When Metadata Collides: Lessons on Combining Records from Multiple Repository Systems.

Presentation at Open Repositories 2014, Helsinki, Finland, June 9-13, 2014

“Till gruvhålet som suger och skrämmer” : en studie i Nils Bolanders predikan under åren 1940–1950

The aim of this thesis is to examine the preaching of Nils Bolander during the years 1940–1950. Nils Bolander (1902–1959) was a Swedish minister, later bishop, in the Church of Sweden. Bolander experienced his breakthrough as a preacher and a poet during the years 1940–1950, when he was a pastor of the Engelbrekt congregation in Stockholm. One characteristic of Bolander’s poetry as well as of his sermons is a rich and poetical language. At the same time he also had a clear agenda with his sermons with regard to their contents. The primary research question of this thesis is: What was Bolander’s purpose with his sermons? In this context, two secondary research questions were asked: 1) In what way does the poetical language support and assist the purpose of the sermons? 2) How is Bolander, as an individual and a preacher, engaged in the language and the contents of the sermons? The research material of this study consists of 152 hand-­written sermon manuscripts from church services held by Nils Bolander in Stockholm during the period in question. The method of the study is qualitative research with an abductive approach. Content analysis has formed the primary tool. With regard to the main research question, the purpose of Bolander’s sermons, my study indicated that the purpose was to rouse the listeners from their routine-­like faith and push them towards commitment and active service for God. In Bolander’s theology I found strong influences from Pietism but also some traits usually associated with the theological profile of the Oxford Group. Despite these influences, Nils Bolander’s theology is mainly founded on the Lutheran interpretation of faith. With regard to the secondary research questions concerning the poetical language as well as the role of the preacher my study concludes that the language, the individual and the contents were all connected in Bolander’s preaching and formed a whole that spoke to the audience in various ways.

Tutkimuskattilan taselaskenta

Diplomityön tavoitteena oli luoda Varkauden energiatutkimuskeskuksen tutkimuskäyttöön tarkoitetun kuplapetikattilan tase- ja säätölaskenta. Työssä on esitelty yleisesti kuplapetikattiloiden teoriaa ja tarkasteltu lyhyesti kuplapetikattilan muodostamaa kokonaisuutta energiantuotannossa. Työssä käsitelty tutkimuskattila ei ehtinyt valmistua ennen tätä diplomityötä, joten mittauksia käytön ajalta ei voitu suorittaa ja sisällyttää tähän työhön. Lisäksi mahdolliset käytössä havaittavat korjaukset ja parannukset taselaskentaan jäivät tämän työn tarkastelun ulkopuolelle. Taselaskennan muodostamisessa hyödynnettiin kattilan suunnitteluvaiheessa luotuja säätö- ja PI-kaavioita. Säätömekaniikkaa luodessa huomioitiin mahdollisimman tarkasti automaatiojärjestelmän vaatimukset ja suorituskyky. Työssä on esitetty suuri määrä kattilalaskennan kannalta keskeisiä yhtälöitä. Prosessia ja säätömekaniikkaa mallinnettiin laskentaperusteisesti, työssä on esitetty yhtälöistä saatavat tulokset kattilaa ajettaessa tyypillisillä arvoilla 100 %:n teholla. Työn tuloksena tutkimuskattilalle saatiin säätömekaniikka, jolla pystytään arvioimaan viipymäaikaa kattilassa. Lasketun viipymäajan avulla polttoprosessi kattilassa voidaan suunnitella ja suorittaa tutkimuskäyttöön vaaditulla tarkkuudella ja laissa säädettyjen määräyksien mukaan, mikäli kierrätyspolttoainetta käytetään yli 50 tonnia vuodessa.

"And the rich man also died; and he was buried in hell" : the social ethos in mendicant sermons

Doctoral dissertation, University of Tampere

Understorey vegetation in fresh and Herb-Rich upland forests in South-west Lapland

Summary

Element speciation and behaviour in metal-rich Boreal river and estuarine systems using ultrafiltration and chemical modelling

