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Lead-free double halide perovskite Cs 3 BiBr 6 with well-defined crystal structure and high thermal stability for optoelectronics

Halide perovskites have continued to rise as attractive light absorber materials, mainly driven by their potential wide applications in the fields of solar cells, photodetectors, lasers and others. However, Pb-containing perovskites are poisonous and could cause serious potential problems to our environment. Thus, there is a strong desire to develop lead-free perovskites as environmentally friend

Plasmon-exciton coupling of monolayer MoS2-Ag nanoparticles hybrids for surface catalytic reaction

The optical properties of monolayer molybdenum disulfide (MoS2)/Ag nanoparticle (NP) hybrids and their application to surface catalytic reactions were studied by transmission, photoluminescence (PL) and Raman spectroscopies. The local surface plasmon resonance (LSPR) of Ag nanoparticles was tuned to better match the exciton energy of monolayer MoS2. The PL of the hybrids was enhanced by more than

Participation weighting based on sociodemographic register data improved external validity in a population-based cohort study

Objective: To investigate whether inverse probability of participation weighting (IPPW) using register data on sociodemographic and disease history variables can improve external validity in a cohort study with selective participation. Study Design and Setting: We fitted various IPPW models by logistic regression using register data for the participants (n = 1,111) and nonparticipants (n = 1,132)

A Nationwide Cohort Study of Outcome after Pediatric Appendicitis

Introduction Children with appendicitis often present with complicated disease. The aim of this study was to describe the clinical management of pediatric appendicitis, and to report how disease severity and operative modality are associated with short- and long-term risks of adverse outcome. Materials and Methods A nationwide retrospective cohort study of all Swedish children (<18 years) diagnose

Ship plumes in the Baltic Sea Sulfur Emission Control Area: chemical characterization and contribution to coastal aerosol concentrations

In coastal areas, there is increased concern aboutemissions from shipping activities and the associated impacton air quality. We have assessed the ship aerosol propertiesand the contribution to coastal particulate matter (PM) andnitrogen dioxide (NO2) levels by measuring ship plumes inambient conditions at a site in southern Sweden, within a SulfurEmission Control Area. Measurements took place dur

Associations between antenatal and perinatal risk factors and cerebral palsy : a Swedish cohort study

OBJECTIVES: To investigate known and suggested risk factors associated with cerebral palsy in a Swedish birth cohort, stratified by gestational age. SETTING: Information on all births between 1995 and 2014 in Skåne, the southernmost region in Sweden, was extracted from the national birth register. PARTICIPANTS: The cohort comprised a total of 215 217 children. Information on confirmed cerebral pal

Is Data Sharing Caring Enough About Patient Privacy?: Part I: The Background

By Timo Minssen (CeBIL, UCPH), Sara Gerke & Carmel Shachar A recent US lawsuit highlights crucial challenges at the interface of data utility, patient privacy & data misuse The huge prospects of artificial intelligence and machine learning (ML), as well as the increasing trend toward public-private partnerships in biomedical innovation, stress the importance of an effective governance and

Managing human fear of bears and wolves

Decision-makers and managers spend substantial amounts of funding everyday on various interventions aimed at management of the large carnivores, for example different measures to mitigate depredation on livestock, e.g., removal of carnivores and fencing of livestock (see Linnell et al. 1996 for an extensive review). Management of species that occur in low numbers is challenging as relatively small

Du och jag men inte vi : om omöjliga möten och deras orsaker i J. M. Coetzees fiktion

Popular Abstract in Swedish Den sydafrikanske författaren J. M. Coetzee, nobelpristagare 2003, är en komplex författare som räknas till en av samtidens största. Han har en unik politisk hållning i sina romaner och vägrar konsekvent att ge några enkla lösningar, istället drar han in läsaren och tvingar henne att bli delaktig i verkens problematik. I denna studie, den första avhandlingen på svenska This dissertation is a study of In the Heart of the Country (1977), Waiting for the Barbarians (1980), Age of Iron (1990), Disgrace (1999), Diary of a Bad Year (2007), and Summertime (2009) written by J. M. Coetzee. The aim of the dissertation is to analyze these works of fiction using four postcolonial aspects that function as consistent themes in the novels. The aspects are; the relationship bet

Project Turnstone: Freedom of Movement and Passenger Experiences with Safety and Border Control in the Baltic Sea Area

Projekt Turnstone är ett samverkansprojekt delvis finansierat av Europeiska kommissionen. Projektet är ett initiativ av Stockholmspolisens gränsbevakningsenhet. Syftet med Projekt Turnstone är att minska gränsöverskridande brottslighet, förbättra dagligt samarbete mellan gräns, polis och kustbevakare i Östersjöregionen och förbättra säkerheten för passagerare i Östersjöregionen utan att göra avkalProject Turnstone is a collaborative project funded in part by the European Commission. The project is an initiative by the Stockholm Police. The purpose of the project is to improve day-to-day cooperation between border officers in the Baltic Sea region, decrease trans-boundary criminality, and increase security for passengers in the Baltic Sea area without compromising freedom of movement. Withi

Measurement Techniques for Respiratory Tract Deposition of Airborne Nanoparticles: A Critical Review.

Abstract Determination of the respiratory tract deposition of airborne particles is critical for risk assessment of air pollution, inhaled drug delivery, and understanding of respiratory disease. With the advent of nanotechnology, there has been an increasing interest in the measurement of pulmonary deposition of nanoparticles because of their unique properties in inhalation toxicology and medicin

Limitations in the Use of Unipolar Charging for Electrical Mobility Sizing Instruments: A Study of the Fast Mobility Particle Sizer

A comparison between three different types of particle sizing instruments (fast mobility particle sizer, FMPS; electrical low pressure impactor, ELPI; and scanning mobility particle sizer, SMPS) and one condensation particle counter (CPC) was made to compare instrument response in terms of size distributions and number concentration. Spherical oil droplets in 39 different sizes, with geometric mea

Generation and characterization of stable, highly concentrated titanium dioxide nanoparticle aerosols for rodent inhalation studies

The intensive use of nano-sized titanium dioxide (TiO2) particles in many different applications necessitates studies on their risk assessment as there are still open questions on their safe handling and utilization. For reliable risk assessment, the interaction of TiO2 nanoparticles (NP) with biological systems ideally needs to be investigated using physico-chemically uniform and well-characteriz

Fine-particle emissions from solid biofuel combustion studied with single-particle mass spectrometry: Identification of markers for organics, soot, and ash components

The effects of combustion phase and fuel on smoke particle emissions from a wood stove operated with three different wood fuels and from a corn stove were investigated. A single-particle mass spectrometer (aerosol time of flight mass spectrometer (ATOFMS)) was used for time-and size-resolved chemical signatures and a scanning mobility particle sizer (SMPS) was used for online mobility size distrib