Sökresultat

Filtyp

Din sökning på "*" gav 533103 sökträffar

Octahedral distortion driven by CsPbI3nanocrystal reaction temperature-the effects on phase stability and beyond

Cesium lead iodide (CsPbI3) perovskite nanocrystals (NCs) suffer from a known transformation at room temperature from their red-emitting (black) to non-emitting (yellow) phase, induced by the tilting of PbI6 octahedra. While the reported attempts to stabilize CsPbI3 NCs mainly involve Pb2+-site doping as well as compositional and/or NC surface engineering, the black phase stability in relation onl

Work in crisis : Managing fantasies about distant strangers, managing aid workers

This article provides an insight into the world of Polish development workers operating in South Sudan. It shows that the conceptualisations of aid work in terms of a ‘mission’, a unique job with a special, ethical goal, a difficult, risky operation requiring specific skills are not incidental. Instead, the point is made, that such ways of thinking about foreign aid and distant locations are stron

Governance for Climate Change Adaptation in transboundary conservation areas A case study of La Amistad International Park (Pacific Side) between Costa Rica and Panama

Climate change is an urgent global issue affecting millions of people and several ecosystems. However, there is a significant gap between what has been done and what is needed for climate change adaptation. Conservation areas play a crucial role in responding to climate change by providing essential ecosystem services and supporting biodiversity and human adaptation. However, there is a lack of re

Combined use of Sentinel-2 and Sentinel-1 data for wheat crop yield forecasting with machine learning algorithms

Vegetation indices derived from remotely sensed optical data are commonly used for crop monitoring in precision agriculture, but their information capability can be hindered by the presence of clouds. Consequently, areas with frequent cloud cover like the southwest of Sweden may have limited access to usable optical data. Nonetheless, the addition of synthetic aperture radar (SAR) data can provide

Marine PET Hydrolase (PET2) : Assessment of Terephthalate- and Indole-Based Polyester Depolymerization

Enzymatic polyethylene terephthalate (PET) recycling processes are gaining interest for their low environmental impact, use of mild conditions, and specificity. Furthermore, PET hydrolase enzymes are continuously being discovered and engineered. In this work, we studied a PET hydrolase (PET2), initially characterized as an alkaline thermostable lipase. PET2 was produced in a fusion form with a 6-h

Seeking License to Operate in Times of Uncertainty: A discourse analysis of how a GRO communicates to obtain loyalty during a prevailing inflation

During recent years, Swedish society has been affected by circumstances causing conditions for uncertainty. Since the beginning of 2022 the prevailing inflation has caused further implications on societal, organizational and individual levels. Due to the economic difficulties, grocery prices have increased significantly. As the grocery retail industry fulfills a primary need for consumers, this re

ASSERT - Kontroll av markstabilisering med resistivitetstomografi (ERT)

Markstabilisering blir allt vanligare för exploatering av områden med dålig bärighet.Det finns dock behov av bättre och volymstäckande kontrollmetoder förkvalitetssäkring. Kontrollmetoderna kan delas upp i två steg, där det första sker iomedelbar anslutning till inblandning av bindemedel för att kontrollera om manlyckats behandla hela den avsedda volymen, eller om det finns zoner som behöverkompleSoil stabilisation is becoming increasingly common for the development of areas withpoor bearing capacity. However, there is a need for better and volume-wide controlmethods for quality assurance. The control methods can be divided into two steps,where the first takes place in immediate connection to the mixing of binders to checkwhether the entire intended volume has been successfully treated, or

A randomized trial involving a multifunctional diet reveals systematic lipid remodeling and improvements in cardiometabolic risk factors in middle aged to aged adults

BACKGROUND: A multifunctional diet (MFD) combining foods and ingredients with proven functional properties, such as fatty fish and fiber-rich foods, among others, was developed and shown to markedly reduce cardiometabolic risk-associated factors.OBJECTIVE: Here, we aim at examining metabolic physiological changes associated with these improvements.METHODS: Adult overweight individuals without othe

Winter Wheat Drought Risk Assessment by Coupling Improved Moisture-Sensitive Crop Model and Gridded Vulnerability Curve

The crop drought risk assessment is an important basis for mitigating the effects of drought on crops. The study of drought using crop growth models is an integral part of agricultural drought risk research. The current Decision Support System for Agrotechnology Transfer (DSSAT) model is not sufficiently sensitive to moisture parameters when performing simulations, and most studies that conduct di

Activity quantification of 177Lu using a 360◦ CZT gamma camera - comparison with a dual-head Anger camera

