Sökresultat

Filtyp

Din sökning på "*" gav 549691 sökträffar

Deep Generative Models for Fast Photon Shower Simulation in ATLAS

The need for large-scale production of highly accurate simulated event samples for the extensive physics programme of the ATLAS experiment at the Large Hadron Collider motivates the development of new simulation techniques. Building on the recent success of deep learning algorithms, variational autoencoders and generative adversarial networks are investigated for modelling the response of the cent

Toward a true Energy Union: Explaining EU external engagement in energy policy

In recent years, the European Union (EU) has increased its external engagement in originally internal policy areas. Despite its growing importance for European integration, there remains a lack of scholarly attention to this trend. Focusing on energy, the following research question is asked: How and why has the EU increased its external engagement in energy policy between 2009–2022? To answer thi

The Polycrisis Epoch in the Ninth European Parliament Term: The Impact of Institutional and Ideological Parameters on Legislative Behavior

Founded in 1952, the European Parliament has progressed through transformational constitutional processes into the primary bearer of democracy within the European Union as its only directly elected institution. As several studies have reported on legislative behavior in previous European Parliament terms, this thesis aims to capture the effects of electoral systems, parliamentary groups’ ideologic

Economic Securitisation within Climate Actions: A thematic discourse analysis of the relation between economic securitisation and environmental actions in the EU’s energy and circularity policies

The EU has faced increasing security threats over the past decade, which have begun to permeate many policy sectors. This has become an essential issue for reducing dependencies on external actors and political constraints, significantly affecting the EU’s relations. Simultaneously, the EU has rolled out more ambitious climate goals, aligning with its intention to become an international sustainab

Continuous Flow Catalytic Reductive Amination of Carbonyl Compounds to Primary Amines with Carbon‐Coated Co@CS Catalyst under Mild Conditions

Reductive amination is crucial for synthesizing amines in pharmaceutical and industry, yet selectively producing primary amines on a large scale remains challenging. This work presents a continuous-flow reductive amination process using benzaldehyde with NH3 and H2 as the nitrogen sources and reductant. A cobalt catalyst supported on nitrogen-doped carbon derived from chitosan (Co@CS) was develope

Captivating bimolecular photoredox dynamics of a ligand-to-metal charge transfer complex

Transition metal complexes featuring ligand-to-metal charge transfer (LMCT) excited states have been identified as promising candidates for driving electron transfer processes. To obtain an efficient system based on photo-induced bimolecular electron transfer, it is required that (1) photo-induced charge separation (CS) is faster than charge recombination (CR) of the separated charges, and (2) CR

Access to kidney transplantation and re-Transplantation from childhood to adulthood : Long-Term data from the ERA Registry

Background and hypothesis Knowledge regarding access to first kidney transplantation (KT) and subsequent KT in patients commencing kidney replacement therapy (KRT) in childhood is limited. Methods Using European Renal Association (ERA) Registry data, we investigated European patients who started KRT below 20 years of age between 1978 and 2019. Access and determinants to first, second, and third KT

M(III) Site-Driven Structural Engineering on Lead-Free Layered Double Perovskite Nanocrystals with Enhanced Photoelectrochemical Activity

Over the past decade, organic–inorganic hybrid perovskites have revolutionized next-generation semiconductors, driving unprecedented advancements in cost-effective optoelectronics. While lead-based perovskite semiconductors exhibit exceptional optoelectronic properties, their inherent toxicity and vulnerability to environmental degradation remain significant barriers to widespread commercializ

Revisiting current distribution and future habitat suitability models for the endemic Malabar Tree Toad (Pedostibes tuberculosus) using citizen science data

Climate change is one of the major drivers of biodiversity loss. Among vertebrates, amphibians are one of the more sensitive groups to climate change due to their unique ecology, habitat requirements, narrow thermal tolerance and relatively limited dispersal abilities. We projected the influence of climate change on an endemic toad, Malabar Tree Toad (Pedostibes tuberculosus; hereafter MTT) from t

Solar drying of mangoes: opportunities for combating vitamin A deficiency in Sub-Saharan Africa

