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The aim of this work was to study the leaching of hazardous substances in additives and admixtures that are commonly contained in concrete. Time-dependent leaching has been analyzed for three types of metal containing concretes: with ordinary Portland cement (OPC), fly ash, and slag. The concretes had uniform leaching patterns, clearly above detection limits. The prolonged diffusion test of 1,700
We reconstructed forest development and disturbance events (fire and logging) during the last 1000 yr with tree-ring data, pollen and charcoal analysis from a semi-natural Fagus sylvatica-Picea abies forest (ca. I km(2)) in the hemiboreal zone. According to pollen analysis, Quercus robur together with Pinus sylvestris was abundant in the forest until the turn of the 18th/19th centuries when these
Optimal migration theory predicts that birds minimizing the overall time of migration should adjust stopover duration with respect to the rate of fuel accumulation. Recent theoretical developments also take into account the wind situation and predict that there is a time window (a set of days) during which birds should depart when assisted by winds but will not do so if there are head winds. There
Stribeck's publications Wugellager fur beliebige Belastungen' and 'Die wesentlichen Eigenschaften der Gleit- und Rollenlager' were remarkable for their time. Many of the findings were revolutionary and are still considered quite modem. The method used by Stribeck to calculate load distribution between the balls within a ball bearing is still used today, otherwise, a full finite element analysis wo
Popular Abstract in Swedish I centrum för min avhandling står den spanske dominkanen Alonso de Montúfar (ca.1489-1572) som mellan 1554 och 1572 var ärkebiskop av Mexiko. I synnerhet har jag studerat hur ärkebiskop Montúfar ville att kyrkan skulle organiseras (hans kyrkovision) och hur han försökte förverkliga sin vision (hans kyrkopolitik). Montúfar kom till Mexiko drygt trettio år efter den spanThis dissertation focuses on Archbishop Alonso de Montúfar OP (ca. 1489-1572). It seeks to explore two decades of sixteenth century Mexican Church History mainly through the study of documents found in Spanish and Mexican archives. Born outside Granada in Southern Spain, just after the conquest from the Muslims, Alonso de Montúfar assumed teaching and leading positions within the Dominican order.
The Siemens SGT-800 3rd generation DLE burner fitted to an atmospheric combustion rig has been numerically investigated. Pure methane and methane enriched by 80 vol% hydrogen flames have been considered. A URANS (Unsteady Reynolds Averaged Navier-Stokes) approach was used in this study along with the k − ω SST and the k − ω SST-SAS models for the turbulence transport. The chemistry is coupled to t
Many time-series smoothing methods can be used for reducing noise and extracting plant phenological parameters from remotely-sensed data, but there is still no conclusive evidence in favor of one method over others. Here we use moderate-resolution imaging spectroradiometer (MODIS) derived normalized difference vegetation index (NDVI) to investigate five smoothing methods: Savitzky-Golay fitting (S
Experimental observations and advanced computer simulations in High Energy Physics (HEP) paved the way for the recent discoveries at the Large Hadron Collider (LHC) at CERN. Currently, Monte Carlo simulations account for a very significant amount of computational resources of the Worldwide LHC Computing Grid (WLCG). The current growth in available computing performance will not be enough to fulfil
The statistical resources at hand for segregation research are usually almost exclusively confined to annual or decennial records where the only available spatial information is the individual’s place of residence. This coarse temporal periodicity and spatial resolution provides a very limited account of people’s diurnal lives. Incorporating mobility and temporal dimensions in segregation analysis
The present paper deals with the acquisition of gender in Italian and French by monolingual and bilingual children. In our study, which is based on the data of five children, we focus on the gender marking on articles, because gender is most frequently marked on these elements. We claim that the Italian gender system is easier to acquire than the French gender system. This is because the formal pr
This paper explores an innovation case within a “smart” Swedish mid-sized city that works extensively with digitalization.Over a long period in time, city populations and city tourism have increased, while more urgentchallenges connected to sustainability have emerged along with health-related problems. In parallel the already established and ongoing digitalization of society was fortified in the
Common single-nucleotide polymorphisms (SNPs) are predicted to collectively explain 40–50% of phenotypic variation in human height, but identifying the specific variants and associated regions requires huge sample sizes1. Here, using data from a genome-wide association study of 5.4 million individuals of diverse ancestries, we show that 12,111 independent SNPs that are significantly associated wit
Despite rapid development, modern graphics hardware is still much too slow to render photo-realistic images in real time, and it will most likely remain so if we rely only on yearly growth in hardware performance. Therefore, better algorithms are constantly needed in order to advance the field. In the first part of this thesis, we present new algorithms for hardware rasterization. We investigate
The objective of this paper is to perform an empirical description and analysis of the duration of EU imports from the rest of the world. Toward this aim, we employ a rich data set of detailed imports to individual EU15 countries from 140 non-EU exporters, covering the period 1962-2006. Using these data, we both perform a thorough descriptive analysis of the duration of EU trade, and test the data
BACKGROUND: Mean diffusivity (MD) and fractional anisotropy (FA) from diffusion MRI (dMRI) have been associated with cell density and tissue anisotropy across tumors, but it is unknown whether these associations persist at the microscopic level.PURPOSE: To quantify the degree to which cell density and anisotropy, as determined from histology, account for the intra-tumor variability of MD and FA in
Objective In numerous studies aspiring to clarify when to discontinue direct oral anticoagulants (DOAC) before central nerve blocks (CNB), information about the technique: spinal, epidural, indwelling catheter, multiple attempts, ‘bloody tap’: is incomplete. This creates difficulty making evidence-based recommendations regarding the safest time frame between the last dose of DOAC and CNB to avoid
