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Popular Abstract in Swedish Under den senaste tiden har problematiken med klimatförändringarna debatterats livligt. För att kunna förutspå den framtida omfattningen av klimatförändringarna och vilka konsekvenser dessa kommer att ha är det ytterst relevant att känna till utbytet av växthusgaser mellan atmosfär och jordens alla ekosystem. Arktiska ekosystem är ytterst känsliga för den globala uppvärArctic ecosystems play a key role in the terrestrial carbon (C) cycle, but spa-tially explicit data on the C exchange is scarce in these remote areas. The global warming is especially dominant in the Arctic, and these areas are vul-nerable to climate change. It is therefore important to quantify and understand the processes affecting the C dynamics in these regions. In this thesis, the land-atmosp

Background: Uveal melanoma is the most common primary intraocular malignancy in adults. Despite successful control of the primary tumor, metastatic disease will ultimately develop in approximately 50% of patients, with the liver being the most common site for metastases. The median survival for patients with liver metastases is between 6 and 12 months, and no treatment has in randomized trials eve

An experimental investigation was performed to evaluate convective condensation and evaporation of R22, R32 and R410A inside a smooth tube (inner diameter 11.43 mm), a herringbone tube (fin root diameter 11.43 mm) and a newly developed enhanced surface EHT tube (inner diameter 11.5 mm) at low mass fluxes. The inner surface of the EHT tube is enhanced by dimple/protrusion and secondary petal arrays

Scintillation camera images contain a large amount of Poisson noise. We have investigated whether noise can be removed in whole-body bone scans using convolutional neural networks (CNNs) trained with sets of noisy and noiseless images obtained by Monte Carlo simulation. Methods: Three CNNs were generated using 3 different sets of training images: simulated bone scan images, images of a cylindric p

The Paleocene-Eocene Thermal Maximum (PETM, ca. 56 Ma) is marked by a negative carbon isotope excursion (CIE) and increased global temperatures. The CIE is thought to result from the release of 13C-depleted carbon, although the source(s) of carbon and triggers for its release, its rate of release, and the mechanisms by which the Earth system recovered are all debated. Many of the proposed mechanis

The natural products pulchrol and pulchral, isolated from the roots of the Mexican plant Bourreria pulchra, have previously been shown to possess an antiparasitic activity toward Trypanosoma cruzi, Leishmania braziliensis and L. amazonensis, protozoa responsible for the Chagas disease and leishmaniasis. These infections have been classified as neglected diseases, and still require the development

Human dihydroorotate dehydrogenase (DHODH) catalyzes the fourth step of the de novo pyrimidine biosynthesis pathway and uses ubiquinone Q10, a lipophilic molecule located in the inner mitochondrial membrane (IMM), as its co-substrate. DHODH is anchored to the IMM by a single transmembrane helix located at its N-terminus. Nevertheless, how DHODH function is determined by its surrounding membrane en

Popular Abstract in Swedish Metan är en växthusgas med stor potential att påverka klimatet på Jorden. Den vattenmättade miljön i våtmarker erbjuder perfekta livsbetingelser för metanproducerande bakterier och detta medför att naturliga våtmarker är den största enskilda källan till metan i atmosfären, även då man räknar med antropogena utsläpp från, till exempel, förbränning av fossila bränslen. MoThe studies presented in Papers I to VI illustrate several different aspects of the impact of vascular plants on methane emissions from northern natural wetlands. The subject has been approached on different scales, ranging from the study of microbial substrates in the vicinity of a single plant root, to an attempt to extrapolate some of the results to the entire northern hemisphere north of 50°N.

Reliable quantitative vegetation reconstructions for Europe during the Holocene are crucial to improving our understanding of landscape dynamics, making it possible to assess the past effects of environmental variables and land-use change on ecosystems and biodiversity, and mitigating their effects in the future. We present here the most spatially extensive and temporally continuous pollen-based r

Neural stem cells (NSCs) derived from human fetal striatum and transplanted as neurospheres survive in stroke-damaged striatum, migrate from the implantation site, and differentiate into mature neurons. Here, we investigated how various steps of neurogenesis are affected by intrastriatal transplantation of human NSCs at different time points after stroke and with different numbers of cells in each

Nitrogenase is the only enzyme that can cleave the strong triple bond in N2, making nitrogen available for biological life. There are three isozymes of nitrogenase, differing in the composition of the active site, viz., Mo, V, and Fe-nitrogenase. Recently, the first crystal structure of Fe-nitrogenase was presented. We have performed the first combined quantum mechanical and molecular mechanical (

Pedestrians and cyclists are so-called unprotected road users which are sensitive in the context of road safety. When it comes to road safety focus are often placed on pedestrians-cars and cyclist-cars, in this report focus are placed on the road safety between pedestrians and cyclists. Pedestrians and cyclists are often referred to a combined space, with or without a separation. The purpose of th

Surrogatmoderskap innebär att en kvinna bär och föder ett barn med avsikt att lämna över barnet till någon annan. I Sverige är det en otillåten form av assisterad befruktning. Förbudet är dock oreglerat och framkommer endast implicit genom GenL:s begränsade tillämpningsområde. Uppsatsen syftar till att analysera lagstiftarens förbud och argument till förbudet ur ett etiskt perspektiv. ArgumentatioSurrogate motherhood means that a woman carries and delivers a child without the intention of keeping the child. In Sweden, surrogacy is a forbidden form of medically assisted procreation. The prohibition is unregulated, however it emerges because surrogate motherhood falls outside the scope of regulation in GenL. The aim of this essay is to analyze the arguments of the legislator and the prohibit

Speech is an important way of communication all over the world. The speech information is encoded both aural and visual. More than 1.5 billion people have hearing loss and for those the visual information is even more important than for people with normal hearing. Lip reading is therefore an important research topic. In this master thesis, machine learning algorithms were used to identify speech a

Background: One of the preanalytical factors that can affect the results of arterial blood gas (ABG) analysis is the time from sample collection to analysis. A delay in analysis may affect the results due to factors such as ongoing cellular metabolism within the blood sample, gas exchange between the blood sample and the environment, and temperature changes. ABG analysis can be delayed for various

Anton Brandt började som trainee på inköpsavdelningen på Lidl innan han sedan blev strategisk inköpare med fullt ansvar över sortimentet som finns i alla 204 butiker. Kunskaperna från utbildningen använder han i sitt arbete dagligen och värdesätter också den personliga utveckling som tiden på universitet ger. Hur fick du ditt nuvarande jobb? Jag skrev min kandidatuppsats om dagligvaruhandeln och s

https://www.ses.lu.se/utbildning/karriar/tidigare-studenter-fran-utbildningen-berattar/logistik-handlar-till-stor-del-om-att-effektivera - 2026-06-11