Filtyp
Abstract: Coagulation of cellulose solutions is a process whereby many useful materials with variable microstructures and properties can be produced. This study investigates the complexity of the phase separation that generates the structural heterogeneity of such materials. The ionic liquid, 1-ethyl-3-methylimidazolium acetate ([C2mim][OAc]), and a co-solvent, dimethylsulfoxide (DMSO), are used t
Context. In the era of large high-resolution spectroscopic surveys such as Gaia-ESO and APOGEE, high-quality spectra can contribute to our understanding of the Galactic chemical evolution by providing abundances of elements that belong to the different nucleosynthesis channels, and also by providing constraints to one of the most elusive astrophysical quantities: stellar age. Aims. Some abundance
Control of crop pests by shifting host plant availability and natural enemy activity at landscape scales has great potential to enhance the sustainability of agriculture. However, mainstreaming natural pest control requires improved understanding of how its benefits can be realized across a variety of agroecologies. Empirical studies suggest significant but highly variable responses of natural pes
A library of large organic cation spacers is available for engineering the performance of layered two-dimensional (2D) halide perovskite devices. Despite extensive photophysics studies, there remains a research gap over the structure-function relations in 2D perovskites, especially the underlying factors influencing the Auger recombination (AR) process. Herein, the contributions of exciton binding
Liquid crystalline cubic phase nanoparticles (known as Cubosome), based on glycerol monooleate and stabilized by a nonionic block copolymer (Pluronic F-127), adsorb intact on hydrophilic silica in the presence of an electrolyte, except at high pH. To characterize the nature of the interaction, four techniques were applied in situ: fluorescence microscopy, quartz crystal microbalance with dissipati
This paper presents a measurement of the double-differential cross section for the Drell-Yan Z/γ∗ → ℓ+ℓ− and photon-induced γγ → ℓ+ℓ− processes where ℓ is an electron or muon. The measurement is performed for invariant masses of the lepton pairs, mℓℓ, between 116 GeV and 1500 GeV using a sample of 20.3 fb−1 of pp collisions data at centre-of-mass energy of s=8 TeV collected by the ATLAS detector a
Initiating the gain process in a free-electron laser (FEL) from an external highly coherent source of radiation is a promising way to improve the pulse properties such as temporal coherence and synchronization performance in time-resolved pump-probe experiments at FEL facilities, but this so-called "seeding" suffers from the lack of adequate sources at short wavelengths. We report on the first suc
Abstract: We consider improving Powheg+Minlo simulations, so as to also render them NLO accurate in the description of observables receiving contributions from events with lower parton multiplicity than present in their underlying NLO calculation. On a conceptual level we follow the strategy of the so-called Minlo′programs. Whereas the existing Minlo′framework requires explicit analytic input from
In the numerical integration of nonlinear autonomous initial value problems, the computational process depends on the step size scaled vector field hf as a distinct entity. This paper considers a parameterized transformation hf↦hf∘(I-γhf)-1,and its role in the finite step size stability of singly diagonally implicit Runge—Kutta (SDIRK) methods. For a suitably chosen γ> 0 , the transformed map is L
The accuracy of pore size distributions (PSD) obtained from gas adsorption and cryoporometry is compromised by the presence of advanced adsorption and advanced melting effects, respectively. In order to improve PSD accuracy, it is necessary to know the extent of such effects. In this work cryoporometry and adsorption have been combined to study the onset of advanced melting effects in a sample par
The chapter provides an overview of the development of the Muslim presence in Western Europe focussing on the period after World War II. The discussion deals with the experiences of Muslims in 19 countries which were located West of the “iron curtain” during the Cold War era (1946/1947–1989) and were therefore integrated in the capitalist world order and politically aligned with the USA. Beginning
BACKGROUND: There has been a growing body of evidence associating consumption of ultra-processed foods (UPF) with adverse health outcomes including depression, cardiovascular disease, all-cause mortality. However, whether UPF are associated with dementia is unknown. The authors investigated the associations between UPF and dementia incidence in UK biobank.METHODS: We included 72,083 participants (
Star clusters can harbour many exotic objects, including black holes (BHs), X-ray binaries and blue straggler stars. In dense stellar environments like globular clusters (GCs), two-body relaxation drives their dynamical evolution, where gravitational interactions between stars strive to equalize their kinetic energy in the cluster. Theoretical studies have indicated that some of these clusters can
Titel: “Förtroende är nyckeln till framgång” - En kvalitativ studie om vad det är som gör att unga vuxna får förtroende för influencers, ur följarnas perspektiv Seminariumdatum: 2022-06-03 Kurs: FEKH29, Examensarbete i marknadsföring på kandidatnivå, 15 högskolepoäng Författare: Björkenheim, Nicoline. Paulson, Stella. Åström, Carolina Handledare: Peter Svensson Nyckelord: Influencers, social media
Varje år sker det tusentals olyckor i trafiken i Sverige till följd av det stora transportbehovet i samhället. Transportstyrelsen har ett mål, Nollvisionen, som innebär att ingen ska dödas eller skadas allvarligt i trafiken. För att nå målet är en åtgärd att hastigheten sänks där gång- och cykeltrafik behöver interagera med motorfordon. Det kan man göra i form av sidoförskjutningar, avsmalning av
This report is made in order to evaluate the safety, in case of a fire, of personnel and patients in the surgical facilities at Helsingborg General Hospital. The problem that arises in this report is regarding the evacuation of patients that are undergoing surgery. This is a problem since it can take up to 60 minutes to finish a surgery and make a patient ready for evacuation. To determine the fir
This thesis offers a study on the performance of the short-term/long-term model by Schwartz and Smith (2000) in the copper futures market for the period 1993-07-21 to 2013-03-05. The model's performance is evaluated in terms of its ability to model the term structure of copper futures prices, and is for this purpose compared to two one-factor benchmark models, an Orstein-Uhlenbeck process and
Risk measures such as Value at Risk are highly dependent on a sample of daily returns. The daily return can be measured in different intervals and this thesis examines how the choice of the daily return interval affects derivative pricing, risk measures, fund performance and products with collateral agreements. It is shown that the VaR measure varies significantly with the choice of daily return i
