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Sound reduction is complex to estimate for acoustical treatments on ventilation ducts through walls. Various acoustical treatments are available for ventilation ducts, including internal lining (absorption along the inner perimeter), external lagging (external sound insulation), silencer, and suspended ceilings. Previous studies have examined how silencers and the internal lining affect the sound

We investigate the role of the coupling between a spin-orbit coupled semiconductor nanowire and a conventional s-wave superconductor on the emergence of the topological superconducting phase with Majorana bound states in an applied magnetic field. We show that when the coupling is strong, the topological phase transition point is very sensitive to the size of the superconductor and in order to rea

Active generative cooling based on supercritical hydrocarbon fuel is regarded as one of the most promising methods for scramjet thermal management. A large eddy simulation method is used to explore the transient change law of the initial flow, and heat transfer behaviors of supercritical hydrocarbon fuel is in rectangular channels. An oscillation effect can be proved in the convective heat transfe

Everyone has the right to secure water, energy, and food supplies. These essential resources are stressed in many countries. With the current population growth rate and urbanisation, especially in sub-Saharan Africa, there is a need for more food, water, and energy to sustain the increasing population. The aim of this study was to assess the inter-relationship among water and energy in various urb

Background: Medication discrepancies are common, potentially harmful and may result from poor medication information across medical records. Our aim was to describe current medication discrepancy rates, types and severity in hospital, primary and specialized outpatient care in Sweden, as well as comparing these with previous measurements. Methods: Participants visiting health care in Skåne in Nove

In previous publications, the effect of inhomogeneous beam loading of Landau cavities due to a nonuniform fill pattern in a storage ring has been studied with the aim of predicting the resulting longitudinal profiles of the bunches and their time offsets relative to the main rf [T. Olsson et al., Phys. Rev. Accel. Beams 21, 120701 (2018)PRABCJ2469-988810.1103/PhysRevAccelBeams.21.120701]. This wor

Adopting circular business models (CBM) represents a key lever for industry to address urgent global challenges. Prior research recognizes the need for systems thinking and collaboration, but existing CBM tools and methods often implicitly assume that the focal firm has direct access to end customers, usage data and end-of-life phases. However, upstream suppliers who lack this access often produce

Incumbent firms face growing pressure to transform their business towards sustainability. However, business models for sustainability (BMfS) and circularity are grounded in fundamentally different institutional logic which, for incumbents, creates tensions with existing business models, structures and routines. How organizations manage tensions from conflicting logics is explored comprehensively i

Interest in the culture of freshwater crayfish throughout Europe has increased during the last few decades. However, the effects of both introduced and native crayfish species on the structure and diversity of freshwater communities has received little attention. In this paper, I review the impact of crayfish on macrophytes, algae, invertebrates, amphibians and fish; also I compare the impact of i

The idea of personal carbon allowances (PCAs) was presented by the UK Environment Secretary, David Miliband, in 2006. Although no nation state is seriously developing proposals for them, they have been discussed within academia, NGOs and policy-making circles. PCAs can be seen as a logical extension of emissions trading schemes, which has so far only applied at the firm level, to individuals. The

This article concerns a field study about the use of non-invasive manual lighting and shading control to save energy in listed buildings. The system was chosen to limit cabling and masonry work. The test room consists of an individual office located in a historical building in Southern Italy. The room was retrofitted with two roller shades (semi-transparent and blackout) and six LED-based pendants

This chapter focuses on the Arctic since ocean-land interactions are more important for the Arctic than the Antarctic carbon cycle. It explores the complexity of connections between the ocean and land of the North Pole region, and possible impacts on greenhouse gas exchange and lateral carbon flows thereof. Ocean-land interactions in the Arctic integrate the terrestrial and marine environments. Th

This chapter describes the Back to the Future (BTF) approach with illustrations of different data sets and their conclusions and stimulates the growth of such studies. The BTF Project included several studies that "discovered" old data sets, digitized them, carried out analyses and made data and analyses available in publications. An important aspect of the BTF approach is that the evidence of cha

Background: The Swedish National Cataract Register (NCR) collects data on cataract surgery outcomes during March, including patient-reported outcomes using the Catquest-9SF questionnaire for over 11 years. Previous studies from NCR have shown that the preoperative visual acuity has improved over time. The main purpose of this study was to evaluate the Catquest-9SF Rasch scoring performance in this

Drawing on unique sources from the Swedish Migration Agency Archive, this article examines how Afghan asylum seekers and refugees fared in their encounter with Swedish internal and external controls of people seeking protection from persecution during the Cold War. Within a theoretical framework that draws on the concept of statist logic, the history of refugeehood, interactionist sociology and cr

The chapter focuses on the religious aspects of India’s international relations by paying attention to four interrelated developments, discourses and narratives. First is the more general understanding of the role of religion in the Indian national narrative after independence, outlining how India’s policy of non-alignment and exceptionalism served as a site for a particular representation of Indi

Our study aims to increase the understanding about the impacts of potential drivers of pollen richness by using a pollen-vegetation modelling approach. We used the Sutton-Prentice dispersal model implemented in the HUMPOL software suite to explore the effects of factors commonly associated with pollen richness: vegetation diversity (plant richness and evenness), land-cover characteristics (patch r

Mitigating climate change will require large-scale changes to energy systems. Two examples are increased use of renewable energy resources and electrification of the transport sector. These changes increase demand for metals. This chapter looks into which metals are used in renewable energy technologies and why, how much is required to transition the global energy system and which countries hold t