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Senior lecturer Contact details Email: mathieu [dot] gisselbrecht [at] fysik [dot] lu [dot] se Phone: +46 46 222 47 22Organisation Synchrotron Radiation Research Visiting address: Sölvegatan 14A, Lund Room number: K445-446 Service point: 14 WebpageMathieu Gisselbrechts profile in Lund University research portalOther affiliations Profile area member Lund Laser Centre, LLC Profile area member LTH Pr
https://www.sljus.lu.se/mathieu-gisselbrecht - 2026-07-12
This thesis conceptually consists of two parts. The fist part---the first half of paper I and papers II--IV---is a study of Jensen measures and their role in pluripotential theory. Lately, there have been a great interest in new methods for constructing plurisubharmonic functions as lower envelopes of disc functionals in the spirit of Poletsky. In this context, Jensen measures of various types pla
We present a study of spectral diagnostics available from optical spectra with R = 17 000 obtained with the VLT/Giraffe HR15n setup, using observations from the Gaia-ESO Survey, on the gamma Vel young cluster, with the purpose of classifying these stars and finding their fundamental parameters. We define several spectroscopic indices, sampling the amplitude of TiO bands, the H alpha line core and
Popular Abstract in Swedish Summary in Swedish Populärvetenskaplig sammanfattning Förhöjt blodtryck, s.k. hypertension, är en folksjukdom i västvärlden och en riskfaktor för hjärtkärlsjukdomar som hjärtinfarkt och stroke (slaganfall). Ca 27 % av den vuxna befolkningen i Sverige beräknas ha hypertension och är lika fördelad mellan män och kvinnor. Salt beräknas bidra till förhöjt blodtryck och kan Abstract The average amount of salt ingested is about 10 grams daily compared to less than one gram in pre-historic life. Salt, althought somewhat debated, is considered a risk factor for elevated blood pressure and end organ damage beyond the blood pressure effect. Thus, salt contributes to the hypertensive phenotype, increase risk of cardiovasvcular disease, deaths and is a great socioeconomic
Interactions between metals and natural organic matter (NOM) are of great environmental importance and one of the key factors influencing hydrolysis, solubility, and speciation of the metals. However, studying geochemically relevant metals like Al, Fe, and Cu is sometimes associated with analytical problems; for example Fe and Cu are both redox active. Gallium (Ga) is a non-redox active metal that
Gas phase reactions at elevated temperatures are versatile tools for material manufacturing and energy conversion. They are of great commercial interest, but they often entail hazardous impacts on the environment. There is consequently a pronounced need for the further develpment of processes utilising these types of reactions. Spectroscopic methods, especially when combined with lasers, are idea
This dissertation has three cornerstones: * Haptics * Human-Computer Interaction (HCI) * Blind Users Haptics deals with controlling human movements and getting feedback through the sense of touch. A haptic interface transmits forces to a person’s hand or fingers in a way that mimics the sensation of touching real objects. Virtual haptic touch can be particularly useful for people with visual i
The Effect of the Nuremberg Laws on impediments of marriage in the Church of Sweden, 1935–1945 From 1935 to the end of the Second World War, the Nuremberg Laws were considered by the clergy of the Church of Sweden in its state function of considering impediments of marriage for German citizens. As a civil authority, the Church of Sweden was responsible for all such decisions until 1991. In the 193
Popular Abstract in Swedish Kroniska bensår utgör en av våra folksjukdomar, där 1% av befolkningen någon gång drabbas. Uppkomsten av sår kan ha en mängd olika orsaker. Den största gruppen är venösa sår, dvs sådana som orsakats av vensjukdom. Behandling av sår har i långa tider betraktats som komplicerad, då såren ofta varit svårläkta och återkommit efter läkning. För den enskilde patienten innebärWound management in primary and community care was investigated throughout a period of 12 years within a well-defined population in one county in Southern Sweden. The estimated prevalence of chronic leg and foot ulcers was 0.19% in 1998 and the mean prevalence was 0.20% during the years 1994-1998. Venous ulcers were the most common (38%) and 7% of the nurses’ workload was devoted to ulcer care. Du
Popular Abstract in Swedish Moderns rökning under graviditet och risk för medfödda missbildningar. Ungefär två procent av alla nyfödda föds med någon missbildning såpass allvarlig att den rapporteras till missbildningsregistret och/eller till det medicinska födelseregistret. Trots alla samhälleliga insatser för att minska rökningen (speciellt i samband med graviditet) så röker (1996) 16% av de grAbout two percent of Swedish newborn infants are born with a significant congenital malformations which is reported to the Swedish Registry of Congenital Malformations (RCM), and/or the Swedish Medical Birth Registry (MBR). In spite of persistent public health recommendations, about 16% of the Swedish pregnant women are smoking during pregnancy (1996). It is well known that maternal smoking during
