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Popular Abstract in Swedish POPULÄRVETENSKAPLIG SAMMANFATTNING Halsbränna och sura uppstötningar är vanliga åkommor i den svenska befolkningen där upp till 20 procent av de tillfrågade uppger sig ha besvär av dessa symtom varje vecka. Både halsbränna och sura uppstötningar anses vara symtom på att magsäcksinnehåll flödar tillbaka upp genom övre magmunnen till matstrupen sk gastroesofageal refluxThis thesis investigates several aspects on gastroesophageal reflux disease (GERD) and associated complications as Barrett’s esophagus and esophageal adenocarcinoma. I. To clarify the natural course of GERD, a pH-metry verified cohort was re-evaluated after 20 years. The course of GERD may well be progressive. A statement based on the evidence that reflux induced complications as esophagitis and

We present a search for excited neutrinos using e(-) p data taken by the H1 experiment at HERA at a center-of-mass energy of 318 GeV with an integrated luminosity of 15 pb(-1). No evidence for excited neutrino production is found. Mass dependent exclusion limits are determined for the ratio of the coupling to the compositeness scale, f/Lambda, independently of the relative couplings to the SU(2) a

Dijet events in photon-proton collisions in which there is a large pseudorapidity separation, Deltaeta > 2.5 between the two highest E-T jets are studied with the H1 detector at HERA. The inclusive dijet cross sections are measured as functions of the longitudinal momentum fractions of the proton and photon which participate in the production of the jets, x(p)(jets) and x(gamma)(jets) respectively

Cross sections for the production of two isolated muons up to high di-muon masses are measured in ep collisions at HERA with the H1 detector in a data sample corresponding to an integrated luminosity of 71 pb(-1) at a centre of mass energy of roots = 319 GeV. The results are in good agreement with Standard Model predictions, the dominant process being photon-photon interactions. Additional muons o

The diffractive photoproduction of J/psi mesons is measured with the HI detector at the ep collider HERA using an integrated luminosity of 78 pb(-1). The differential cross section dsigma(gammap --> J/psiY)/dt is studied in the range 2 < < 30 GeV2, where t is the square of the four-momentum transferred at the proton vertex. The cross section is also presented as a function of the photon-proton c

The helicity structure of the diffractive electroproduction of rho mesons, e + p --> e + rho + Y, is studied in a previously unexplored region of large four-momentum transfer squared at the proton vertex, t: 0 < t' < 3 GeV2, where t' = - min. The data used are collected with the HI detector at HERA in the kinematic domain 2.5 < Q(2) < 60 GeV2, 40 < W < 120 GeV No t dependence of the r(00)(04)

Deep-inelastic scattering data in the range 150 < Q(2) < 35000 GeV2 are used to investigate the minimum jet separation necessary to allow accurate description of the rate of dijet production using next-to-leading order perturbative QCD calculations. The required jet separation is found to be small, allowing about 1/3 of DIS data to be classified as dijet, as opposed to approximately 1/10 with more

Dijet cross sections as functions of several jet observables are measured in photoproduction using the HI detector at HERA. The data sample comprises e(+)p data with an integrated luminosity of 319 pb(-1). Jets are selected using the inclusive k(perpendicular to) algorithm with a minimum transverse energy of 25 GeV for the leading jet. The phase space covers longitudinal proton momentum fraction x

Background Previous population-based studies suggest an increased risk of suicide in Parkinson’s disease (PD), but findings have been inconsistent and often limited by residual confounding. We examined the association between incident PD and suicide-related outcomes using extensive confounding control, including both suicidal attempts and suicide.Methods We conducted a nationwide matched cohort stBackground Previous population-based studies suggest an increased risk of suicide in Parkinson’s disease (PD), but findings have been inconsistent and often limited by residual confounding. We examined the association between incident PD and suicide-related outcomes using extensive confounding control, including both suicidal attempts and suicide.Methods We conducted a nationwide matched cohort st

