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Polymer gears are becoming more and more interesting parts of various machines; they are used in ever-more-demanding operating conditions. Due to their good mechanical properties, lightweight, and low noise during operation, they tend to substitute metallic gears in some traditional applications, and they also enter new applications such as e-bikes. A reliable design of polymer gears remains, to d
Superconductivity and cryogenics were recognized as necessary to the European Spallation Source (ESS) project from its earliest days. This chapter provides a highlevel overview of the ESS cryogenics system and describes the reasoning behind early conceptual design choices. Some requirements for the cryogenic system did change over time and that evolution is discussed. In addition, the recruitment
Understanding stellar evolution and its effect on planetary systems is crucial for correctly interpreting the chemical constraints of exo-planetary material that can be given to us by white dwarfs. This article will describe how asteroids, moons, and comets, as well as boulders, pebbles and dust, evolve into eventual targets for chemical spectroscopy, and how planets and companion stars play a vit
On December 9, 2016, South Korea's National Assembly voted to impeach the country's president, Park Geun-hye, over abuse of power among other charges. Three months later, the Constitutional Court upheld the impeachment and she was dismissed from office-the first South Korean president to be removed this way. New elections were called. Park was then made the subject of a criminal investigation and
Background: Little is known about whether the protective effect of marriage on alcohol use disorder (AUD) varies by cultural background. Aims: Using Swedish national data, we examined whether marriage is associated with a stronger reduction in AUD risk among Swedes of a Swedish background (i.e. those with two Swedish-born parents) compared to Swedes with a foreign background (i.e. one or two forei
Context. The nuclear stellar disc (NSD) is a flat and dense stellar structure at the centre of the Milky Way. Previous work has identified the presence of metal-rich and metal-poor stars in the NSD, suggesting that they have different origins. The recent publication of photometric, metallicity, proper motion, and orbital catalogues allows the NSD stellar population to be characterised with unprece
This article compares the policy and collective bargaining responses in the three Scandinavian countries to the cost-of-living crisis that began in 2021. The countries are known for their coordinated and consensual response to exogenous shocks. However, Scandinavian variants of neoliberal reforms, the 2009 Financial Crisis and, more recently, the COVID-19 pandemic have challenged the model. The co
β-Phosphoglucomutase (β-PGM) has served as an important model system for understanding biological phosphoryl transfer. This enzyme catalyzes the isomerization of β-glucose-1-phosphate to β-glucose-6-phosphate in a two-step process proceeding via a bisphosphate intermediate. The conventionally accepted mechanism is that both steps are concerted processes involving acid-base catalysis from a nearby
Phosphate ester hydrolysis is fundamental to many life processes, and has been the topic of substantial experimental and computational research effort. However, even the simplest of phosphate esters can be hydrolyzed through multiple possible pathways that can be difficult to distinguish between, either experimentally, or computationally. Therefore, the mechanisms of both the enzymatic and non-enz
This paper examines the origins of formal education in colonial Zambia and its long-term consequences for educational attainment and gender inequality. Combining novel panel data on the location of missionary stations and mission school enrolment by gender and missionary society from 1924 to 1953 with contemporary data from the 1990 Zambian census, we ana-lyze the long-term effects of missionary e
In recent years, microalgae have gained considerable importance as potential source of biofuels and bioplastics. However, these markets are still developing, as the high costs of cultivation ask for exploiting microalgae into new areas and with a biorefinery approach towards a multicomponent cascade extraction process. Here, a sequential processing strategy was used to extract starch with high yie
Mars science fiction (SF) has interacted with Mars science ever since the advent of modern science, and has largely influenced public perceptions of the red planet and its exploration. In this chapter, it is argued that it has not only shaped numerous (mis)conceptions about the possibilities of indigenous Martian life, eventual human settlement and its challenges, but that it also has a large outr
Language is a complex semiotic system based on the context-sensitive use of signs, in contrast to the comparatively rigid systems of signals used by other animals, making it a uniquely human bio-cultural adaptation. But equally unique for human beings are other semiotic systems, and their corresponding sociocultural practices, such as (representational) gesture, the use of pictures and music. Cruc
We reconstruct Quantum Mechanics in a way that harmonizes with classical mechanics and electromagnetism, free from mysteries or paradoxes such as the collapse of the wave function or Schrödinger’s cat. The construction is inspired by de Broglie’s and Schrödinger’s wave mechanics, while the unifying principle is Hamilton’s principle of least action, which separates natural laws from particular circ
Purpose: The purpose is to investigate how the coronavirus disease 2019 (COVID-19) pandemic changed relocation behavior in an advanced economy. We compare manufacturing relocations before and during the pandemic to identify differences and similarities over time and between offshoring and backshoring. Design/methodology/approach: We use an exploratory longitudinal trend survey approach with data f
