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The terrestrial biota plays an important role in the regulation of atmospheric composition and climate. Surface albedo and energy partitioning are an established component of climate models. More recently, biogeochemical climate feedbacks through the terrestrial carbon cycle have become the focus of attention; a large proportion of the projected reduced global carbon sink at the end of the 21st ce

https://www.nateko.lu.se/research/greenhouse-gas-and-biosphere-atmosphere-trace-gas-fluxes/reactive-trace-gases - 2026-07-23

Popular Abstract in Swedish Undersökningarna som presenteras i avhandlingen behandlar mätning av produkter från och händelser i förbränningsprocessen genom att använda laserbaserade mätmetoder. Ett antal olika körfall, som HCCI och partially premixed combustion (PPC), har undersökts. I de första mätningarna som presenteras jämförs uppmätta flödesfält i cylindern med resultat från CFD och blåsriggThe work presented in this thesis deals with measuring in-cylinder combustion species and events using different laser-based diagnostic methods. A variety of engine operating modes, like HCCI and partially premixed diesel combustion, have been investigated. In the very first measurements, in-cylinder flow-fields were compared to CFD and steady-state blow rig results. After that, the ignition and

The nuclear equation of state (EOS) is probed from statistical parameters, determined in an excitation function experiment on p + Xe-nat reactions at 200-1400 MeV. Total charge (Z) distributions follow a cascade-[multi]fragmentation-evaporation (CFEM) model well. The caloric curve in regions supposedly dominated by fast processes is compatible with a pure statistical multifragmentation (SMM) proce

Semiconductor nanostructure based devices provide new opportunities for contributing to a sustainable energy usage. This includes harvesting of energy (solar cells) and saving of energy, e.g. in lighting (light-emitting diodes, LEDs) and transfer of energy (power devices). However, development and improvement of nanostructure devices requires thorough characterization and understanding on a singleSemiconductor nanostructure based devices provide new opportunities for contributing to a sustainable energy usage. This includes harvesting of energy (solar cells) and saving of energy, e.g. in lighting (light-emitting diodes, LEDs) and transfer of energy (power devices). However, development and improvement of nanostructure devices requires thorough characterization and understanding on a single

Background: Dosimetry in radionuclide therapy often requires the calculation of average absorbed doses within and between spatial regions, for example, for voxel-based dosimetry methods, for paired organs, or across multiple tumors. Formation of such averages can be made in different ways, starting from different definitions. Purpose: The aim of this study is to formally specify different averagin

This thesis was initiated with Toyota Material Handling Europe. The aim of the project was to find a business area in the world of material handling, and develop a conceptual design fulfilling the material handling need. Stepping outside of what is considered conventional material handling, I looked for a new context within consumer trends and future predictions. I found a correlation between th

NGEN16 course evaluation 2019 Physical Geography LU Course Summary for NGEN16 Biosphere-atmosphere Interactions” ht2019 Course coordinator: Harry Lankreijer Teachers in the course: Thomas Holst, Janne Rinne, David Tenenbaum, Patrik Vestin and Harry Lankreijer Number of students: 8 registered students Grade distribution: 1U, 3G, 2 VG. 2 did not take the exam. Evaluation I. Summary of the course eva

https://www.nateko.lu.se/sites/nateko.lu.se/files/2021-02/ngen16_course_evaluation_2019.pdf - 2026-07-25

GISA22 Course evaluation Physical Geography and Ecosystem Science LU 2022 Course Summary for Geographical Information Systems – Advanced Course vt 2022 Course coordinator: Karin Larsson Teachers in the course: Lars Eklundh, Jean-Nicholas Poussart, Mitro Müller, Helena Elvén Eriksson, Micael Runnström, Karin Larsson. Number of students: 100% study tempo 10, and 50% study tempo 29 registered student

https://www.nateko.lu.se/sites/nateko.lu.se/files/2023-03/GISA22%20course%20evaluation%20summary%20Spring%202022%20.pdf - 2026-07-25

