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The transition to a more decentralised energy system, by diversifying energy supply, and expanding renewable energy, is a declared EU objective as is evident from the Clean Energy for All Package. The EU has identified Energy Communities as one of the organisational forms that can facilitate this transition. Greece is a critical case within Europe. Research indicates that Energy Communities could

Attosecond pulses are central to the investigation of valence- and core-electron dynamics on their natural timescales1–3. The reproducible generation and characterization of attosecond waveforms has been demonstrated so far only through the process of high-order harmonic generation4–7. Several methods for shaping attosecond waveforms have been proposed, including the use of metallic filters8,9, mu

https://www.nano.lu.se/sites/nano.lu.se/files/nanoscience_colloquium2012_yi_cui.pdf - 2026-06-28

Energy harvesting enables products to become more self-sufficient of power and offers the possibility to avoid battery exchange and power cables. The performance and applicability of the most promising or popular small scale energy harvesting technologies are investigated in this thesis. The focus lies on the amount of potential energy that can be harvested and how limited the technology is to a s

Energiförbrukningen i elektronikprodukter minskar samtidigt som prestandan för solceller hela tiden ökar. Nya solcellstyper med lägre priser skapar nya möjligheter för använding även i små elektronikprodukter. Att samla energi från omgivningen, t.ex. från ljuset i ett rum, och använda det för att driva små elektronikprodukter kallas i ett vidare begrepp för ”energy harvesting” (SV: energiskördningThe power consumption of electronic devices is decreasing at the same time as the performance of solar cells is increasing. Solar cells based on new technologies with lower costs are becoming commercially available, creating new opportunities for use in small electronic products. The concept of capturing ambient energy, such as light, and using it to power small electronic devices is known as ener

In the present study the thermo-hydraulic characteristics of geyser in the cryogenic fuel transportation pipe of a liquid rocket is experimentally investigated using liquid nitrogen. The typical thermo-hydraulic appearances are characterized and analyzed in the geyser process to effectively recognize the occurrence of geyser in practical engineering. The effect of interfering factors such as heat

https://www.iea.lth.se/en/about - 2026-06-27

In this paper, we analyse community energy (CE) projects in urban settings. Building on insights from the literature on the geography of sustainability transitions, we examine how contextual conditions promote or hinder the development of CE. Furthermore, reflecting on calls for greater attention to agency in transitions, we investigated how actors engaged in urban CE projects exploit beneficial c

The total area of Uttarakhand is about 53,483 km2, where 86% area is mountainous and 65% is covered by forest. The two main rivers Ganga and Yamuna originate from Uttarakhand. In addition to these two rivers, Uttarakhand has a large river and canal network that provides hydropower with immense reach. In 1907, one of India’s first hydropower stations was commissioned at Galogi (Uttarakhand). At p

Exploitation of alum shale is a controversial subject in Sweden due to the history of pollution of the environment and groundwater, from past mining industries. The extraction of vanadium from alum shale is no different. Nevertheless the metal is a valuable resource used in tools, building, industries and aerospace materials. A look to the future reveals that vanadium may play a role in renewable

Cassava is the third-most important food source in the tropics after rice and maize. Cassava is the staple food for about half a billion people in the World. It is a tropical crop grown mainly in Africa, Asia, and South America. It can be cultivated on arid and semiarid land where other crops do not thrive. During the processing of cassava into chips, flour or starch, enormous amount of wastes are

Popular Abstract in English The global energy consumption is increasing regularly due to the increased population and economic development. In contrast the primary energy sources, fossil fuels, are declining substantially. The combustion of fossil fuels contributes to the global climate change via greenhouse effects. To minimize these negative effects a carbon-neutral energy production is demandedThe electrochemical communication between microorganisms and electrodes has substantial implications both for basic understanding of biological electron transfer as well as in diverse applications, such as, microbial electrochemical system (MES), microbial biosensors and in production of valuable chemicals. In these systems the extracellular electron transfer (EET) from microbial metabolism to ele