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The ages of the oldest stars in the Galaxy indicate when star formationbegan, and provide a minimum age of the Universe. Radioactive dating ofmeteoritic material and stars relies on comparing the present abundanceratios of radioactive and stable nuclear species to the theoreticallypredicted ratios of their production. The radioisotope 232 Th (half life14 Gyr) has been used to date Galactic stars,
A selection of papers devoted to the intricate history of freemasonry and other fraternal organisation in the Middle East.
We test the hypothesis that the spread in the age-metallicity plot of the solar neighborhood is due to a mixture of stars belonging to kinematically different sub-populations of the Galactic disk, i.e., the thin and the thick disk. We use a kinematic subsample of similar to 600 stars from a sample of similar to 6000 dwarf and subgiant stars from the Hipparcos catalog. All of these stars have a ful
Popular Abstract in Swedish I världen beräknas det finnas cirka 38 miljoner blinda människor enligt Värdshälsoorganisationen (WHO). Av dessa är 1,5 miljon barn under 16 år. Blindhet definieras av WHO som bästa korrigerade synskärpa under 0,05 (man klarar således inte att läsa översta raden på en vanlig synprövningstavla på halva normalavståndet), detta med bästa glasögonkorrektion och med båda ögoKnowledge of the epidemiology of visual impairment in children forms one of the cornerstones in paediatric ophthalmology. To gain an overview of the situation in Sweden an epidemiological study was performed. Totally 2373 visually impaired children were found, giving an age-specific prevalence of 10,9/10 000. Childhood blindness (i.e. vision <0,05) was seen in 25%. Male/female ratio was 1,20. Addi
Based on detailed 2D and 3D numerical radiation hydrodynamicscalculations of time-dependent compressible convection, we have studiedthe dynamics and thermal structure of the convective surface layers of aprototypical late-type M-dwarf at Teff=2800 K, and log g=5.0with solar chemical composition. The thermal structure of the atmosphereis dominated by molecular absorption, the formation o
The paper examines the metaphysical ideas employed to embed Hellenistic astrology in an Indian religious and cultural context, relating them to questions of causality, determinism and moral freedom. These ideas are contrasted against the largely Thesophical adaptation of the same concepts, which in the 19th and 20th centuries formed the emerging modern astrology in Europe, and which led it to aban
The edited volume contains papers on general European topics written by PhD-candidates of several academic disciplines.
Two efficient Monte Carlo models are described, facilitating predictions of complete time-resolved fluorescence spectra from a light-scattering and light-absorbing medium. These are compared with a third, conventional fluorescence Monte Carlo model in terms of accuracy, signal-to-noise statistics, and simulation time. The improved computation efficiency is achieved by means of a convolution techni
In this paper the use of control volumes in continuum mechanics is discussed. The global balance equations for momentum and moment of momentum for general control volumes are presented and their equivalence to the balance equations for material bodies is demonstrated. We also consider an approach based on the formulation of a principle of virtual power for control volumes. Based on this principle
Popular Abstract in Swedish Det är lätt att förundras över hur snabbt och lätt barn lär sig behärska språket, med tanke på vilket komplicerat system det är. Barnet ska lära sig betydelser, ordböjningar och principer för hur ord kombineras, det ska behärska ljudsystem, artikulation, betoningsmönster och satsmelodi. Detta ska barnet behärska både för att själv producera språk och för att förstå vad The main purpose of this work was to explore grammar in Swedish children with Specific Language Impairment (SLI), that is children with impaired language development in the presence of normal hearing and otherwise normal development. In four differents studies, spontaneous data from six children with SLI were analysed and compared with data from either younger children with phonological impairmen
This study, which is the first and main part of a two-volume work, is concerned with the history and philology of original and translated works Adversus Iudaeos circulating among the Eastern Slavs from the baptism of Rus' c.988 till the early 16th century. Excluded is the literature of Lithuanian Ruthenia from the 14th century onwards. On the material of 11–15th-century MSS the dissemination of th
Vascular involvement in neurofibromatosis sometimes occurs and usually affects larger blood vessels of internal organs. We describe an unusual case of a now 41-year-old man with extensive skin involvement with ulcerations and histopathologic features of fibromuscular dysplasia, which has not been previously reported in the skin.
Carotenoids are, along with chlorophylls, crucial pigments involved in light-harvesting processes in photosynthetic organisms. Details of carotenoid to chlorophyll energy transfer mechanisms and their dependence on structural variability of carotenoids are as yet poorly understood. Here, we employ femtosecond transient absorption spectroscopy to reveal energy transfer pathways in the peridinin-chl
Constitutional aneuploidy is typically caused by a single-event meiotic or early mitotic error. In contrast, somatic aneuploidy, found mainly in neoplastic tissue, is attributed to continuous chromosomal instability. More debated as a cause of aneuploidy is aneuploidy itself; that is, whether aneuploidy per se causes chromosomal instability, for example, in patients with inborn aneuploidy. We have
Countering Coups: Strengthening Social Contracts in Africa - The Raoul Wallenberg Institute of Human Rights and Humanitarian Law Skip to content Search for: Search Button Home About Us Who We Are Our History About Raoul Wallenberg Our Theory of Change Staff Opportunities Annual Reports Whistleblower Our work What we do Multi-Disciplinary Research Higher Education Strategic Advice and Analysis Outr
https://rwi.lu.se/blog/countering-coups-strengthening-social-contracts-in-africa/ - 2026-07-10
This thesis investigates general equality concerns regarding the current ECOFIN Pillar 2 Directive proposal from 12th of March 2022. More precisely, the author will analysis, if the Directive proposal infringes Article 20 of the Charter of Fundamental Rights through (1) directly connecting a EUR 750 threshold to its scope of application and (2) excluding specific types of entities from its scope o
The Brazilian tax system is known to be very complex. The main reasons to that is presumably the fact that the federalist pact adopted by the Brazilian Federal Constitution gives a considerable autonomy to all federal entities (the federal government, the states, the Federal District and the municipalities) to impose levies. Besides that, the Brazilian tax system is composed by numerous levies, su
