Sökresultat

Filtyp

Din sökning på "*" gav 559458 sökträffar

Mobiliteshubbar: Ett verktyg för attraktiv stadsutveckling i Sölvesborgs kommun

Den här rapporten undersöker hur Sölvesborgs kommun kan stärka hållbar mobilitet och samtidigt använda centrala ytor mer effektivt genom att etablera mobilitetshubbar. En mobilitetshubb kan beskrivas som en samlad nod där flera färdmedel och tjänster möts: cykelparkering, laddning, bilpool, lånecyklar, information, bokning och möjligheter att byta mellan gång, cykel, buss och tåg. I stället för at

Proton Nuclear Magnetic Resonance Relaxation in Aqueous Sugar Solutions : Can Low-Field Nuclear Magnetic Resonance Relaxation Measurements Differentiate between “Bound” and “Free” Water?

Understanding water interactions in complex systems is crucial, as they play a key role in fields such as biochemistry, pharmaceutical formulations, and food science. Nuclear magnetic resonance (NMR) relaxation measurements have become one of the widely used methods to visualize various water characteristics owing to their noninvasive nature and ease of use. However, unambiguous data interpretatio

Periodic Inversion Domains on Step-Flow Surfaces of N-Polar GaN Grown on m-Plane Offcut 4H-SiC(0001̅)

Understanding the atomic-scale interfaces in advanced semiconductor heterostructures is essential for controlling defects, optimizing material properties, and ensuring device reliability. In this work, we present a comprehensive study of the atomic structure at Al(Ga)N interfaces in N-polar GaN high-electron-mobility transistor structures (HEMTs) via aberration-corrected annular dark field scannin

Cambodia bets big on state-led development

Cambodia’s opening of Techo International Airport and the consolidation of the Bakong digital payment system signal a shift towards a more state-led and financially sophisticated development model. These initiatives reflect the Cambodian state’s expanding role in planning, financing and governing large-scale infrastructure and digital systems, deepening direct participation in development. While d

COMP–PMEPA1 axis promotes epithelial-to-mesenchymal transition in breast cancer cells

Epithelial-to-mesenchymal transition (EMT), driven by cues from the tumor microenvironment, is a critical initiator of metastatic progression. In breast cancer patients, elevated expression of cartilage oligomeric matrix protein (COMP) is associated with shorter survival and increased metastatic risk. Here, we investigated the role of COMP in regulating EMT in breast cancer. Breast cancer cells tr

Increased intracranial pressure in severe traumatic axonal injury patients - A retrospective single-center study

Introduction: Traumatic axonal injury (TAI), often caused by rapid rotational forces and high-energy accidents, is common in severe traumatic brain injury (sTBI). The intracranial pressure (ICP) dynamics are often unpredictable, and the need for ICP monitoring remains debated. Research question: What is the incidence of ICP elevation in patients with TAI, and how often is escalated ICP-lowering tr

Mercury stocks and methylmercury production remain unaffected by 17 years of experimental permafrost thaw

Mercury (Hg) has been stored in permafrost peatlands for millennia. As permafrost thaw is predicted to increase with ongoing climate warming, Hg is at risk to be remobilized from those peatlands and hotspots for Hg methylation could potentially form. Monomethylmercury (MeHg) is a known neurotoxin and a health concern to northern communities if Hg is remobilized, transformed to MeHg and subsequentl

Determination of main compound classes in shea butter using size exclusion chromatography and refractive index detection

Introduction: Shea butter is a kernel derived fat which includes several classes of compounds including lipids like tri- and diacylglycerols as well as unsaponifiable components. Background: Accurate determination of the compound class composition of shea butter is important for industry to quantify the levels of wanted compounds. Size exclusion chromatography (SEC) coupled with refractive index

Prediktion av massflöden vid förbehandling av substratblandningar före samrötning

Biogas är ett förnybart bränsle som tillverkas genom att organiskt avfall bryts ner utan syre. På St1 Biokrafts anläggning i Södertörn används avfall som matrester, gödsel och slakteriavfall för att producera biogas och biogödsel. Innan det organiska materialet förvandlas till biogas genom rötning kan avfallet förbehandlas för att påskynda processen och för att producera en rötrest som kan användaBiogas production plays an important role in the transition toward renewable energy systems by converting organic waste into methane and nutrient-rich biofertilizer. This study developed two process models to describe and predict the behaviour of the pre-treatment facility at St1 Biokraft’s biogas plant in Södertörn, Sweden. An annual model was constructed to reproduce the mass balance of input ma

