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One of the most important factors when low energy houses are built is to have good heat recovery on the ventilation system. However, standard ventilation units use a considerable amount of electricity. This article discusses the consequences on a system level of using hybrid ventilation with heat recovery. The simulation program TRNSYS was used in order to investigate a ventilation system with hea

Popular Abstract in Swedish Samhällets produktion av avfall är ett ständigt pågående problem. Tidigare metodik för att ta hand om avfallet genom att deponera det på soptippar håller på att förändras. Genom beslut inom EU har det kommit krav på sortering av avfallet vilket har lett till att hushållsavfall inte längre kommer att få deponeras. Ett sätt att ta hand om avfall är att förbränna avfallet

The presence of Fe-bound cyanide ligands in the active site of the proton-reducing enzymes [FeFe]-hydrogenases has led to the hypothesis that such Bronsted-Lowry bases could be protonated during the catalytic cycle, thus implying that hydrogen isocyanide (HNC) might have a relevant role in such crucial microbial metabolic paths. We present a hybrid quantum mechanical/molecular mechanical (QM/MM) s

We study the folding thermodynamics of a beta-hairpin and two three-stranded beta-sheet peptides using a simplified sequence-based all-atom model, in which folding is driven mainly by backbone hydrogen bonding and effective hydrophobic attraction. The native populations obtained for these three sequences are in good. agreement with experimental data. We also show that the apparent native populatio

Soot formation in a reverse-flow partial-oxidation reactor for reforming of gasifier producer gas has been studied. The process was modeled using a detailed reaction mechanism to describe the kinetics of soot formation. The numerical model was validated against experimental data from the literature and showed good agreement with reported data. Nine cases with different gas compositions were simula

The heme peroxidases have a histidine group as the axial ligand of iron. This ligand forms a hydrogen bond to an aspartate carboxylate group by the other nitrogen atom in the side chain. The aspartate is not present in the globins and it has been suggested that it gives an imidazolate character to the histidine ligand. Quantum chemical calculations have indicated that the properties of the heme si

Prefekt Kontaktinformation E-post: else [dot] lytken [at] fysik [dot] lu [dot] se Telefon: +46 46 222 30 60 Mobil: +46 70 344 33 10Organisation Partikel- och kärnfysik Rumsnummer: K319 Hämtställe: 14 WebbplatsElse Lytkens profil i Lunds universitets forskningsportalAndra roller Prefekt Fysiska institutionen Projektledare Partikel- och kärnfysik Universitetslektor Partikel- och kärnfysik Publikatio

https://www.fysik.lu.se/else-lytken - 2026-07-04

Hållbar framdrivning och kraft fokuserar på att utveckla energieffektiva tekniker med låga utsläpp för transport och kraftgenerering. Här integreras avancerade material, förnybara bränslen, elektrifiering och energilagringssystem för att minimera miljöpåverkan. Forskningen omfattar förbränning i gasturbiner och jetmotorer, hållbara flygbränslen, roterande detonationsmotorer, förbränning i ramjet-

https://www.energy.lth.se/sv/forskning/hallbar-framdrivning-kraft - 2026-07-03

This thesis investigated the modeling and control problems in the context of the flex-fuel compression-ignition (CI) engine and fuel cell, which shows great potential in the transition from fossil fuel to renewable energy sources.The modeling parts included the flex-fuel engine combustion process and intake system, and the system scale fuel cell model.The flex-fuel engine gas system models describ

The present work provides a new perspective on super adiabatic combustion (SAC) of fuel/air mixtures involving methane, ethane, propane, butane, heptane, iso-octane, 1-hexene, toluene, ammonia, and hydrogen. The simulations cover the temperature range of 1200–2000 K, initial pressures of 1–50 atm, and equivalence ratios of 0.5–2.0. The detailed chemical kinetic mechanism C3MechV3.5 has been used f

Date Speaker Topic Author ads December 15, 2020 Eero Vaher GAIA EDR3     December 8, 2020 Christian Sahlholdt astronomical databases: miscellaneous; astrometry; stars: distances; Astrophysics - Astrophysics of Galaxies de Jong et al. Benford's law in the Gaia universe November 17, 2020 Thomas Ronnet Planetary Science Deng et al. Early oxidation of the martian crust triggered by impacts November 10

https://www.astro.lu.se/calendar/journal-club/past-speakers-2016-2020 - 2026-07-03

Research project Project's title: Pufendorf Energy Justice Theme 2016/2017Project's duration: 2016-2017Contact person: Alf HornborgOverviewThe current energy transition calls for a rethinking of ethical dilemmas on how to allocate the benefits and costs of scarce energy resources, not only among the citizens of urban and rural; north and south; poor and rich but also between current and future gen

https://www.keg.lu.se/en/research/research-projects/finished-research-projects/pufendorf-energy-justice-theme-20162017 - 2026-07-03

Atomic layer deposition (ALD) is an outstanding deposition technique to deposit highly conformal and uniform thin films with atomic precision. In particular, ALD of transition metal oxide layers from metal amido complexes and water finds its way in several technological fields, including green energy devices and in the semiconductor industry. These ALD reactions are believed to follow a reaction s

Myoglobin has the ability to react with hydrogen peroxide, generating high-valent complexes similar to peroxidases (compounds I and II), and in the presence of excess hydrogen peroxide a third intermediate, compound III, with an oxymyoglobin-type structure is generated from compound II. The compound III is, however, easily one-electron reduced to peroxymyoglobin by synchrotron radiation during cry

The purpose of the thesis was to design an object storage solution that fitted the modern needs of an urban bicyclist. The project was focused on analyzing today’s needs and whether or not these needs were being met by the current object storage solutions. A presumption was made that present day object storage solutions had stagnated in a small number of solutions that were not necessarily fitted

Reduction of energy use in buildings is fundamental for sustainable development. A computer program for the prediction of energy use in buildings was assessed by comparisons with the energy performance of existing buildings. The program was then used to evaluate the energy saving characteristics of concrete such as air tightness and heat capacity. The impacts on global environmental aspects and li