Sökresultat

Primary aluminium production is energy- and GHG-intensive in which electrolysis is by far the most energy- and GHG-intensive process. This paper’s aim is to study the effects on (1) primary energy use, (2) GHG emissions and (3) energy and CO2 costs when energy end-use efficiency measures are implemented in the electrolysis. Significant savings in final and primary energy use, GHG emissions and ene

Industrial energy efficiency is important for reducing CO2 emissions and could be a competitive advantage for companies because it can reduce costs. However, cost-effective energy efficiency measures are not always implemented because there are barriers inhibiting their implementation. Drivers for energy efficiency could provide means for overcoming these barriers. The aim of this article was to s

Improved energy efficiency in supply chains can reduce both environmental impact and lifecycle costs, and thus becomes a competitive advantage in the work towards a sustainable global economy. Viewing the supply chain as a system provides the holistic perspective needed to avoid sub-optimal energy use. This article studies measures relating to technology and management that can increase energy eff

According to the Energy Efficiency Directive executed by the European Union, each member state is obliged to set a national target on energy efficiency. This requirement constitutes the basis for governments to formulate policy measures directed towards industrial companies. Such policy measures, along with the demand for cost-effective production to remain competitive on the market, motivates ind

The aluminium industry is facing a challenge in meeting the goal of halved greenhouse gas emissions by 2050, while the demand for aluminium is estimated to increase 2–3 times by the same year. Energy efficiency will play an important part in achieving the goal. The paper's aim was to investigate possible production-related energy efficiency measures in the aluminium industry. Mining of bauxite and

This paper considers the contemporary significance of family history and, more generally, cross-national heritage by studying a Swedish television programme in which Swedish Americans visit Sweden to find out more about their ancestors and possibly to meet present-day relatives. Saar’s theory of three levels of genealogy—history, evaluation, and genre—is used as the analytical framework. The findi

PURPOSE: At ∼3 years of age ∼50% of the children born with cleft palate present with phonological/articulatory difficulties. Differences between children with and without cleft palate have been reported to decline with age; however, the phonology in children with cleft palate at pre-school age/early school age has rarely been explored. The purpose of this study was to assess phonology in children

In the wake of the current environmental crisis, scholars of late antique Christianity are beginning to study Christian attitudes towards the natural world. How did the early Christians relate to their environment? This article explores perceptions of trees, surveying the writings of Tertullian, Basil of Caesarea, and Sozomen the historian. What did an arboreal plant do, according to patristic aut

Background: Multi-country studies assessing the quality of maternal and newborn care (QMNC) during the COVID-19 pandemic, as defined by WHO Standards, are lacking.Methods: Women who gave birth in 12 countries of the WHO European Region from March 1, 2020 - March 15, 2021 answered an online questionnaire, including 40 WHO Standard-based Quality Measures.Findings: 21,027 mothers were included in the

We show that tree-like resolution is not automatable in time no(log n) unless ETH is false. This implies that, under ETH, the algorithm given by Beame and Pitassi (FOCS 1996) that automates tree-like resolution in time no(log n) is optimal. We also provide a simpler proof of the result of Alekhnovich and Razborov (FOCS 2001) that unless the fixed parameter hierarchy collapses, tree-like resolution

Models estimate that up to 80% of all butterfly and moth species host vertically transmitted endosymbiotic microorganisms, which can affect the host fitness, metabolism, reproduction, population dynamics, and genetic diversity, among others. The supporting empirical data are however currently highly biased towards the generally more colourful butterflies, and include less information about moths.