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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%

Composition and orientation dependent annealing of ion tracks in apatite - Implications for fission track thermochronology

The annealing behaviour of swift heavy-ion tracks in apatite from different origins is studied as a function of their crystallographic orientation and the mineral composition. The tracks were generated by irradiating the apatite samples with 2.3 GeV Bi ions, which have a comparable rate of energy loss to fission tracks in this mineral. The track radius was investigated using synchrotron-based smal

Morphology of ion irradiation induced nano-porous structures in Ge and Si1−xGex alloys

Crystalline Ge and Si1−xGex alloys (x = 0.83, 0.77) of (100) orientation were implanted with 140 keV Ge− ions at fluences between 5 × 1015 to 3 × 1017 ions/cm2, and at temperatures between 23 °C and 200 °C. The energy deposition of the ions leads to the formation of porous structures consisting of columnar pores separated by narrow sidewalls. Their sizes were characterized with transmission electr

Effect of annealing high-dose heavy-ion irradiated high-temperature superconductor wires

Heavy-ion irradiation of high-temperature superconducting thin films has long been known to generate damage tracks of amorphized material that are of close-to-ideal dimension to effectively contribute to pinning of magnetic flux lines and thereby enhance the in-field critical current. At the same time, though, the presence of these tracks reduces the superconducting volume fraction available to tr

Elongation of metallic nanoparticles at the interface of silicon dioxide and silicon nitride

In the process of shape transformation of metal nanoparticles (MNPs) embedded in dielectrics resulting from swift heavy-ion irradiation, key parameters such as the energy deposition threshold, the necessity of a molten track and the NP size have been identified for amorphous silicon dioxide. The extension of such parameters to other dielectrics is yet unclear. We present experimental evidence of t

Nanoscale density variations induced by high energy heavy ions in amorphous silicon nitride and silicon dioxide

The cylindrical nanoscale density variations resulting from the interaction of 185 MeV and 2.2 GeV Au ions with 1.0 μm thick amorphous SiNx:H and SiOx:H layers are determined using small angle x-ray scattering measurements. The resulting density profiles resembles an under-dense core surrounded by an over-dense shell with a smooth transition between the two regions, consistent with molecular-dynam

Vaporlike phase of amorphous Si O2 is not a prerequisite for the core/shell ion tracks or ion shaping

When a swift heavy ion (SHI) penetrates amorphous SiO2, a core/shell (C/S) ion track is formed, which consists of a lower-density core and a higher-density shell. According to the conventional inelastic thermal spike (iTS) model represented by a pair of coupled heat equations, the C/S tracks are believed to form via "vaporization" and melting of the SiO2 induced by SHI (V-M model). However, the mo

Structure, morphology and annealing behavior of ion tracks in polycarbonate

Ion tracks created in polycarbonate foils by irradiation with 2.2 GeV Au ions were characterized using a combination of small-angle x-ray and neutron scattering (SAXS/SANS) and Fourier transform infrared spectroscopy (FTIR). The ion tracks were found to consist of a cylindrical damage core with a radius of ∼2.5 ± 0.2 nm and a relative density approximately 5% below that of the pristine polycarbona

Intensified role of the European Union? : European Research Infrastructure Consortium as a legal framework for contemporary multinational research collaboration

This chapter gives an introduction to the European Research Infrastructure Consortium (ERIC) – a European Union (EU) policy tool introduced in 2009 with the purpose to set up and operate collaborative Research Infrastructures by granting them a legal personality and qualities of an international organization. The shared responsibility between the member states and the EU in the research and innova

Conical etched ion tracks in SiO2 characterised by small angle X-ray scattering

We present a systematic study of the evolution of chemically etched ion tracks formed in thermally grown a-SiO2 after irradiation with 1.1 GeV and 185 MeV Au ions. The irradiated material was subsequently etched with 2.5% hydrofluoric acid (HF) for different times yielding hollow conical shaped structures of various sizes. The characterisation of these structures was carried out by synchrotron-bas

“You have to live with some risk, it’s part of the profession”. Specialist ambulance nurses’ perceptions of assignments involving ongoing lethal violence

BackgroundAs a result of several violent terrorist incidents, authorities in Sweden have shifted from previous approaches of being certain that it is safe for the ambulance service to enter the scene, to a one where “safe enough” is sufficient, potentially making it possible to save more lives. The aim was therefore to describe specialist ambulance nurses' perceptions of the new approach to assign

Factors for not performing total body skin examinations in primary care in association with teledermoscopy

PURPOSE: To investigate factors related to omitted total body skin examination (TBSE) in skin cancer diagnostics while managing patients using teledermoscopy (TDS) in Swedish primary care.METHODS: 4,987 TDS referrals from primary care centers were analyzed to identify factors associated with failing to perform TBSE. Data collected included age, gender of patient and physician, and reason for a vis

Association between Metabolic Syndrome Status and Daily Physical Activity Measured by a Wearable Device in Japanese Office Workers

(1) Background: This study examined the cross-sectional association between metabolic syndrome (MetS) status classified into three groups and daily physical activity (PA; step count and active minutes) using a wearable device in Japanese office workers. (2) Methods: This secondary analysis used data from 179 participants in the intervention group of a randomized controlled trial for 3 months. Indi

m6A-driven SF3B1 translation control steers splicing to direct genome integrity and leukemogenesis

SF3B1 is the most mutated splicing factor (SF) in myelodysplastic syndromes (MDSs), which are clonal hematopoietic disorders with variable risk of leukemic transformation. Although tumorigenic SF3B1 mutations have been extensively characterized, the role of “non-mutated” wild-type SF3B1 in cancer remains largely unresolved. Here, we identify a conserved epitranscriptomic program that steers SF3B1

Socialt arbete vid suicidalt beteende inom psykiatrisk hälso- och sjukvård i Skåne - tidigare och aktuell psykosocial forskning

Varje suicid är en personlig tragedi och representerar dessutom en omfattande samhällelig förlust. Problematiken bakom suicid är mångfacetterad och insatser behövs inom många olika domäner i samhället, bland annat finns ett stort behov av nya hälso- och sjukvårdsstrategier. Hälso- och sjukvårdskuratorn med sin tvärvetenskapliga utbildning har möjlighet att bidra till ett multifaktoriellt perspekti

A market for citizenships: Should citizenship be commodified?

Starting from the assumption that citizenship is propertythat would be more valuable if it were transferable, the paper explores the idea of commodification of citizenship. The paper provides arguments in favor of commodification and recommendations to how the market for citizenships should be designed. A market for citizenships could result in an improved matching between employer and employee whStarting from the assumption that citizenship is valuable private property that would be even more valuable if it were transferable, the paper explores the idea of commodification of citizenship. The paper provides arguments in favor of commodification of citizenship and recommendations to how the market for citizenship should be designed. A market for citizenships could result in an improved matc

Under olivträdet : Om våra hungriga jordar från Toscana till Skåne

I den lilla medeltida byn Chianni i Toscana har olivodlingarna försörjt invånarna i flera hundra år. Varje höst reser markbiologen Håkan Wallander och hans vänner dit för att plocka oliver och sköta om de vackra träden.I Toscanas vänliga landskap kan de experimentera med olika odlingsmetoder i olivlunden. Lokala experter lär dem hur träden traditionellt ska beskäras och gödslas, men som jordforska