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Size characterisation of noble-metal nano-crystals formed in sapphire by ion irradiation and subsequent thermal annealing

Metallic nano-particles embedded in transparent dielectrics are very important for new technological applications because of their unique optical properties. These properties depend strongly on the size and shape of the nano-particles. In order to achieve the synthesis of metallic nano-particles it has been used the technique of ion implantation. This is a very common technique because it allows

Size-and shape-dependent nonlinear optical response of au nanoparticles embedded in sapphire

Nonlinear optical response of Au metallic nanoparticles, synthesized and embedded in sapphire by using ion implantation, as a function of their size and shape is studied. The size of the Au NPs was varied by controlling the annealing time of the gold-irradiated sapphire in a reducing atmosphere. Their shape was changed from approximately spherical to prolate by swift heavy-ion irradiation using Si

Functional genomics approaches to dissect causal DNA variations in obesity and type 2 diabetes

GWAS studies have identified hundreds of loci that associate with obesity and type 2 diabetes. However, the functional relevance of the genetic variants, and their impact on disease or traits, is largely unknown. To address those questions, we applied functional genomics approaches to study genetic variants pertinent to obesity and type 2 diabetes-related traits.In paper I, we demonstrate that rs6

Vocational education in Sweden and youth transitions to working life : - challenges and possibilities in the light of a local follow-up study

The basis of this article is a follow-up study of a cohort of pupils in the third largest city of Sweden, Malmö. The pupils finished fourth grade at compulsory school in 2008. We have data about every individual in the cohort as well as corresponding information about their parents. The information concern educational choices, educational accomplishments, employment relations, incomes from work and

Benefits, Challenges and Applications of Ultra-High Field Magnetic Resonance

Human ultra-high field (UHF) MR at 7T and above has been on a rapid rise since the first installations in the 1990s, motivated by the opportunities created by SNR gains and contrast changes. Research efforts were for long focused mainly on technological developments to cope with the challenges posed by UHF. This has brought 7T MR neuroimaging to maturity and into an application dominated realm, fu

Degrees of Freedom and Characteristic Modes

The number of degrees of freedom is a crucial parameter in many electromagnetic problems. In for example modern communication systems spatial diversity is often employed through multiple beams to enhance capacity and reliability. However, while the degrees of freedom can be computed, their connection to physical quantities is not as easily understood. To address this issue, this paper proposes a s

Orientation dependence of swift heavy ion track formation in potassium titanyl phosphate

Potassium titanyl phosphate crystals in both x-cut and z-cut were irradiated with 185 MeV Au ions. The morphology of the resulting ion tracks was investigated using small angle x-ray scattering (SAXS), transmission electron microscopy (TEM), and atomic force microscopy (AFM). SAXS measurements indicate the presence of cylindrical ion tracks with abrupt boundaries and a density contrast of 1 ± 0.5%

Temperature and Tree Size Explain the Mean Time to Fall of Dead Standing Trees across Large Scales

AbstractDead standing trees (DSTs) generally decompose slower than wood in contact with the forest floor. In many regions, DSTs are being created at an increasing rate due to accelerating tree mortality caused by climate change. Therefore, factors determining DST fall are crucial for predicting dead wood turnover time but remain poorly constrained. Here, we conduct a re-analysis of published DST f

Försvarsförmåga - En begreppsutredning

The concept of defense capability is commonly used in Swedish social debate and within strategically oriented communication from the government and armed forces. However, this concept does not origin from any formally established definition or concept clarification. Instead, its meaning varies, or is implicit, which is unfortunate when this capability needs to be addressed and communicated intelli

Classification of point-of-care ultrasound in breast imaging using deep learning

Early detection of breast cancer is important to reduce morbidity and mortality. Access to breast imaging is limited in low- and middle-income countries compared to high-income countries. This contributes to advance-stage breast cancer presentation with poor survival. Pocket-sized portable ultrasound device, also known as point-of-care ultrasound (POCUS), aided by decision support using deep learn

Ett skattesystem för Sverige i en global värld

Sänk skatten på arbete, inför enhetlig moms och rak kapitalbeskattning. Det föreslår nationalekonomen Åsa Hansson i en ny SNS-rapport. Mycket har förändrats sedan den stora skattereformen 1990–91. Om skattesystemet görs om utifrån dagens förutsättningar kan Sverige få högre tillväxt och sysselsättning, menar hon.

Optimal Multitaper Spectrograms

Multitaper spectrograms have been proposed as a method of improving the spectrogram as a time-frequency representation (TFR). This thesis aimed to investigate both previously used and new methods for combining multitaper spectrograms of a Gaussian signal and a chirp. More specifically, the use of new measures to optimize the weights of a weighted sum of spectrograms was tested and evaluated. The o

Gamma Spectrometry

Gamma spectrometry primarily is used for identification and quantification of gamma-emitting radionuclides present in samples collected from a specific environment. The objective is often to determine, with a certain confidence, whether the activity concentration of the present gamma emitters exceed some reference level: for example, a criterion for the highest level of impurity of gamma emitters

The Swedish version of EMPATHIC-30 translation and initial psychometric evaluation

Background: One way to measure quality of care is by measuring satisfaction of provided care among patients and their families. EMpowerment of PArents in THe Intensive Care 30 (EMPATHIC-30) is a self-reported questionnaire grounded on the principles of FCC aiming to measure parents' satisfaction with paediatric intensive care. There is lack of Swedish questionnaires measuring satisfaction with pae

Ukrainian refugee solidarity mobilization online

According to UNHRC, approximately 5 million refugees fled Ukraine between the 24th of February and the 17th of April 2022. Governments and civil societies all over Europe face a major task of mobilizing resources to address the refugees' welfare needs. This effort is partly dependent upon the mobilization of informal civil society. In this research note, we present preliminary findings on the onli

High resection rates of colorectal liver metastases after standardized follow-up and multimodal management : an outcome study within the COLOFOL trial

Background: Outcome after colorectal liver metastases (CRLM) resection has improved over time, despite increased resection rates. Hence, it's crucial to identify all patients possible to treat with curative intent. The objectives of this study were to map recurrence pattern, treatment strategy and survival depending on treatment and follow-up strategy. Methods: In the COLOFOL-trial, patients with