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This study investigates the interaction dynamics of directly injected (DI) hydrogen and methane jets with wall and neighboring jets in a non-reactive environment, focusing on the influence of wave-shaped piston geometry. Experiments were conducted in a high-pressure optical chamber using a custom 2-hole DI injector, with Schlieren imaging employed to capture the temporal evolution of jet structure
Rotational coherent anti-Stokes Raman spectroscopy (CARS) in fuel-rich hydrocarbon flames, with a large content of hydrogen in the product gases (similar to 20%), has in previous work shown that evaluated temperatures are raised several tens of Kelvin by taking newly derived N-2-H-2 Raman line widths into account. To validate these results, in this work calibrated temperature measurements at aroun
Oxidation phenomena on Laves phase forming Ti-Nb stabilized ferritic stainless steel (EN 1.4509) were studied at 650 degrees C by electron microscopic and electron spectroscopic methods. These investigations reveal a strong competition between Nb and Si for interfacial oxidation at the oxide metal interface that is affected by different segregation rates of Nb and Si at elevated temperatures. In p
Natural gas and hydrogen enriched natural gas has been tested as fuels together with diesel oil and RME in a single cylinder Scania research engine. The gas was introduced as port injection while the diesel was introduced as early direct injection. Because the gas was premixed with air before combustion and the diesel was injected early in the compression stroke, the engine ran close to HCCI mode.
This study presents a comprehensive analysis of the combustion behavior, performance, and NOx emissions in a diesel-hydrogen dual-fuel high-pressure direct injection (HPDI) compression ignition (CI) heavy-duty engine, utilizing numerical simulations validated against operational-engine experimental data. This study aims to investigate this engine by focusing on two distinct hydrogen rail pressures
Modern military multi-role combat aircrafts need an emergency power system (EPU) to maintain back-up power supply for all normal and degraded flight modes. The reason for this requirement is that modern combat aircrafts are designed with built-in relaxed or negative stability. Inability of the Flight Control System to perform continuous, corrective control surface actuation, due to loss of power
In spark assisted homogeneous charge compression ignition (SACI) engines a premixed flame is first established; the propagating flame results in compression heating of the end gas and finally auto-ignition of the gas. Two dimensional direct numerical simulation (2D DNS) and one dimensional (1D) detailed simulations of flame/spontaneous ignition interaction in a lean hydrogen/air mixture under a co
Climate change is more evident than ever as reflected in The European union's environmental directives which say that the carbon emission must be reduced by 20% and 20% of the used energy must come from renewable energy sources until 2020. In Germany political decision has been made that the nuclear power will be replaced by renewable energy in long term. The purpose of the Master Thesis is to
Basic course informationEducation level: Third cycleCourse credits: 3 hpGrade: Fail/Pass; U/GSubject: Wastewater engineeringSwedish name: Resursåtervinning i avloppsvattenEntry requirementsThis course is open for PhD students and professionals interested in wastewater treatment and recycling. For external course participants, a Master's Exam in Water and Environmental Engineering or similar is nee
Universitetslektor Kontaktinformation E-post: anders [dot] ahlstrom [at] mgeo [dot] lu [dot] seOrganisation Miljö- och geovetenskapliga institutionen (MGeo) Hämtställe: 16 WebbplatsAnders Ahlströms profil i Lunds universitets forskningsportalAndra roller Medlem i Strategiskt forskningsområde BECC: Biodiversity and Ecosystem services in a Changing Climate Profilområdesmedlem LU profilområde: Naturb
https://www.nateko.lu.se/sv/anders-ahlstrom - 2026-07-03
Affiliated Contact details Email: robin [dot] tornkvist [at] fysik [dot] lu [dot] seOrganisation Particle and nuclear physics Service point: 14 WebpageRobin Törnkvists profile in Lund University research portal Publications Displaying of publications. Sorted by year, then title. Filter by type AllArticleDoctoral Thesis (compilation)Review article Filter Going against the flow : Revealing the QCD d
https://www.particle-nuclear.lu.se/robin-tornkvist - 2026-07-03
The word “medicine” has its origin from the Latin word medeor or medicor, which means to heal or to cure. Since ancient times, medicines helped to soothe the pain, which eventually resulted in general improvement of life. In a course of a lifetime, the use of medicines can vary according to the necessity. We can have medicines, or drugs, for most of the diseases, and for many others the available The signaling within and between cells in biology is governed by molecular recognition between natural or synthetic ligands and proteins. This thesis project aimed to investigate the thermodynamic properties of specific interaction between synthetic ligands and galectin proteins. The choice of galectins as model proteins resides in the availability of applicability in a full range of complementary
The hydrogen bonds of the imidazolium-ring H atoms of ionic liquids (ILs), 1-alkyl-3-methylimidazolium bis(trifluoromethylsulfonyl)amides ([Cnmim][TFSA], n = 2 to 12 where n represents the alkyl chain length), with the O atom of dimethyl sulfoxide (DMSO) have been elucidated using 1H, 13C, and 15N NMR spectroscopy and soft X-ray absorption and emission spectroscopy (XAS and XES). Density functiona
Stripping gas is generally used to improve hydrogen yields in fermentations. Since CO2 is relatively easy to separate from hydrogen it could be an interesting stripping gas. However, a higher partial CO2 pressure is accompanied with an increased CO2 uptake in the liquid, where it hydrolyses and induces an increased requirement of NaOH to maintain the pH. This enhances the osmotic pressure in the c
ConspectusBy combining results and analysis from cylindrical microjet photoelectron spectroscopy (cMJ-PES) and theoretical simulations, we unravel the microscopic properties of ethanol-water solutions with respect to structure and intermolecular bonding patterns following the full concentration scale from 0 to 100% ethanol content. In particular, we highlight the salient differences between bulk a
The mechanism and kinetics of the radical C-3(2) + C3H8 reaction have been investigated theoretically by direct ab initio kinetics over a wide temperature range. The potential energy surfaces have been constructed at the CCSD(T)/B3//UMP2/B1 levels of theory. The electron transfer was also analyzed by quasi-restricted orbital (QRO) in detail. It was shown that all these channels proceed exclusively
Biträdande universitetslektor Kontaktinformation E-post: linnea [dot] nordlander [at] jur [dot] lu [dot] se Telefon: +46 46 222 11 85Organisation Juridiska institutionen Rumsnummer: 436 Hämtställe: 56 WebbplatsLinnéa Nordlanders profil i Lunds universitets forskningsportalAndra roller Profilområdesmedlem LU profilområde: Mänskliga rättigheter Publikationer Visar av publikationer. Sorterade efter å
https://www.jur.lu.se/linnea-nordlander - 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