Vitamin A deficiency (VAD) remains a severe health issue in sub-Saharan Africa, causing blindness, illness, and child mortality. In Mozambique, about 69% of children under five are affected, highlighting the short-term impact and donor dependence of supplementation programs. Mangoes (Mangifera indica L.), rich in provitamin A carotenoids, offer a sustainable, food-based strategy to reduce VAD, but

Evaluating removal efficiency in wastewater treatment plants using non-target screening analysis

Micropollutants in wastewater can persist through conventional treatment, threatening ecosystems and human health through toxicity, bioaccumulation, and disruption of biological processes. Limited monitoring, due to cost and methodological challenges, allows these compounds to go undetected, potentially leading to long-term, irreversible impacts. To address this, modern wastewater treatment plants

Emerging frontiers in visual ecology

Visual ecology, the study of how animals acquire and respond to visual information in nature, has grown rapidly over the past few decades. Research in this field has transformed our understanding of fundamental processes, such as the neurobiological basis of behavior and the diversification of species through sensory drive. The recent growth in the field has been accompanied by leaps in our unders

Qualitative observations in university physics laboratories : an example from classical mechanics

One of the key skills of any scientist is noticing what’s going on. Both in the experiment one’s performing and in one’s data: is there something interesting, reason to doubt one’s data or suspect that one’s theoretical description is insufficient? Many experiments developed for undergraduate teaching still focus on quantitative evaluation. Here we take a different approach where careful observati

Non-Fullerene Naphthalene Diimide-Based Electron-Transport Materials for High-Performance and Stable Perovskite Solar Cells

Halide perovskite solar cells (PSCs) have emerged as a transformative photovoltaic technology, achieving unprecedented power conversion efficiencies. However, the development of electron-transport materials (ETMs), particularly organic ETMs, has significantly trailed behind the rapid progress in hole-transport materials (HTMs). Among the organic ETMs, naphthalene diimide (NDI)-based systems stand

Exploring Definitions and Predictors of Severe Asthma Clinical Remission after Biologic Treatment in Adults

Rationale: There is no consensus on criteria to include in an asthma remission definition in real life. Factors associated with achieving remission after biologic initiation remain poorly understood. Objectives: To quantify the proportion of adults with severe asthma achieving multidomain-defined remission after biologic initiation and identify prebiologic characteristics associated with achieving

A calorimeter for analyzing ejected and non-ejected heat during Li-ion battery thermal runaway

Thermal runaway in lithium-ion battery cells poses significant safety risks due to rapid heat generation and potential thermal propagation within a battery system. This study investigates the total heat released and the fraction of energy contained in gas and particles ejected during thermal runaway using a purpose-built calorimeter setup. The results show that the fraction of ejected heat is sign

Complete computational design of high-efficiency Kemp elimination enzymes

Until now, computationally designed enzymes exhibited low catalytic rates1, 2, 3, 4–5 and required intensive experimental optimization to reach activity levels observed in comparable natural enzymes5, 6, 7, 8–9. These results exposed limitations in design methodology and suggested critical gaps in our understanding of the fundamentals of biocatalysis10,11. We present a fully computational workflow

Sustainable block production in developing countries: A case study in Tanzanian construction industry

Byggnadsblocken som bär framtidens Tanzania I Tanzania och dess grannländer är byggnadsmaterialet sandcrete grunden till mycket av det som byggs när befolkningen ökar kraftigt. Det är billigt, går att tillverka lokalt och kräver inte mer än händer och formar. Ändå rymmer detta enkla block ett större problem. Cementet som behövs är dyrt och klimattungt och bristande kontroller i produktion gör attThis study investigates the potential for sustainable building practices in the sub-Saharan regional context, using small- and medium-scale sandcrete block production in Tanzania as a case study. The research combines a literature review on sustainability challenges in the region with insights from two semi-structured interviews. One with a local practitioner who regularly collaborates with small-

Islet autoantibodies as precision diagnostic tools to characterize heterogeneity in type 1 diabetes: a systematic review

Background: Islet autoantibodies form the foundation for type 1 diabetes (T1D) diagnosis and staging, but heterogeneity exists in T1D development and presentation. We hypothesized that autoantibodies can identify heterogeneity before, at, and after T1D diagnosis, and in response to disease-modifying therapies. Methods: We systematically reviewed PubMed and EMBASE databases (6/14/2022) assessing 10