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Asymptotic giant branch (AGB) stars are known to produce "cosmic" fluorine, but it is uncertain whether these stars are the main producers of fluorine in the solar neighborhood or if any of the other proposed formation sites, Type II supernovae (SNe II) and/or Wolf-Rayet (W-R) stars, are more important. Recent articles have proposed both AGB stars and SNe II as the dominant sources of fluorine in
In order to treat highly localized excitations in a solid a simple spherical model has been developed. The Coulomb potential from the nucleus at the site of the excitation is treated exactly, while the potentials from the surrounding sites are turned into pseudoion pontentials. Only the spherical average of these potentials is retained and separate self-consistent calculations for the ground state
Combined quantum chemical and molecular mechanics geometry optimisations have been performed on myoglobin without or with O(2) or CO bound to the haem group. The results show that the distal histidine residue is protonated on the N(varepsilon2) atom and forms a hydrogen bond to the haem ligand both in the O(2) and the CO complexes. We have also re-refined the crystal structure of CO-myoglobin by a
Popular Abstract in Swedish Allt levande består till stor del av proteiner. De bygger upp muskler och hår, transporterar syre i blodet och ser till att kemin i kroppen fungerar som den ska. Men hur tillverkas då dessa proteiner? Jo i alla celler finns ribosomer, proteinfabriker. En bakterieribosom är ungefär 0.02 mikrometer stor. Den är sammansatt av proteiner och RNA-kedjor. RNA utgör den funktioTranslation is a central biological process, that is catalysed by a machinery consisting of RNA and protein. In this thesis three different protein components of the bacterial protein synthesis system have been structurally studied. Ribosome recycling factor (RRF) is essential for the recycling step of the translation cycle, elongation factor SelB is a specialised elongation factor needed for co-t
The increasing presence and activities of people in both urban environments and non-urban areas result in the exposure of many wild animal populations to persistent human disturbance. As a response, individuals in disturbed populations often become tolerant towards humans, which can have significant ecological and societal consequences, for example by affecting ecosystem services and human–wildlif
Arabinofuranosidases degrade arabinose-containing oligo and polysaccharides, releasing l-arabinose, which is a potentially useful sugar, shown to reduce glycemic response under certain conditions. Arabinofuranosidases (Arafs) are frequently found in GH43, one of the most common GH-families encoded in genomes in gut microbiota, and hence it is of interest to increase understanding of the function o
Arbetet utgör en stor bit av det pussel som bildar våra liv, därför är arbetets mening en central del i våra liv. En människas självidentitet är nära kopplat till hennes yrke eller en speciell titel. Giddens (1999) visar hur vår definition av självidentiteten i det moderna västerländska samhället, går ifrån att vara traditionsbundet till att kravet på livsval blir för stora och till slut omöjliga
A reliable assessment of the optical properties of atmospheric black carbon is of crucial importance for an accurate estimation of radiative forcing. In this study we investigated the spatio-temporal variability of the mass absorption cross-section (MAC) of atmospheric black carbon, defined as light absorption coefficient (σap) divided by elemental carbon mass concentration (mEC). σap and mEC have
Lately, evidence for early-Holocene emerging sedentism has been suggested among foragers in Northern Europe. The core of this suggested sedentism lies in the increasing dependency on large-scale fishing and mass consumption of fish and a territorial behaviour associated with access to the best fishing locations. This territoriality might also be associated with increasing numbers of people settlin
n the paper three linear aeration controllers that can be easily implemented are presented and evaluated on the activated sludge process pilot plant. Controllers differ according to the information that is used about the process, which can be oxygen in the last aerobic reactor, ammonia in the last aerobic reactor and ammonia in the influent. The aeration controllers that are addressed are: oxygen