Varje år sker företagsöverlåtelser för betydande värden. Företagsförvärv kan skapa stora värden, men det innebär även ett risktagande som kan leda till stora ekonomiska förluster. Ett av flera sätt som parterna kan påverka riskfördelningen mellan varandra är genom garantier. Genom att använda sig av formuleringen ”såvitt säljaren vet”, det vill säga en subjektiv garanti, kan säljaren minska det riEvery year mergers and acquisitions of significant value take place. An acquisition can create a large amount of wealth. However, it also involves taking risks, which can create big economic losses. One of many ways that the involved parties can affect the risk distribution between the parties is by using guarantees. By using the wording ”as far as the seller knows”, i.e. a subjective guarantee, t

The relatively new combustion concept known as partially premixed combustion (PPC) has high efficiency and low emissions. However, there are still challenges when it comes to fully understanding and implementing PPC. Thus a predictive combustion tool was used to gain further insight into the combustion process in late cycle mixing. The modeling tool is a stochastic reactor model (SRM) based on pro

The principal objective for this licentiate thesis is to develop a methodology and evaluation model in order to make the future relative humidity in a screeded concrete slab predictable. Residual moisture in screeded concrete slabs may redistribute to the top screed surface under semi-permeable flooring, thus elevating the relative humidity, RH, and possibly exceed the critical humidity level. Pas

Type Ia Supernovae (SNe Ia) are considered the most reliable standard candles and they have played an invaluable role in cosmology since the discovery of the Universe's accelerated expansion. During the last decades, the SNe Ia samples have been improved in number, redshift coverage, calibration methodology, and systematics treatment. These efforts led to the most recent “Pantheon” (2018) and “Pan

This alphabetical list can be used as a quick guide to the support available to researchers. The list is updated continuously. If something is missing or difficult to find, please contact us at lthin [at] lth [dot] lu [dot] se (lthin[at]lth[dot]lu[dot]se)A B C D E F G H I J K L M N O P Q R S T U V W X Y ZAAerosols one of LTH's profile areas. Aerosols (lth.se) AI and Digitalization one of LTH's pro

https://www.lthin.lth.se/en/research/z-research-support - 2026-07-23

Cancer är en otrevlig sjukdom, som drabbar många människor. Man söker ständigt nya och bättre sätt att bota patienter eller åtminstone lindra sjukdomens framfart. Ett vanligt sätt att behandla cancer är med strålning. Strålningen kan bestå av sk fotoner. Fotoner är samma slags partiklar som t.ex. vanligt ljus. Skillnaden är att de fotoner som används vid strålbehandling av cancer har högre energi "Purpose: The aim of this study was to investigate whether inversely planned intensity modulated radiation therapy (IMRT), using the clinical radiotherapy equipment at hand in our department, renders any advantages regarding dose distribution over conventional radiotherapy for head and neck cancer patients in the ARTSCAN (Accelerated RadioTherapy of Squamous cell Carcinoma in the head And Nec

Wildfires are a major driver of ecosystem development and contributor to carbon emissions in boreal forests. We analyzed the contribution of fires of different fire size classes to the total burned area and suggest a novel fire characteristic, the characteristic fire size, i.e., the fire size class with the highest contribution to the burned area, its relation to bioclimatic conditions, and intra-

2024-06-24 project The motions of nearby stars and the local mass density Alexander Mustill (alexander.mustill@fysik.lu.se) Senior Research Fellow Lund University ESA/ATG medialab NASA/JPL-Caltech/R. Hurt (SSC/Caltech) mailto:alex@astro.lu.se Motions of nearby stars • The dominant bulk motion of stars in the Galaxy is their rotation around the Galactic centre on circular orbits • Stars also have a

https://www.astro.lu.se/sites/astro.lu.se/files/2024-06/2024-06-24%20project_0.pdf - 2026-07-25