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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
By introducing a non-fullerene small molecule acceptor as a third component to typical polymer donor: fullerene acceptor binary solar cells, we demonstrate that the short circuit current density (Jsc), open circuit voltage (Voc), power conversion efficiency (PCE) and thermal stability can be enhanced simultaneously. The different surface energy of each component causes most of the non-fullerene ac
Fermentation of dietary fibers by colonic microbiota generates short-chain fatty acids (SCFAs), e.g., propionic acid and butyric acid, which have been described to have "anti-obesity properties" by ameliorating fasting glycaemia, body weight and insulin tolerance in animal models. In the present study, we therefore investigate if propionic acid and butyric acid have effects on lipolysis, de novo l
The authors report a combination of multimodal scanning three-dimensional X-ray diffraction (S3DXRD), X-ray diffraction computed tomography (XRD-CT), and X-ray fluorescence computed tomography (XRF-CT) used for the first time to provide multiscale (spanning the size regime 0.15–500 µm) insight into the aging of a CeO2-ZrO2 solid solution known to exhibit outstanding reversible oxygen storage capac
The Paris agreement on climate change requires rapid reductions in greenhouse gas emissions. One important mitigation strategy, at least in the intermediate future, is the substitution of fossil fuels with bioenergy. However, using agriculture- and forest-derived biomass for energy has sparked controversy regarding both the climate mitigation potential and conflicts with biodiversity conservation.
Using Marcus theory, the electric-field-dependent charge-separation dynamics of non-fullerene acceptors D/A heterojunctions are simulated. On the D/A interface, the excited-state characteristics show obvious differences under different electric field intensities, providing microscopic details of the non-fullerene D/A interface at the atomic level. For different electric field conditions, so the ca
Quantum mechanics forbids perfect discrimination of non-orthogonal states, a limitation that can be exploited to certify intrinsic randomness. Building on this principle, this thesis investigates how limits on state discrimination can be used to generate certified randomness in prepare-and-measure protocols. In particular, we study how the performance of minimum-error quantum state discrimination
MASTER THE SIS of Lund UniversityInternational Master's Programme in Environmental Science(LUMES)1999/2000 LUND A CASE STUDY OF MUNICIPAL SOLID WASTE MANAGEMENT IN THE MUNICIPALITY OF JINGSHAN, CHINA LiLI LUMES Lund University Box 170, S-22100 Lund, Sweden E-mail: env98lil@student3.lu.se SUPERVISOR: PER LUNDGREN M.Sc. Manager of Environmental Affairs Tyrens Infrakonsult AB, Box 27, SE-291 21 Krist
https://www.lumes.lu.se/sites/lumes.lu.se/files/li_li.pdf - 2026-07-11
Urban traffic involves frequent acceleration and deceleration. During deceleration, the energy previously used to accelerate the vehicle is mainly wasted on heat generated by the friction brakes. If this energy that is wasted in traditional IC engines could be saved, the fuel economy would improve. Today there are several solutions to meet the demand for better fuel economy and one of them is the
Popular Abstract in Swedish Järn är den mest vanligt förekommande övergångsmetallen i alla levande organismer, från bakterier till växter och djur och även i människan. Järn är en viktig del av olika proteiner och förekommer mycket ofta i form av en hemgrupp (se bild). Enzymer är proteiner som kan katalysera biokemiska processer. Det ställe i enzymet, där reaktionen sker, kallas enzymets aktiva säIn order to create a heme environment which permits biomimicry of heme-containing plant peroxidases and investigate the role played by the vinyl side chains of the porphyrin ring on the stability and, possibly, catalytic activity of model compounds, a number of new synthetic microperoxidases -– hemin-6(7)-gly-his methyl ester (HGH) and hemin-6(7)-gly-gly-his methyl ester (HGGH) and hemin-6,7-bis(g
Researcher, IT administrator Contact details Email: balazs [dot] konya [at] fysik [dot] lu [dot] se Phone: +46 46 222 80 49Organisation Particle and nuclear physics Room number: K332 Service point: 14 WebpageBalazs Konyas profile in Lund University research portalOther affiliations Member of Strategic Research Area eSSENCE: The e-Science Collaboration Publications Displaying of publications. Sorte
https://www.particle-nuclear.lu.se/balazs-konya - 2026-07-10
Efficient extraction of thermal energy from electrons at the micro- and nanoscale is a long-standing scientific goal that could enable novel types of heat engines, heat management, and solar cell applications. Semiconductor nanowires are a promising system for investigating such devices for several reasons, such as their thermoelectric properties, and the potential to be grown in heterostructures
Background The Paris Agreement has forced the European Parliament to set a target of 35% renewable energies by 2030. In Sweden, the adaptation of the electricity supply chain to renewable energy production has created new opportunities for the electricity supply chain member. New business models between prosumers and electricity suppliers are currently being developed while the whole management of
Hushållen står för cirka 26 % av den årliga energianvändningen i EU. Som följd av EU:s direktiv om energiprestanda i byggnader har det genomförts internationella initiativ i Europa för att hjälpa länder att definiera och inkludera riktlinjer i sina egna byggregler, till exempel för att etablera konceptet nollenergibyggnader. Detta koncept inkluderar passiv-teknik for energibesparande byggande, eneHouseholds are responsible for approximately 26 % of the annual energy use in the EU. Following the EU-directives regarding energy performance in buildings, international initiatives have been taken in Europe to help countries to define and include guidelines in their own building codes, for example, to establish the concept of zero energy buildings, ZEBs. This concept includes passive building en
Denna studie undersöker en parallell indirekt solassisterat värmepump (SAVP) för ett typiskt hushåll i Tyskland. Systemet utgörs av fotovoltaisk-termiska (FVT) solfångare och en värmepump (VP) för att täcka behovet av värme, varmvatten och hushållsel genom att använda solvärme, solel och nätel. Syftet var att utvärdera SAVP-systemets prestanda i Tysklands tre största städer för olika VPar med olikThis study investigates a parallel indirect Solar-Assisted Heat Pump (SAHP) system for a typical household in Germany. The system integrates Photovoltaic-Thermal (PVT) collectors and a heat pump (HP) to meet space heating, domestic hot water, and appliance electricity demands using solar thermal energy, solar electrical energy, and grid electricity. The objectives were to evaluate the thermodynami
(Microsoft Word - Laudatio for H\345kan Hyd\351n_RCSL website and newsletter_final_.docx) Laudatio for Professor Håkan Hydén – Podgórecki Prize 2025 Ferdinando Spina, University of Salento It is with great admiration and honour that I have the privilege, on behalf of the Jury of the Podgórecki Prize, to present the 2025 award to Professor Håkan Hydén, ex aequo with Professor Ulrike Schultz. The no
Microsoft PowerPoint - C-KIC Lund MRummukainen 2017-05-16.pptx MERGE for GAC 19-20 May 2010 Climate change, and the road not yet taken Markku Rummukainen Lund University Markku.Rummukainen@cec.lu.se Foto: Markku Rummukainen MERGE for GAC 19-20 May 2010 Not an academic exercise WMO MERGE for GAC 19-20 May 2010 2ºC 3ºC 4ºC 6ºC MERGE for GAC 19-20 May 2010 Thousand(s of) possible roads to take Fuss m
https://www.climate-kic.lu.se/sites/climate-kic.lu.se/files/c-kic_lund_mrummukainen_2017-05-16.pdf - 2026-07-11