Epigenetic mechanisms are implicated in gene regulation and the development of different diseases. The epigenome differs between cell types and has until now only been characterized for a few human tissues. Environmental factors potentially alter the epigenome. Here we describe the genome-wide pattern of DNA methylation in human adipose tissue from 23 healthy men, with a previous low level of phys
The oxygen-atom transfer reaction catalyzed by the mononuclear molybdenum enzyme dimethyl sulfoxide reductase (DMSOR) has attracted considerable attention through both experimental and theoretical studies. We show here that this reaction is more sensitive to details of quantum mechanical calculations than what has previously been appreciated Basis sets of at least triple-zeta quality are needed to
The quantification of species along environmental gradients has long been the subject of study regarding natural plant communities and, more recently, ecosystems disturbed by anthropogenic emissions of eutrophying and acidifying substances. We studied 527 sites in southern Swedish deciduous forests divided into two regions, with mean nitrogen depositions of 17 and 9 kg ha(-1) y(-1). The higher dep
Popular Abstract in Swedish Protein H - ett bakteriellt ytprotein med förmåga att binda till olika proteiner hos människa Bakgrund I vårt dagliga liv omges vi av bakterier av många olika slag. Flertalet av dessa är normalt ofarliga och många utgör den så kallade normalfloran hos människa. En del bakterier kan under vissa förhållanden ge upphov till infektion och sjukdom, men för att åstadkomma dSeveral bacterial species express surface proteins with affinity for the Fc part of human IgG. This thesis describes evolutionary and functional studies of protein H, an IgGFc-binding surface protein of the human pathogen Streptococcus pyogenes. By using peptide mapping and NMR analysis the IgGFc-binding region of protein G, a surface protein of group C and G streptococci, was identified. Various
OBJECTIVE: To assess the effect of lateral episiotomy, compared with no episiotomy, on obstetric anal sphincter injury in nulliparous women requiring vacuum extraction.DESIGN: A multicentre, open label, randomised controlled trial.SETTING: Eight hospitals in Sweden, 2017-23.PARTICIPANTS: 717 nulliparous women with a single live fetus of 34 gestational weeks or more, requiring vacuum extraction wer
Issue management in market-driven software projects is constantly under time pressure. A limited set of developers must share their time between developing features for the next release and resolving reported issues. Project managers need to find the appropriate balance between a high quality product and fast time to market. We study a telecom company in Sweden developing embedded systems for a co
Lägg till titel Sida 1 av 4 November 2023 Litteraturlista – MULE43 Barn och ungdomars lärande och samspel i grupp Almqvist, Jonas., Hamza, Karim., & Olin, Anette. (2017). Undersöka och utveckla undervisning. Professionell utveckling för lärare. (s.155- 171). Studentlitteratur. [16 sidor, se pdf i Canvas]. (Boken finns inläst på LEGIMUS för den som har tillgång till denna resurs) Aspelin, Jonas. (2
https://www.mhm.lu.se/sites/mhm.lu.se/files/2023-12/Litteratur%20BULSIG%20VT24_ny_0.pdf - 2026-05-11
4 June 2015 Sometimes the best way to tackle the big questions is obliquely, and in motion.The Living Archives project celebrates Nordic Open Data Week by inviting you to generate a digital encryption key using your own gestures and movements. Encryption keys are pieces of code used to protect or access data that are usually produced randomly by computers. However randomness is becoming increasing
https://www.iac.lu.se/research/visiting-researchers/susan-kozel-performing-encryption-improvisational-workshop - 2026-05-09
Microsoft PowerPoint - 2016 Project results_JLR EPR and Closing Material Loops LESSONS FROM ENERGY EFFICIENT LIGHTING PRODUCTS Issues with EoL lamps: hazardous waste • Small, light and breakable • Risk from hazardous materials leaching at end of life • Net cost for collection and recycling Issues with EoL lamps: resource efficiency • Energy efficient lamps have small amounts of critical materials
https://www.iiiee.lu.se/sites/iiiee.lu.se/files/richter_epr_lund_10_october_2016.pdf - 2026-05-11
