Sökresultat

Filtyp

Din sökning på "*" gav 535054 sökträffar

Towards a setup for narrowband terahertz generation through difference-frequency mixing of chirped ultrashort pulses

Terahertz radiation is a useful tool for inducing lower-energy excitations in matter, where it can be used to cause structural changes through direct interaction with the crystal lattice. Sub-picosecond optical pulses can be used to generate intense broadband terahertz pulses through optical rectification in nonlinear crystals, reaching peak electric fields of several MV/m and conversion efficienc

Structural and functional analysis of aquaporin-2 mutants involved in nephrogenic diabetes insipidus

Aquaporins are water channels found in the cell membrane, where they allow the passage of water molecules in and out of the cells. In the kidney collecting duct, arginine vasopressin-dependent trafficking of aquaporin-2 (AQP2) fine-tunes reabsorption of water from pre-urine, allowing precise regulation of the final urine volume. Point mutations in the gene for AQP2 may disturb this process and lea

Large eddy simulation of spray and combustion characteristics of biodiesel and biodiesel/butanol blend fuels in internal combustion engines

Biofuel is a crucial renewable and environmentally friendly energy source for addressing greenhouse gas emissions and other energy-related issues. Biodiesel and butanol, among alternative biofuels, possess complementary physical and chemical properties, offering multiple possibilities for their use in existing internal combustion engines. However, biodiesel's distinctly different physical and comb

From Vacant to Vibrant: Transforming Tolka quay through meanwhile use

This thesis explores the concept of “meanwhile use” in the context of the Tolka Quay area of Dublin. The project proposes a temporary use of the underutilized space to activate it and contribute to the area’s long-term development. Through five phases of design, which are Connection, Landscape, Zoning, Building, and Future, the project aims to create a vibrant and sustainable community hub in Tolk

Sex-specific differences and similarities of olanzapine and risperidone on avoidance suppression in rats in the conditioned avoidance response test

It is well known that antipsychotic drugs (APDs) are more effective in reducing symptoms in women than in men, and that women are more sensitive to the side effects of APDs. Therefore, it is of great importance that sex differences in drug responses are considered already in the early stages of drug development. In this study, we investigated whether sex-specific differences could be observed in r

Lokal och hållbar mat i skånska kommuner - Strävan efter närproducerat och relationen till andra hållbarhetsmål

Hur kan Skånes kommuner servera mer närproducerad mat, och göra det hållbart? Det vanligaste hållbarhetsmålet när det kommer till kommunala måltider i Skåne är att öka andelen närproducerad mat, visar denna studie genom en genomgång av policyer. Det är dock inte helt enkelt för kommuner att köpa in närproducerad mat. Det är inte heller självklart att närproducerad mat är hållbar. Detta är fenomeFood production is a major driver of climate change and environmental degradation. There is a political will to use public procurement as a strategic tool to promote more sustainable practices in the food industry. There are many aspects of sustainable food consumption, and one aspect that is getting increased attention is locally produced food. This study aims to examine how municipalities in the

Fire extinguishment tests of electric vehicles in an open sided enclosure

Electric vehicles may represent a new type of risk and require a change in fire protection and firefighting techniques in vehicle carriers and parking garages. This study presents an experimental assessment of firefighting techniques and fire dynamics of electric cars in an open-sided enclosure. The enclosure had dimensions of 12.2 m by 7.1 m, and openings of 7.1 m by 2.4 m on either end of the en

Fracture behaviour of acetylated wood : Material characterisation and dowel-type connections

In order to increase the competitiveness of timber as a building material in outdoor applications, durability and dimensional stability must be ensured. Acetylation enables an environmentally friendly way to increase both durability and dimensional stability of wood, without introducing harmful substances to the environment. The focus of the present research is to examine the possibility of adding

Hard X-ray stereographic microscopy for single-shot differential phase imaging

The characterisation of fast phenomena at the microscopic scale is required for the understanding of catastrophic responses of materials to loads and shocks, the processing of materials by optical or mechanical means, the processes involved in many key technologies such as additive manufacturing and microfluidics, and the mixing of fuels in combustion. Such processes are usually stochastic in natu

Inequality, poverty, and resilience to economic shrinking

With the recognition that generating economic growth is not the same as sustaining it, the challenge to catch-up and growth literature is discerning between these processes. Recent research suggests that the decline in the frequency of “shrinking” episodes is more important for long-term development than higher growth rates. By using a framework centred around social capabilities, this study aims

How Little is Enough? Porous and embracing dramaturgy for transformative encounters

The article gives an insight into the dramaturgical tools that are applied in the site specific and participatory performance Island, that was performed in Hrísey, an island north off the coast of Iceland in 2020. The project is a part of the artistic PhD research How Little is Enough? Sustainable Methods of Performance for Transformative Encounters, at Malmö Theatre Academy, University of Lund, t

Citrullination of C1-inhibitor as a mechanism of impaired complement regulation in rheumatoid arthritis

Background: Dysregulated complement activation, increased protein citrullination, and production of autoantibodies against citrullinated proteins are hallmarks of rheumatoid arthritis (RA). Citrullination is induced by immune cell-derived peptidyl-Arg deiminases (PADs), which are overactivated in the inflamed synovium. We characterized the effect of PAD2- and PAD4-induced citrullination on the abi

An online self-guided cognitive intervention for unwanted intrusive thoughts about harming infants in new parents : initial randomised controlled trial with mediation analysis

Approximately one-fifth of new parents struggle with unwanted intrusive thoughts (UITs) about intentionally harming their child. This study evaluated the initial efficacy, feasibility and acceptability of a novel online self-guided cognitive intervention for new parents with distressing UITs. Self-recruited parents (N = 43, 93% female, age 23–43 years) of children 0–3 years reporting daily distres

Pseudomonas aeruginosa gene expression analysis using pangenome and PAO1 reference genomes

Development in sequencing technologies has made the analyses of genetic material much more accessible. Processing sequenced data for an accurate analysis comes with its challenges, especially with the studies in microbial in clinical in vivo samples where difficulties in the collection of these samples for sequencing could lower the quality and contamination from the human host which might affect

Detecting and Mitigating Actuator Attacks on Cloud Control Systems through Digital Twins

Recently, the industry has been driven to move industrial control systems to the cloud due to the significant advantages it offers in terms of storage and computing resources. However, this shift also brings forth significant security challenges. By moving control systems to the cloud, the potential for attackers to infiltrate the system and launch damaging attacks increases. These attacks can res

Soil carbon storage capacity of drylands under altered fire regimes

The determinants of fire-driven changes in soil organic carbon (SOC) across broad environmental gradients remains unclear, especially in global drylands. Here we combined datasets and field sampling of fire-manipulation experiments to evaluate where and why fire changes SOC and compared our statistical model to simulations from ecosystem models. Drier ecosystems experienced larger relative changes

BEM to BIM in the early design phase: A comparison between static and dynamic heating energy predictions

Due to climate change and increasing pressures on resources, the demand for more energy-efficient buildings is increasing globally. Building information modeling (BIM) and building energy modeling (BEM) are two essential tools to make the necessary transition to net-zero energy buildings (NZEB). This article presents two case studies aiming to automate information from the BIM model to predict ann