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Popular Abstract in English There is a natural tendency to take advantage of the most convenient energy source available. In this usage, convenient may mean most abundant, easiest to harvest or simplest to handle. Convenient will also correspond to cheapest in many instances. However, some consider it a responsibility to think of the long term costs of the energy we use. No form of energy is free The matured laser-diagnostic techniques of planar laser-induced fluorescence (PLIF) and particle image velocimetry (PIV) were applied to a prototype gas turbine burner operating on various fuels. The work was performed to provide verification of computational fluid dynamic (CFD) models of the combustion of atypical fuels in a gas turbine combustor. The burner was operated using methane and three s

Microbunching instability (MBI) has been one of the most challenging issues in designs of high-brightness beam transport lines for single-pass or recirculating accelerators. Although the intrabeam scattering (IBS) has long been studied in lepton or hadron storage rings as a slow diffusion process or in high-intensity proton linear accelerators as one mechanism for the beam halo, the effects of IBS

PNAS202122586_proof.pdf Astronomers uncover newway tomeasure the speed of stars Ken Croswell, Science Writer As an ambulance speeds toward you, its sirens scream at a high pitch. That pitch suddenly drops when the vehicle rushes by and races away. The change in pitch arises from a well-known phenome- non called the Doppler shift. However, the effect is more than just an amusing oddity. For more th

https://www.astro.lu.se/sites/astro.lu.se/files/2022-01/New%20way%20to%20measure%20speed%20of%20stars%20-%20PNAS%202022.pdf - 2026-06-29

Reconciliation of Inconsistent Frameworks: An Analysis of the WFD and the Renewable Energy Directive By Jonida Abazaj Supervisor Dr. Anne Jerneck (LUCSUS) Co-supervisor Dr. Øystein Moen (Norwegian University of Science and Technology) A Thesis Submitted to Lund University in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE International Master’s Programme in Environmenta

https://www.lumes.lu.se/sites/lumes.lu.se/files/abazaj_jonida_thesis_2010.pdf - 2026-06-29

An integrated system for the production of hydrogen by gasification of biomass and electrolysis of water has been designed and cost estimated. The electrolyser provides part of the hydrogen product as well as the oxygen required for the oxygen blown gasifier. The production cost was estimated to 39 SEK/kg H-2 at an annual production rate of 15 000 ton, assuming 10% interest rate and an economic li

Termiska vätskor är ett tvärvetenskapligt forskningsområde som fokuserar på beteende, interaktion och transport av värme, energi och vätskor. Det omfattar ämnen som termodynamik, fluiddynamik och värmeöverföring och tar upp utmaningar inom energisystem, flyg- och rymdteknik, tillverkning och miljöteknik. Användningsområdena omfattar kylteknik, förbränning, förnybar energi och optimering av värme-

https://www.energy.lth.se/sv/forskning/termiska-vatskor - 2026-06-27

As the Internet of Things (IoT) era emerges the need for ultra-low power (ULP) devices is becoming more eminent. A research-proven approach to achieve ULP consumption is to aggressively lower the supply voltage (VDD) below or in the vicinity of the transistor threshold voltage (Vth) and operate the transistors in the subthreshold (sub-Vth) region. Operating below or near the threshold voltage, i.eAs the Internet of Things (IoT) era emerges the need for ultra-low power (ULP) devices is becoming more eminent. A research-proven approach to achieve ULP consumption is to aggressively lower the supply voltage (VDD) below or in the vicinity of the transistor threshold voltage (Vth) and operate the transistors in the subthreshold (sub-Vth) region. Operating below or near the threshold voltage, i.e

A 128kb ultra-low voltage SRAM, based on a leakage optimized single-WELL 7T bitcell in 28 nm FD–SOI technology is presented. An ideal power management scenario in a single supply system is achieved by permanently keeping the storage elements in the vicinity of the retention voltage. Performance and reliability is regained by boosting the voltage on critical nodes. The cost of voltage boost generat

Hydrogen is most easily used as combustion engine fuel in a spark ignition engine. This chapter starts from the properties of hydrogen and hydrogen mixtures to present the various options for running spark ignition engines on hydrogen, reviewing the power density potential, emissions and efficiency. This is then linked to past and present research and development of hydrogen fueled vehicles, befor

Wale Aboyade's thesis The Potential for Climate Change Mitigation in the Nigerian Solid Waste Disposal Sector: A Case Study from Lagos A thesis presented in partial fulfillment of the requirements of the Lund University International Masters Programme in Environmental Science Lund University, Sweden 22 November 2004 Akinwale Aboyade LUMES 2003/2004 e-mail: wale_aboyade@yahoo.com Lund University Su

https://www.lumes.lu.se/sites/lumes.lu.se/files/aboyade_wale.pdf - 2026-06-29

The Facility for Antiproton and Ion Research (FAIR) in Darmstadt, Germany, provides unique possibilities for a new generation of hadron-, nuclear- and atomic physics experiments. The future antiProton ANnihilations at DArmstadt (PANDA or P ¯ ANDA) experiment at FAIR will offer a broad physics programme, covering different aspects of the strong interaction. Understanding the latter in the non-pertu

Synergistic effects of nanosecond plasma discharge and hydrogen on the combustion characteristics of ammonia/air are numerically studied under conditions relevant to gas turbine combustion chambers. It is shown that increasing the plasma contribution in assisting the flame results in lower NOX emissions by up to 27% than those in flames assisted by hydrogen for the range of operating conditions co

THz absorption spectra have been recorded for the weakly bound molecular complexes of H2O with C2H4 and C2H2 embedded in cryogenic neon matrices at 2.8 K. The observation and assignment of a large-amplitude acceptor OH librational mode of the C2H2 - H2O complex at 145.5 cm−1 confirms an intermolecular CH⋯O hydrogen-bonded configuration of C2v symmetry with the H2O subunit acting as the hydrogen bo