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The aim of this paper is to investigate the feasibility and limitations of activity-concentration estimation for 223Ra using SPECT. Phantom measurements are performed using spheres (volumes 5.5 mL to 26.4 mL, concentrations 1.6 kBq mL-1 to 4.5 kBq mL-1). Furthermore, SPECT projections are simulated using the SIMIND Monte Carlo program for two geometries, one similar to the physical phantom and the

Converting information into work has, during the past decade, gained renewed interest as it gives insight into the relation between information theory and thermodynamics. Here, we theoretically investigate an implementation of Maxwell's demon in a double quantum dot and demonstrate how heat can be converted into work using only information. This is accomplished by continuously monitoring the charg

Background: Observational studies have linked low vitamin D status to unfavorable cardiometabolic risk markers, but double-blinded vitamin D intervention studies in children are scarce. Objectives: The aim was to evaluate the effect of different doses of a vitamin D supplement on cardiometabolic risk markers in young healthy Swedish children with fair and dark skin. Methods: Cardiometabolic risk m

How customers develop purchase intentions in online shopping has been a perennial area of interest. In this research note, we ask whether males and females leverage trust in and perceive reputation of online retailers differently in reporting purchase intentions. Drawing on the broader literature on differences in males and females in online shopping behaviors, we propose that females rely on repu

How customers develop purchase intentions in online shopping has been an area of recent interest. In this study, we ask whether males and females leverage trust into and perceived reputation of online retailers differently in reporting purchase intentions. Drawing on the literature on differences in males and females in online shopping behaviors, we propose that females rely on reputation in devel

Det er kjent fra før at langdistansebinding av refleksive pronomen forekommeri norsk. Fenomenet har blitt kobla til logoforisitet, men det har også blitt hevdaat langdistanse binding er mulig i visse ikke-logoforiske kontekster. I denne artikkelenargumenterer jeg for at langdistansebinding i norsk alltid er logoforisk,og at det samme gjelder for mellomdistansebinding. Det er bare lokal bindingsom Det er kjent fra før at langdistansebinding av refleksive pronomen forekommer i norsk. Fenomenet har blitt kobla til logoforisitet, men det har også blitt hevda at langdistanse­binding er mulig i visse ikke-logoforiske kontekster. I denne artikkelen argumenterer jeg for at langdistansebinding i norsk alltid er logoforisk, og at det samme gjelder for mellomdistansebinding. Det er bare lokal binding

Based on stochastic differential equations (SDEs), we analyse the overall performance of heterogeneous power systems network, subject to spatially distributed and correlated noises with random initial conditions. We determine bounds on the H2 norm of the heterogeneous system based on a closedform of the norm of the homogeneous power system. Then, we formulate possible scenarios for performance opt

In developing countries, there is often a lack of a comprehensive data set that supports the development of coherent policies on resource recovery from wastewater treatment. This paper aims to contribute to the elaboration of resource recovery projects by providing accurate and updated data from wastewater treatment plants such as those located in the region of the Macrometropolis of Sao Paulo. Th

This study deals with the desalination plant at the Eastern Mediterranean University (Cyprus) and its environmental impact. The reverse osmosis plant produces normally 42m3/hr potable water from 120m3/hr feed. The feed concentration reaches up to 36,000ppm TDS, while an approximate amount of 73.8m3/hr is led out from a pipe of 10inches diameter with a concentration of about 56,000ppm and the perme

Seawater desalination constitutes an important source for water supply to the population bordering the Arabian Gulf, the Mediterranean Sea, and the Red Sea. Desalination has advantages and disadvantages which may depend on the region, location, technology, impact and amount of fresh water production. Desalination may also have other impacts. For example, chemicals added in the pre-treatment stages

Desalination is an important method and cost effective for producing potable water and is a rapidly growing technology worldwide. According to the International Desalination Association, IDA data base the amount of desalinated water soon will reach the 100 MCM per day, which means double of this amount (200 MCM/day) is called brine discharge or rejected amount. In this study, we planned to follow

Using a new biography of banks, we examine the stability of Irish banking from 1797 to 1826 by constructing a failure rate series. We find that the ultimate cause of the frequent and severe banking crises was the crisis-prone structure of the banking system, which was designed to benefit the political elite. There is little evidence to suggest that wildcat banking or the failure of the Bank of Ire

Transition-metal ion doping has been demonstrated to be effective for tuning the photoluminescence properties of perovskite quantum dots (QDs). However, it would inevitably introduce defects in the lattice. As the Mn concentration increases, the Mn dopant photoluminescence quantum yield (PLQY) first increases and then decreases. Herein the influence of the dopant and the defect states on the photo

Little is known about the demographic/life-style/physiological determinants explaining the variation of serum perfluoroalkyl acid (PFAA) concentrations in children. We identified significant determinants in children and investigated the influence of low-level PFAA-contaminated drinking water (DW) (<10 ng L-1 of single PFAAs) on serum concentrations. Four perfluorosulfonic acids (PFSAs) and 11 perf

All ten LIGO/Virgo binary black hole (BH-BH) coalescences reported following the O1/O2 runs have near-zero effective spins. There are only three potential explanations for this. If the BH spin magnitudes are large, then: (i) either both BH spin vectors must be nearly in the orbital plane or (ii) the spin angular momenta of the BHs must be oppositely directed and similar in magnitude. Then there is

This thesis uses field experiments, lab experiments, and theory to study questions that are relevant to the fields of education and behavioral economics.The first paper, Threshold Incentives and Academic Performance, begins with the observation that students often face incentives to reach performance thresholds. To study how these incentives affect their performance, Erik Wengström and I conduct a