Radionuklidterapi är en nuklearmedicinsk behandling där man använder sig av ett radioaktivt läkemedel för behandling av diverse sjukdomar, ofta kan det vara olika former av spridd cancer. Det görs genom att administrera radioaktiviteten i patienten där den söker sig till cancern och där strålar och därmed behandlar tumören. Den utsända strålningen från radionukliden består av laddade partiklar vilBackground and Aim: New SPECT cameras that use CZT detectors in a 360◦ configuration has recently been introduced. Together with Bayesian reconstruction methods employing Median Root Prior (MRP) and Relative Difference Prior (RDP), this constitutes an alternative to Anger-based SPECT for activity quantification. The aim of this thesis is to, by the use of both OS-EM and Bayesian reconstruction met

A Robust Direction of Arrival Estimation Method for Coherently Distributed Sources in an Impulsive Noise Environment

In this work, a computationally efficient evolutionary algorithm is proposed for estimating the direction of arrival (DOA) of coherently distributed (CD) sources corrupted by additive impulsive noise. The typical method, such as distributed signal parameter estimation (DSPE) method, requires a 2-D spectral peak search and cannot allow for coherent signals. The proposed method in this article uses

Optimized Workflow Framework in Construction Projects to Control the Environmental Properties of Soil

To optimize the workflow of civil engineering construction in a harbour, this paper developed a framework of the contaminant leaching assessment carried out on the stabilized/solidified dredged soil material. The specimens included the sampled sediments collected from the in situ fieldwork in Arendal and Kongshavn. The background levels of the concentration of pollutants were evaluated to assess t

Phrasal Proper Names in German and Norwegian

This paper discusses the morpho-syntax of phrasal proper names likeDeutsche Bahn ‘German Railway’ and Norske Skog ‘Norwegian Forest’ in Germanand Norwegian. As regards determiner elements, there are three types of phrasalproper names in German: some proper names do not have a definite article, some do,and yet others exhibit a possessive. Depending on the syntactic context, the first twotypes patteThis paper discusses the morpho-syntax of phrasal proper names like Deutsche Bahn ‘German Railway’ and Norske Skog ‘Norwegian Forest’ in German and Norwegian. As regards determiner elements, there are three types of phrasal proper names in German: some proper names do not have a definite article, some do, and yet others exhibit a possessive. Depending on the syntactic context, the first two types

Produktiv övning - En undersökning i hur effektivt två olika instuderingsmetoder kan tillämpas på musik med olika karaktär.

I denna uppsats har jag undersökt och tillämpat två olika instuderingsmetoder och tagit reda på hur effektiva de är vid instudering av olika typer av musikstycken. Jag har även reflekterat över möjliga utvecklingsområden för de båda metoderna. Med den ena metoden utgår jag mer från musiken och dess karaktär och den andra mer utifrån ett tekniskt perspektiv. Jag har övat in fyra olika stycken, tillIn this essay I have analysed and applied two different methods of practice and found out how effective they are when studying different kinds of musical pieces. I have also reflected on how to improve the two methods. One of the methods centres around the music and it’s character and the other one around a more technical point of view. I have studied four different pieces and applied the two diff

Multiple sclerosis diagnosis and phenotype identification by multivariate classification of in vivo frontal cortex metabolite profiles

Multiple sclerosis (MS) is a heterogeneous autoimmune disease for which diagnosis continues to rely on subjective clinical judgment over a battery of tests. Proton magnetic resonance spectroscopy (1H MRS) enables the noninvasive in vivo detection of multiple small-molecule metabolites and is therefore in principle a promising means of gathering information sufficient for multiple sclerosis diagnos

Modeling PFAS Transport in Groundwater - Exploring current approaches and evaluating parameter importance

Modellering av PFAS i grundvattnet - undersökning om vilka metoder som används och vilka parametrar som påverkar PFAS kan sprida sig till dricksvattnet genom grundvattnet, och det är därför viktigt att vi har kunskap om hur vi kan simulera denna spridning för att skydda våra dricksvattentäkter. Poly- och perfluorerade alkylsubstanser, även kallade PFAS, är en grupp kemikalier som är nästintill oPFAS contamination in drinking water is a current problem, and new regulations for drinking water limits were recently implemented in each member country of the EU in January this year. Understanding the spread of PFAS in groundwater is therefore important to prevent it from reaching drinking water sources. Groundwater modeling is a valuable tool for this purpose. However, due to the specific char

Search for the interatomic Auger effect in Nitrous Oxide

The interatomic Auger effect following O 1s ionization in N2O has been experimentally investigated using multi-electron coincidence spectroscopy. The expected transition energies have been established by comparison to the measured N 1s−1v−1 core-valence double ionization energies. We describe a procedure to eliminate the background of two competing processes contributing spectroscopic signatures t