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An innovative coaxial dual-swirl combustor was developed to address the challenges of combustion instability and NOx emissions inherent to ammonia combustion. The combustor employs an inner swirler supplying a premixed ammonia/air stream and an outer swirler generating a premixed methane/air flame that stabilizes the inner ammonia flame. Combined large-eddy simulations (LES) and planar laser-induc

This thesis is devoted to the study of different aspects of groups acting on rooted trees and their applications.First, we focus on the Hausdorff dimension of groups acting on rooted trees. We develop new tools that lead to the solution of several well-known open problems in the subject due to Abért-Virág, Bartholdi, Grigorchuk, Klopsch and Shalev among others.Secondly, we study many aspects of thThis thesis is devoted to the study of different aspects of groups acting on rooted trees and their applications.First, we focus on the Hausdorff dimension of groups acting on rooted trees. We develop new tools that lead to the solution of several well-known open problems in the subject due to Abért-Virág, Bartholdi, Grigorchuk, Klopsch and Shalev among others.Secondly, we study many aspects of th

Long-distance migrants face numerous challenges during their migration, with the spring migration timing being particularly important, as early arrival at the breeding grounds often enhances breeding success. Both innate and environmental factors influence migration timing in birds, and the earlier arrival of males than females is common among songbirds breeding in temperate zones. The great reed

In the future, buildings need to be energy resilient to tackle the energy crisis. This article introduces a concept for classifying the energy resilience of buildings in extreme cold and warm weather in Finland during blackouts. It presents a techno-economic comparison between an old and a new single-family building integrated with photovoltaic (PV) systems and batteries, analyzing their resilienc

Transient concurrent flame spread over solid surfaces involves multiple interacting physical processes, where simplified modelling with effective parameter identification is still challenging. This study presents a modelling framework that combines scaling-based formulation with Bayesian parameter inference to quantitatively capture the transient behaviors of concurrent flame spread. Experimental

We call on the government to exert maximum pressure on the Islamic regime, shut down regime-affiliated activities in Sweden, and recognize Crown Prince Reza Pahlavi as the only democratic alternative for Iran, write 157 Swedes and Swedish-Iranians.

Utility-scale solar parks are expanding rapidly in Sweden, yet without a nationally articulated strategic vision for solar power. As a result, coordination challenges emerge across technical–material, ecological–spatial, and institutional–procedural domains, with implications for how solar generation is integrated into regional and urban energy systems. This study examines how actors navigate this

What if – All Saints as cathedral in LundEssay about a capital probably from All Saints monastery in Lund, now in the Metropolis exhibition at the Cultural Museum. It was found in 1930 in Sandgatan outside the Old Bishop's House. Imagine if it is from the monastery church of All Saints nearby, then the missing basilica could have been from the middle of the 11th century, like Dalby church, where a

Background: Motion sickness (MS) is a common complaint during most modes of travel. Several medications can be used to treat MS but are often accompanied by side-effects. Objective: To assess whether performing the Valsalva manoeuvre can influence the subjective feeling of MS in healthy individuals. Methods: We included 16 healthy participants (4 female) that underwent two sessions of MS induction

Increasing frequency and intensity of droughts threaten grassland ecosystems. Semi-natural grasslands vary in age from ancient to younger sites established on former arable land. While species richness and composition are known to affect drought resilience, little is known about how grassland age shapes drought responses through eco-evolutionary processes at the plant population level. We explored

Since its discovery in 1872, the grave at Öremölla in southern Scania, containing a cremated male with a Roman cauldron and other drinking utensils, has been considered one of the richest graves in Scania from the Roman Iron Age. The cauldron is particularly noteworthy, since it has been modified in an intricate way; the original handle has been removed and replaced with ring handles, and the hand

INTRODUCTION: Sex differences in symptomatic carotid artery stenosis have been reported with conflicting results, with knowledge gaps regarding the degree of carotid stenosis, management and preoperative ischaemic events. This study aimed to determine sex differences in symptomatic carotid artery stenosis prior to undergoing carotid endarterectomy (CEA) or carotid artery stenting (CAS).PATIENTS AN

Over one third of the population develops cancer during their life-time and stroke associated with malignancy accounts for 10% of all hospitalized patients. With and improved survival and better life quality of patients with cancer, cancer related stroke is likely to increase. It is crucial to early diagnose an underlying malignancy to optimize treatment. It is known that a major mechanism is canc

Ion clustering has been proposed as a mechanism leading to the peculiar "anomalous underscreening" phenomenon seen for electrostatic interactions between charged surfaces immersed in concentrated electrolytes. These interactions have been measured using the Surface Force Apparatus, according to which there are strong repulsive interactions between like-charged surfaces, with a range that increases

Strengthening international climate governance is seen as pivotal for advancing the Sustainable Development Goals (SDGs). However, a systematic understanding of their dynamic interactions remains limited. Given the strong interconnections among the SDGs, climate governance policies designed to advance one goal can significantly influence progress on others, highlighting the need for an integrated

This thesis consists of three self-contained papers that examine how information and ideologies serve as coordinating forces during episodes of political and social transformation.The first paper studies how shifts in public sentiment can trigger mass mobilization, using the Finnish Civil War of 1918 as a natural experiment. I show that the abrupt abolition of Russian imperial censorship in 1917 p