Den 1 januari 2002 bildades myndigheten "Nationellt centrum för flexibelt lärande" i Hässleholm. Myndighetens bildande innebar att flexibelt lärande på allvar etablerades som ett begrepp inom den svenska pedagogiska diskussionen. Syftet med uppsatsen är att studera innebörden av begreppet och undersöka hur begreppet etablerades. Arbetet med att undersöka hur begreppet etablerades ledde

Sweden has during the past decades experienced increasing challenges in suburban, segregated areas: the inhabitants have different cultural and socio-economic backgrounds but despite that, face similar problems. Many inhabitants lack relevant networks as well as other opportunities to become a part of the society. These inhabitants claim they don´t have the “keys” to understand their society and iSweden has during the past decades experienced increasing challenges in suburban, segregated areas: the inhabitants have different cultural and socio-economic backgrounds but despite that, face similar problems. Many inhabitants lack relevant networks as well as other opportunities to become a part of the society. These inhabitants claim they don´t have the “keys” to understand their society and i

Fan engagement on social media platforms presents significant challenges for digital preservation due to their dynamic and evolving character, spurred by the platforms’ data-generative and algorithmic features, as well as commercial logic. These characteristics pose problems when capturing information about the context of fan engagement. Context sheds light on the environment, setting or circumstaFan engagement on social media platforms presents significant challenges for digital preservation due to their dynamic and evolving character, spurred by the platforms’ data-generative and algorithmic features, as well as commercial logic. These characteristics pose problems when capturing information about the context of fan engagement. Context sheds light on the environment, setting or circumsta

Introduction/Background: Measurement of umbilical cord blood gasesat birth is the gold standard of capturing the metabolic state of the newborn. Dual sampling of umbilical cord vessels is mandatory, yet the longterm predictive value of venoarterial differences, ΔpH, remain undetermined. Previously, large ΔpH showed a protective effect against adverseneonatal outcomes.Objectives: To investigate the

The Commentator is a small-scale computer implementation of a model oftext production. The system simulates human behavior from the perceptionof events on a screen to the utterances. It is designed to allow anyone havingsome knowledge of Basic and access to a microcomputer to study the semantics of words (e.g. localization and movement predicates such asapproach, left/right, near, in front of, tur

Due to restrictions following the Covid-19 pandemic,major changes regarding teaching have been called for. Sincestudents’ presence in lab classrooms has been very restricted alsophysical labs have had to be transformed into e.g. simulationsperformed at home or via remote connections. After lifting of therestrictions, hybrid learning where both physical and simulatedlab environment are combined hav

IntroductionThis study is part of an international collaboration that investigates teachers’ attitudes and responses to vignettes depicting school bullying situations. As per Bandura's model of reciprocal determination, attitudes and behavior in these situations can be influenced by individual and contextual factors. This study specifically examines several factors related to teachers ‘professio

I denna uppsats presenteras resultaten av ett kandidatarbete i geologi som gjordes i samband med studier vid Lunds universitet 2016. Syftet med arbetet har varit att göra en tolkning av miljö och klimat i ett område vid ön Anholt i södra Kattegatt under en period i Bölling-Alleröd ca 14 600-13 700 år sedan. Genom att studera skalen hos fossila bottenlevande foraminiferer har vi funnit belägg för a

Stora mängder koldioxidutsläpp från stora infrastrukturprojekt är en av de mest angelägna utmaningarna inom dagens bygg- och anläggningsbransch, där klimatbelastande material ofta används i stora mängder. Markstabilisering är en beprövad teknik för att förbättra bärigheten hos svaga jordar och erbjuder både tids- och kostnadseffektiva lösningar. Trots dess fördelar är metoden förknippad med betydaLarge-scale carbon dioxide emissions from major infrastructure projects constitute one of the most pressing challenges within the contemporary construction and civil engineering sector, where climate-intensive materials are often used in considerable quantities. Soil stabilization is a proven technique for enhancing the bearing capacity of weak soils and offers both time- and cost-effective soluti

This master thesis investigates the potential and limitations of local electricity sharing in residential distribution networks by analysing the correlation between local photovoltaic (PV) generation and electricity consumption in existing rural low-voltage grids. The study is based on quarter-hour resolution measurement data from 2025 provided by E.ON, including consumption and production data fr