Sökresultat

Filtyp

Din sökning på "*" gav 533806 sökträffar

Telemedicine networks for acute stroke : An analysis of global coverage, gaps, and opportunities

Background: Despite the proven efficacy of telestroke in improving clinical outcomes by providing access to specialized expertise and allowing rapid expert hyperacute stroke management and decision-making, detailed operational evidence is scarce, especially for less developed or lower income regions. Aim: We aimed to map the global telestroke landscape and characterize existing networks. Methods:

Pulsed septum for the LNLS injector

The design and construction of a pulsed thin septum for the LNLS UVX injection system are presented. The injection system uses two septa and three kickers to inject the 120 MeV electron beam from the Linac into the storage ring. The present system uses two d.c. septa. A pulsed thin septum is under construction in order to reduce the septum wall thickness from the present 5.5 mm to 1.5 mm, thus imp

I skuggan av systemet - En diskursanalys om hur normbrytande funktionalitet konstrueras och hur funktionsrättsperspektivet integreras i Lunds kommuns politiska diskurs

Denna studie syftar till att analysera hur normbrytande funktionalitet konstrueras och hur funktionsrättsperspektivet integreras i den politiska diskursen, med Lunds kommun som exempel. Genom att granska två offentliga styrdokument med praktiska riktlinjer relaterade till mänskliga rättigheter, används en foucaultinspirerad diskursanalys, främst enligt Christine Bylunds tillämpning av Foucaults te

Terrorismens avtryck En innehållsanalys av säkerhetsdiskursen i USA:s Försvarsrapporter år 2000-2002.

Denna uppsats undersöker diskursen kring terrorism i USA före och efter händelserna den 11 september 2001 genom en detaljerad analys av årsrapporter till presidenten och kongressen från försvarsministern under perioden 2000-2002. Med hjälp av en teoretisk ram baserad på Piet Hein van Kempens Four Concepts of Security - A Human Rights Perspective, som består utav 4 begrepp: internationell säkerhet,

Frontex om den riskfyllda resan - En kvalitativ innehållsanalys av Frontex identifiering av risker för migranter

Frontex spelar en avgörande roll för att skydda mänskliga rättigheter genom sin direkta kontakt med migranter. Denna studie undersöker hur Frontex beskriver risker för migranter och hur denna beskrivning har förändrats under det senaste decenniet. Studien analyserar tre av Frontex årliga riskanalysrapporter genom en kvalitativ innehållsanalys med en teoretisk ram om mänsklig säkerhet. Resultaten vFrontex plays a crucial role in protecting human rights through its direct contact with migrants. This study examines how Frontex describes risks to migrants and how this description has changed over the past decade. The study analyses three of Frontex's annual risk analysis reports through a qualitative content analysis with a theoretical framework on human security. The results show that Fro

Tourism challenges within a high cost of living crisis

Living costs have been increasing at an unprecedented rate compared to average trends over the last decade due to increasing uncertainty from various global events, including the COVID-19 pandemic and geopolitical tensions. Previous research indicates that people prioritize essential consumption over leisure and tourism activities during high cost-of-living crises. However, prior studies have over

LNLS vacuum system commissioning

The Brazilian National Synchrotron Light Laboratory, LNLS, operates a synchrotron light source consisting of a 1.37 GeV electron storage ring and a 120 MeV injector. A summary of the commissioning and operation performance of the vacuum system for the linear accelerator (LINAC), transport line, RF system and storage ring is presented. The performance of the subsystems is described including the ph

Commissioning and operation of the Brazilian synchrotron light source

The Brazilian National Synchrotron Light Laboratory, LNLS, operates a 1.37 GeV electron storage ring with a 120 MeV injector Linac. Commissioning of the storage ring at low energy started on May 1996 and now, an year later, we can store 120 mA at 120 MeV and ramp more than 75 mA to 1.37 GeV. A summary of the latest commissioning results and a description of the present operational performance of t

Memory State Dynamics in BEOL FeFETs : Impact of Area Ratio on Analog Write Mechanisms and Charging

This work presents dynamic state writing by combining ferroelectric (FE) polarization together with charge injection (CI) on Si-based ferroelectric MOSFETs as a novel approach for non-volatile memory design. FE capacitors are non-destructively integrated in the Back-End-of-Line (BEOL) with Si MOSFETs to create FE-Metal-FETs (FeMFETs). We explore the FE/MOS area ratio (AR) as a critical design para