The bioavailability of metals and their potential for environmental pollution depends not simply on total concentrations, but is to a great extent determined by their chemical form. Consequently, knowledge of aqueous metal species is essential in investigating potential metal toxicity and mobility. The overall aim of this thesis is, thus, to determine the species of major and trace elements and the size distribution among the different forms (e.g. ions, molecules and mineral particles) in selected metal-enriched Boreal river and estuarine systems by utilising filtration techniques and geochemical modelling. On the basis of the spatial physicochemical patterns found, the fractionation and complexation processes of elements (mainly related to input of humic matter and pH-change) were examined. Dissolved (<1 kDa), colloidal (1 kDa-0.45 μm) and particulate (>0.45 μm) size fractions of sulfate, organic carbon (OC) and 44 metals/metalloids were investigated in the extremely acidic Vörå River system and its estuary in W Finland, and in four river systems in SW Finland (Sirppujoki, Laajoki, Mynäjoki and Paimionjoki), largely affected by soil erosion and acid sulfate (AS) soils. In addition, geochemical modelling was used to predict the formation of free ions and complexes in these investigated waters. One of the most important findings of this study is that the very large amounts of metals known to be released from AS soils (including Al, Ca, Cd, Co, Cu, Mg, Mn, Na, Ni, Si, U and the lanthanoids) occur and can prevail mainly in toxic forms throughout acidic river systems; as free ions and/or sulfate-complexes. This has serious effects on the biota and especially dissolved Al is expected to have acute effects on fish and other organisms, but also other potentially toxic dissolved elements (e.g. Cd, Cu, Mn and Ni) can have fatal effects on the biota in these environments. In upstream areas that are generally relatively forested (higher pH and contents of OC) fewer bioavailable elements (including Al, Cu, Ni and U) may be found due to complexation with the more abundantly occurring colloidal OC. In the rivers in SW Finland total metal concentrations were relatively high, but most of the elements occurred largely in a colloidal or particulate form and even elements expected to be very soluble (Ca, K, Mg, Na and Sr) occurred to a large extent in colloidal form. According to geochemical modelling, these patterns may only to a limited extent be explained by in-stream metal complexation/adsorption. Instead there were strong indications that the high metal concentrations and dominant solid fractions were largely caused by erosion of metal bearing phyllosilicates. A strong influence of AS soils, known to exist in the catchment, could be clearly distinguished in the Sirppujoki River as it had very high concentrations of a metal sequence typical of AS soils in a dissolved form (Ba, Br, Ca, Cd, Co, K, Mg, Mn, Na, Ni, Rb and Sr). In the Paimionjoki River, metal concentrations (including Ba, Cs, Fe, Hf, Pb, Rb, Si, Th, Ti, Tl and V; not typical of AS soils in the area) were high, but it was found that the main cause of this was erosion of metal bearing phyllosilicates and thus these metals occurred dominantly in less toxic colloidal and particulate fractions. In the two nearby rivers (Laajoki and Mynäjoki) there was influence of AS soils, but it was largely masked by eroded phyllosilicates. Consequently, rivers draining clay plains sensitive to erosion, like those in SW Finland, have generally high background metal concentrations due to erosion. Thus, relying on only semi-dissolved (<0.45 μm) concentrations obtained in routine monitoring, or geochemical modelling based on such data, can lead to a great overestimation of the water toxicity in this environment. The potentially toxic elements that are of concern in AS soil areas will ultimately be precipitated in the recipient estuary or sea, where the acidic metalrich river water will gradually be diluted/neutralised with brackish seawater. Along such a rising pH gradient Al, Cu and U will precipitate first together with organic matter closest to the river mouth. Manganese is relatively persistent in solution and, thus, precipitates further down the estuary as Mn oxides together with elements such as Ba, Cd, Co, Cu and Ni. Iron oxides, on the contrary, are not important scavengers of metals in the estuary, they are predicted to be associated only with As and PO4.

Continuous Counter-current Solvent Extraction of Magnesium and Calcium from Lithium-rich Brine

Solvent extraction of calcium and magnesium impurities from a lithium-rich brine (Ca ~ 2,000 ppm, Mg ~ 50 ppm, Li ~ 30,000 ppm) was investigated using a continuous counter-current solvent extraction mixer-settler set-up. The literature review includes a general review about resources, demands and production methods of Li followed by basics of solvent extraction. Experimental section includes batch experiments for investigation of pH isotherms of three extractants; D2EHPA, Versatic 10 and LIX 984 with concentrations of 0.52, 0.53 and 0.50 M in kerosene respectively. Based on pH isotherms LIX 984 showed no affinity for solvent extraction of Mg and Ca at pH ≤ 8 while D2EHPA and Versatic 10 were effective in extraction of Ca and Mg. Based on constructed pH isotherms, loading isotherms of D2EHPA (at pH 3.5 and 3.9) and Versatic 10 (at pH 7 and 8) were further investigated. Furthermore based on McCabe-Thiele method, two extraction stages and one stripping stage (using HCl acid with concentration of 2 M for Versatic 10 and 3 M for D2EHPA) was practiced in continuous runs. Merits of Versatic 10 in comparison to D2EHPA are higher selectivity for Ca and Mg, faster phase disengagement, no detrimental change in viscosity due to shear amount of metal extraction and lower acidity in stripping. On the other hand D2EHPA has less aqueous solubility and is capable of removing Mg and Ca simultaneously even at higher Ca loading (A/O in continuous runs > 1). In general, shorter residence time (~ 2 min), lower temperature (~23 °C), lower pH values (6.5-7.0 for Versatic 10 and 3.5-3.7 for D2EHPA) and a moderately low A/O value (< 1:1) would cause removal of 100% of Ca and nearly 100% of Mg while keeping Li loss less than 4%, much lower than the conventional precipitation in which 20% of Li is lost.