Popular Abstract in Swedish Sjukdomar associerade till fästingar har ökat över hela världen och näst efter myggor är fästingen den vektor som orsakar mest sjukdom hos människan. I Sverige sprider fästingen sjukdomar såsom borreliainfektion, fästingfeber (erlichia) och fästingburen hjärninflammation (TBE) vilka orsakas av såväl bakterier som virus. Borreliainfektion är den vanligaste fästingburna sThe incidence and variety of diseases associated with ticks have increased world-wide and ticks are currently considered to be second only to mosquitoes as vectors of human infectious diseases in the world. In the northern hemisphere, Ixodes ricinus, the most common tick, transmits diseases caused by several infectious pathogens, including different types of bacteria, virus and protozoa. In Sweden
Popular Abstract in Swedish Händerna utsätts dagligen för olika typer av faror. Handskador av varierande omfattning är därför inte ovanliga. Dessa kan drabba både barn och vuxna, såväl under fritiden som i arbetslivet. Panoramat av handskador har förändrats. För omkring 40 år sedan var handskador vanligt förekommande på arbetsplatsen, men har sedan dess minskat så att de för 20 år sedan utgjorde uHand injuries have a profound impact not only on the patient’s activity of daily living and during leisure time but also on working capability. Such injuries may therefore also generate substantial costs for society in terms of sick-leave and treatment. In the present thesis, the panorama, costs (within the health-care system, due to lost production and total costs), outcome and health status of p
This thesis consists of four empirical essays, all dealing with return volatility of financial assets and/or time-varying risk premia. In the first essay, Changing Risk Premia: Evidence from a Small Open Economy, the relation between risk and return is investigated for Swedish stocks. Little is known about the differences in the risk-return relationship in large economies compared with smaller, l
Popular Abstract in Swedish Avhandlingen behandlar barns flyttningar hemifrån i det förindustriella bondesamhället. Utöver att studera när barn lämnade hemmet kopplas också flyttningsprocessen till den förindustriella hushållsekonomins funktionssätt. Analysen görs på ett longitudinellt material för ett område i västra Skåne under perioden 1829-1866. Individerna följs från födseln, eller från det aThis study deals with the process of children leaving home and its interactions with the household economy in preindustrial society. A theoretical model of leaving home is outlined and then analyzed multivariately, using a longitudinal micro-level dataset for a sample of parishes in western Scania, Sweden, for the period 1829-1866. In a first introductory part the social and economic background as
Adherence to lifestyle modification and pharmacological treatment is of great importance in order to achieve maximum benefits of preventive measures after a cardiac event. Unfortunately, patients are neither adopting adequate lifestyle changes nor do they adhere to prescribed medication. Consequently, implementation of CHD guidelines is less than optimal in clinical practice. The general aim of th
This thesis concerns nozzles and their impact on droplet formation and droplet flight in a continuous ink jet printer. Methods are suggested to characterise droplet formation and droplet flight stability (D.F.S.). A study about the influence of droplet flight stability on the quality of print out is presented. A method to assess the charging process for the continuous ink jet is described. The dev
Popular Abstract in Swedish Akut mellanöreinflammation (akut otitis media, AOM) är en av barnaålderns vanligaste sjukdomare och en av dem som oftast föranleder antibiotikabehandling. De flesta barn får bara någon enstaka AOM, men cirka 5% av dem som insjuknar drabbas sedan av upprepade infektioner (s.k. otit-benägna barn) och blir till ett problem både för patienten, dennes familj och samhället. DAcute otitis media (AOM) is one of the most common childhood diseases and the most common causes of antibiotic treatment in small children. Most children will experience one or two episodes of AOM during preschool age but some will suffer from repeated attacks, they will become otitis-prone. Complications with severe, sometimes fatal infections such as acute mastoiditis and meningitis are nowadays
'If you read only one book on the English language-read this one. English - One Tongue, Many Voices covers all aspects of the English language: its global spread, international and local varieties, history from obscurity to primacy, usage and uses, standards and creoles, style and change in progress, politics and controversy. The scope of the book is vast, its depth impressive, and its balance adm
Companies share their intellectual property with potential competitors in many different ways, including patent pooling. A patent pool is an agreement between two or more patent owners to license one or more of their patents to one another or to third parties. In Europe the Commission used the term patent pool as the bringing together of the patents of two companies, which makes it available for u