Evaluating lignin-based Activated Carbon using PFAS-contaminated water from Korsør

Ett nytt aktivt kol har framställts från restprodukter inom pappersindustrin. Men är det tillräckligt effektivt för att motverka spridningen av PFAS? PFAS är en grupp skadliga kemikalier som utvecklades under förra århundradet och som fortfarande sprids i miljön, där de blir allt vanligare. Spridningen motverkas idag på flera sätt: genom förbud, genom att alternativa kemikalier tas fram och genom This study evaluated the performance of a new lignin-based activated carbon (AC) for the removal of per- and polyfluoroalkyl substances (PFAS) from contaminated groundwater from Korsør, Denmark. Preliminary tests using 14C-labeled PFOA and scintillation counting were conducted to compare adsorption capacities of three lignin-based AC variants and a commercial AC (Norit BAE Super), guiding the sele

Exploring optimal expression conditions for low-degraded and low chaperone-contaminated recombinant silk protein

Spider silk is a highly attractive biomaterial with exceptional strength and versatility, offering potential applications across numerous industries. However, large-scale production remains a significant challenge. Harvesting silk directly from spiders has proven impractical, making recombinant protein production a promising alternative. Spider silk has been studied at Lund University for several

Epidemiology beyond averages : Reflections on civic responsibility and contextually structured individual heterogeneity

Epidemiology has achieved substantial methodological refinement in recent decades, yet its social resonance has not always kept pace. This essay reflects on tendencies within influential sectors of the field toward methodological sophistication that, while yielding genuine intellectual advances, can unintentionally distance epidemiology from its civic and historical roots. By privileging what is a

From Averages to Heterogeneity : A Plain-Language Guide to MAIHDA in Epidemiology

Many studies compare health averages between groups such as neighbourhoods or social categories. Averages are simple but can be misleading, since individuals within the same group often differ widely. We present MAIHDA (Multilevel Analysis of Individual Heterogeneity and Discriminatory Accuracy) as a general framework to study how context structures health differences. MAIHDA is not a new statisti

Multiexciton absorption cross sections of CdSe@CdS nanorods studied using pump–repump–probe spectroscopy

While the multiexciton dynamics in semiconductor nanocrystals is widely explored, to determine the absorption cross sections for multiexcitons of varying order is still a challenge. In this study, we performed pump–repump–probe transient absorption (ppp-TA) spectroscopic measurements on CdSe@CdS nanorods to gain insights into the absorption cross sections for multiexcitons. By tuning the pump–repu

Targeted innate immune inhibition therapy compared with antibiotics for recurrent acute cystitis : a randomized, open-label phase 2 trial

Cystitis is a bacterial infection of the bladder that occurs in about half of women at least once in their lifetime. Antibiotics such as nitrofurantoin are used to treat cystitis, but antibiotic resistance is a concern, especially for recurrent infections. Here we report an open-label, randomized, single-centre, phase 2 study to analyse the acute and long-term safety and efficacy of the IL-1 recep

Urinary tract infection during pregnancy and time relation to preterm birth—a Swedish observational study

Introduction: It is well known that urinary tract infection (UTI) during pregnancy is associated with preterm birth, but information about the risk of preterm birth depending on gestational week of infection is sparingly described in the literature. Material and Methods: An observational study based on data from Swedish registers including women giving birth 2014–2020 (n = 684 595). Pregnant women

Proteomic Profile in Retinopathy of Prematurity : A Secondary Analysis of the Mega Donna Mega Randomized Clinical Trial

Importance Identifying early proteomic profiles in infants who develop severe retinopathy of prematurity (ROP) may reveal targets for preventive interventions to reduce retinal vessel loss and the subsequent risk of severe ROP. Objective To assess early longitudinal profiles of blood protein levels in preterm infants with or without severe ROP and the effect of arachidonic acid (AA) and docosahexa

Emergent Liouvillian exceptional points from exact principles

Recent years have seen a surge of interest in exceptional points in open quantum systems. The natural approach in this area has been the use of Markovian master equations. While the resulting Liouvillian EPs have been seen in a variety of systems and have been associated to numerous exotic effects, it is an open question whether such degeneracies and their peculiarities can persist beyond the vali