This thesis focuses on various aspects in terahertz quantum cascade lasers such as high temperature performances, electrical instabilities and chaos. In the first part of the thesis, an introduction to the topic and the non equilibrium Green's function package applied is given with particular emphasise on the inhomogeneous domain model and the chaos theory. In addition, new results regarding the h

Background: Gambling disorder (GD) is a behavioural addiction in which a person faces negative consequences due to uncontrolled gambling, such as financial, personal, or relational difficulties. GD more often affects men but both men and women face severe consequences of GD. Psychiatric comorbidity is the rule rather than the exception and suicidality is abundant. Health issues such as obesity and

ContextUp to half of patients with adrenal adenomas found as incidentalomas show biochemical signs of subtle cortisol hypersecretion without having clinical signs or symptoms of Cushing’s syndrome. A condition called autonomous cortisol secretion (ACS). Previous studies have indicated that ACS might be associated with increased mortality.ObjectivesExplore if ACS is an independent risk factor for i

Prydlig, proper och välskött - så tycks den perfekta trädgården se ut. Men när den kortklippta gräsmattan växte fram som ideal bland Europas välbärgade var övriga naturen vildare. I en tid av artutrotning och klimatförändringar finns det större behov än någonsin av otjämjda trädgårdar, skrive råtta forskare och landskapsarkitekter.In an era of species extinction and climate change, we should abandon the well-trimmed lawn and let gardens grow wilder, writes Anna Persson and other researchers and landscape architects on DN Debatt.

It is often a challenge for a child to communicate their pain, and their possibilities to do so should be strengthened in healthcare settings. Digital self-assessment provides a potential solution for person-centered care in pain management and promotes child participation when a child is ill. A child's perception of pain assessment differs when it is assessed using digital or analog formats. As w

When installing new research equipment at the synchrotron research laboratory MAX IV, a final positional accuracy of tens of microns is usually needed. To obtain that accuracy, initial reference points must be placed within 2 mm from the nominal target points in CAD, in a process referred to as bluelining. It is currently a manual process where points from a virtual environment are transferred to

Shakespeare's Hamlet has been retold in children's versions several times in Sweden in recent years. It was the subject of the first episode of the children's television programme På teatern [At the Theatre], written and directed by Christina Nilsson for SVT in 2001–2002, where Shakespearean actors meet their child or grandchild backstage after a performance to tell and partly enact the story of t

Gustav Möller (1884-1970) var Sveriges socialminister under en korttid kring mitten av 1920-talet samt mellan åren 1932 och 1951 medett par kortare avbrott. Han var folkhemmets ”arkitekt” eller ”Socialsverigesskapare” som förre statsministern Tage Erlander uttryckte det.Möller var en kraftfull socialminister med en tydlig ideologi. Vägledandeprinciper för Möller var bland annat att socialpolitiken

Background: A neuroinflammatory response that may lead to edema and secondary brain damage is elicited in severe traumatic brain injury (TBI). Previous studies using microdialysis (MD) membranes with 100 k Dalton (kDa) cut-off found a transient intracerebral release of cytokines and chemokines without significant correlations to clinical course, intracranial pressure (ICP) or metabolites. In this

Objective: This study aimed to evaluate the 9-month cost and health-related quality of life (HRQOL) outcomes of resistance versus viral load testing strategies to manage virological failure in low-middle income countries. Methods: We analyzed secondary outcomes from the REVAMP clinical trial: a pragmatic, open label, parallel-arm randomized trial investigating resistance versus viral load testing

Due to their potential environmental risk, the abatement of organic micropollutants from wastewater has gained increasing attention in recent years. This thesis evaluates the use of ozone in Swedish wastewater treatment plants (WWTPs) and the incentives for full-scale implementation of organic micropollutant removal.This work is divided into two sections: the first segment comprises quantitative rDue to their potential environmental risk, the abatement of organic micropollutants from wastewater has gained increasing attention in recent years. This thesis evaluates the use of ozone in Swedish wastewater treatment plants (WWTPs) and the incentives for full-scale implementation of organic micropollutant removal.This work is divided into two sections: the first segment comprises quantitative r

INTRODUCTION: Decreased dopaminergic activity - as reflected by lower levels of the major metabolite homovanillic acid (HVA) in cerebrospinal fluid (CSF) - may be involved in the pathophysiology of attempted suicide. An inverse association has also been found between dopaminergic activity and clinical symptoms of depression and anxiety in non-suicidal individuals. The aim of this study was to asse

Background: In the strive towards a circular economy, metal waste recycling is a growing industry. During the recycling process, particulate matter containing toxic and allergenic metals will be emitted to the air causing unintentional exposure to humans and environment. Objective: In this study detailed characterization of particle emissions and workplace exposures were performed, covering the fu

Aim: Children born extremely preterm frequently have developmental coordination disorder (DCD). We aimed to evaluate perinatal risk factors for DCD. Methods: Swedish national cohort study including 226 children born before 27 gestational weeks without major neurodevelopmental disabilities at 6.5 years. Outcome was DCD, defined as ≤5th percentile on the Movement Assessment Battery for Children-Seco

Allergen specific immunotherapy (AIT) is the only causal therapeutic option for allergic airway diseases including asthma and allergic rhinitis. AIT has been shown to restore the allergen immune tolerance, can modify both the early and late-onset allergen-specific airway hyperreactivity, helps to achieve disease control/remission and prevents new sensitisations. Recent real life data on long-term

Despite the passing in 2015 of UNSCR 2250 on Youth, Peace, and Security, the study of young people’s political agency in conflict, and the possibilities for empowerment and transformative change, remains sparse. This article investigates generative processes of youth political agency in the Syrian war since 2011 and under what conditions conflict has politically empowered/disempowered youth. Drawi

For the first time in the latest Assessment Report of the Intergovernmental Panel on Climate Change (IPCC), water has been the focus of dedicated chapters in both Working Group 1 (Chapter 8) and 2 (Chapter 4). Nevertheless, we argue here that water has not yet received the full attention it deserves from both scientists and policymakers for several reasons. Firstly, the historical focus on tempera