and funding

Bridging the gap between educational research and educational practice: The need for critical distance

The contributions to this special issue explore a range of different aspects of the relationship between research and practice in education. All start from the assumption that there is a gap between research and practice. Some authors take a descriptive approach in that they try to outline the nature of and reasons for the alleged gap between research and practice. Educational research is, after all, never simply research on education but always in some sense also research for education. This, in sum, reveals that it is as important to try to bridge gaps between research and practice as it is to keep a critical distance between the two, both from the side of educational research and from the side of educational practice

Interventions that support novice nurses' transition into practice:A realist review

Background: Many transition-to-practice programs have been developed to support novice nurses during their first years into practice. These programs report improvements in retention, wellbeing and clinical competence, but the driving mechanisms of these interventions remain largely unclear. Objective: To identify how transition-to-practice programs for novice nurses work and in what contexts they work successfully. Methods: A realist review was conducted. Eligibility criteria included intervention studies aimed at novice nurses in their first two years of practice that reported outcomes on organizational or individual nurse level. The underlying theory of included transition-to-practice programs was extracted, and relevant contextual factors, mechanisms and outcomes were explored and synthesized into context-mechanism-outcome (CMO) configurations. The search was limited to studies between 2000 and 2023. Results: A total of 32 studies were included, evaluating 30 different transition-to-practice programs with a wide range of intervention components including stress management, clinical education, professional and peer support, and ward rotations. Transition-to-practice programs were often designed without a theoretical foundation. Driving mechanisms behind the programs pertained to psychological, professional, and social development. Contextual factors that activated the mechanisms were enabling conditions for mentors and novice nurses, selection and motivation of novice nurses and organizational culture. Conclusions: Current transition-to-practice programs primarily focus on the individual and professional development of nurses. However, transition to practice can benefit from a systemic approach that includes development initiatives on the organizational level. Registration: PROSPERO ID CRD42021268080, August 15, 2021. Tweetable abstract: Context and mechanisms determine successful implementation of transition to practice programs for novice nurses. @transitiontopractice @nurseworkforce.</p