Mind and Body: : dimensions of mind perception across agent types in human-agent interaction

The paper details a study that investigated dimensions of mind perception in social agents across various agent types. Factor analysis on 18 mental capacities was conducted across 12 characters, which included 9 social agents - 3 chatbots, 3 voice assistant speakers, and 3 robots. Two factors were identified that roughly aligned with task-oriented and affective-reflective cognitive processes. Base

Altered medial temporal lobe subregion volumes in systemic lupus erythematosus patients with neuropsychiatric symptoms

Background: Systemic lupus erythematosus (SLE) often presents with neuropsychiatric (NP) involvement, including cognitive impairment and depression. Past magnetic resonance imaging (MRI) research in SLE patients showed smaller hippocampal volumes but did not investigate other medial temporal lobe (MTL) regions. Our study aims to compare MTL subregional volumes in SLE patients to healthy individual

Vacuum system for the LNLS 500-MeV booster synchrotron

We present a summary of the commissioning and performance of the vacuum system of a 500-MeV booster synchrotron recently built at LNLS as part of a new injector for the LNLS light source. The main vacuum parameters of the synchrotron are pressure below 5×10-7Pa (lifetime of 1-2 hours), no in-situ baking, no cooling system, and a short recovery time after ventilation. All parts of the system are ma

Opinion on solar radiation modification – Ethical perspectives

In the context of the European Commission’s work to further the EuropeanGreen Deal, Executive Vice-President Maroš Šefčovič requested theEuropean Group on Ethics in Science and New Technologies (EGE) to issuea series of three Opinions providing ethical perspectives on different aspectsof the green transition.The Scoping Considerations provided by the Vice-President note that thequestions raised by

Commissioning of the LNLS 500-MeV booster synchrotron

We present results of the commissioning of a new injector for the Brazilian Synchrotron Light Source. The new injector consists of the existing 125-MeV LINAC and a new 500-MeV booster synchrotron. At present, about 40 mA can be injected into the booster and about 15 mA can be ramped up to 500 MeV at a repetition rate of 0.17 Hz. The new injector has allowed the accumulation of up to 540 mA in the

Preparation and characterization of Ti-Zr-V non-evaporable getter films to be used in Ultra-high acuum

An appealing procedure to obtain operating pressures in the 10-8 Pa range, which is necessary for the insertion devices elements of synchrotron sources, is to coat the inner ultra-high vacuum chamber walls with a thin film of non-evaporable getter (NEG) metals. Titanium, zirconium, vanadium, and their alloys are used as NEG materials due to their low activation temperature, high chemical activity,

No title

The substrate preparation for CVD diamond growth is of basic importance due to several reasons. A new molybdenum substrate preparation method, the aluminum oxide abrasion jetting, is introduced and compared with the traditional ones. Raman Scattering Spectroscopy (RSS) and Scanning Electron Microscopy (SEM) characterize CVD diamond films. CVD diamond films of good quality and uniformity were obtai

Satir handlar sällan om att enbart roa

"Man kan fråga sig varför de som otvivelaktigt har makt att påverka samhället lockas så pass av satiren. De har ju redan makten att påverka på andra sätt.” Det skriver medieforskaren Joanna Doona, författare till Det politiska skrattet: satir och medborgarskap, apropå debatten kring sverigedemokraten Richard Jomshofs spridande av muslimfientliga bilder.

Modelling and Forecasting of Electrical and Thermal Energy Units for a MPC based Home Energy Management System

With the shift towards renewable energy, the need for effective energy management grows. Renewable sources introduce variability and unpredictability, leading to volatile energy prices that expose consumers to fluctuations. To mitigate costs, energy storage and forecast models for electricity and thermal energy can be used to make optimal decisions on when to purchase energy from the grid. This th

Computational Approaches for Antimicrobial Peptide Delivery

Peptides constitute alternative molecules for the treatment of infections caused by bacteria, viruses, fungi, and protozoa. However, their therapeutic effectiveness is often limited by enzymatic degradation, chemical and physical instability, and toxicity toward healthy human cells. To improve their pharmacokinetic (PK) and pharmacodynamic (PD) profiles, novel routes of administration are being ex