Search results for "rauta"

Pääomien leikkauspisteessä : seppäyhteisön erityisasema ja sen kohtalo Strömforsin ja Ramnäsin rautaruukeissa vuosina 1880-1970

2006

Post-communist historians on Ion Antonescu and his authoritarian regime in Romania 1940-1944

2002

Jyväskylä

1898

saatu Timo Meriluodolta

Evidence that steric factors modulate reactivity of tautomeric iron-oxo species in stereospecific alkane C-H hydroxylation

2014

A new iron complex mediates stereospecific hydroxylation of alkyl C-H bonds with hydrogen peroxide, exhibiting excellent efficiency. Isotope labelling studies provide evidence that the relative reactivity of tautomerically related oxo-iron species responsible for the C-H hydroxylation reaction is dominated by steric factors This work has been supported by the European Union (the Erasmus Mundus program), the International Research Training Group Metal Sites in Biomolecules: Structures, Regulation and Mechanisms (www.biometals.eu), and COST Action CM1003. M.C. acknowledges ERC-29910, MINECO of Spain for CTQ2012- 37420-C02-01/BQU and CSD2010-00065, catalan DIUE (2009SGR637) and an ICREA academ…

Tirkistelijöiden historiaa. Lectio Praecursoria 7.11.2014

2015

FM Juuso Marttilan taloushistorian väitöskirja Työ teollistumisen ja arjen rajapintana. Strömforsin ja Ramnäsin rautaruukkiyhteisöt 1880–1950 tarkastettiin 7.11.2014 Jyväskylän yliopistossa. Vastaväittäjänä toimi professori Pertti Haapala Tampereen yliopistosta ja kustoksena professori Jari Ojala Jyväskylän yliopistosta.

Development of iron oxide / activated carbon nanoparticle composite for the removal of Cr(VI), Cu(II) and Cd(II) ions from aqueous solution

2018

Iron oxide (Fe3O4) and iron oxide/activated carbon (Fe3O4/AC) were fabricated by co-precipitation method for the removal of Cr(VI), Cu(II) and Cd(II) ions from aqueous solution in batch mode. These nanoparticles were characterized by BET, FTIR, XRD, SEM/TEM and VSM. The optimum conditions for the removal of ions were pH = 2 for Cr(VI) and 6 for Cu(II) and Cd(II), initial metal ion concentration = 50 mg L−1, nanoparticle dose = 50 mg/10 mL, temperature = 25 ± 1 °C, shaking speed = 180 rpm and contact time = 3 h. The equilibrium data of ions sorption were well described by Langmuir, Freundlich, Redlich-Peterson and Intraparticle Diffusion model. The R2 values obtained by Langmuir model were h…

A data-driven surrogate-assisted evolutionary algorithm applied to a many-objective blast furnace optimization problem

2017

A new data-driven reference vector-guided evolutionary algorithm has been successfully implemented to construct surrogate models for various objectives pertinent to an industrial blast furnace. A total of eight objectives have been modeled using the operational data of the furnace using 12 process variables identified through a principal component analysis and optimized simultaneously. The capability of this algorithm to handle a large number of objectives, which has been lacking earlier, results in a more efficient setting of the operational parameters of the furnace, leading to a precisely optimized hot metal production process. peerReviewed

Symbolinen kyläyhteisö : harvaan asutun maaseudun kunnan paikallisidentiteetti kuntarakenneuudistuksen Suomessa

2014

Tarkastelen pro gradu -tutkielmassani harvaanasutun maaseudun kunnan paikallisidenti- teettiä kuntarakenneuudistuksen ajassa. Tutkimuskohteena oleva Pohjois-Savossa sijaitse- va Rautalampi on hieman alle 3 500 asukkaan kunta, joka on ollut vuosisatoja aikaisemmin ollut 27 myöhemmin siitä irtaantuneen kunnan alueelle ulottuva emäpitäjä. Tutkimuksen tavoitteena on selvittää mistä rautalampilainen paikallisidentiteetti muodostuu ja mille ryhmälle rautalampilainen paikallisidentiteetti on merkityksellinen. Tutkimuksessa käsitel- lään myös paikallisidentiteetin merkitystä jälkiteollisessa Suomessa sekä kuntauudistuksen vaikutusta paikallisidentiteetille. Aineisto on kerätty vuo…

Service Provisioning and User Association for Heterogeneous Wireless Railway Networks

2017

In addition to comforting passengers' journey, the modern railway system is responsible to support a variety of on-board Internet services to meet the passenger's demands on seamless service provisioning. In order to provide wireless access to the train, one idea attracting increasing attention is to deploy a series of track-side access points (TAPs) with high-speed data rates along the rail lines dedicated to the broadband mobile service provisioning on board. Due to the heavy data traffic flushing into the base stations (BSs) of the cellular networks, TAPs act as a complement to the BSs in data delivery. In this paper, we focus on the TAP association problem for service provisioning in a …

Superoxide-driven autocatalytic dark production of hydroxyl radicals in the presence of complexes of natural dissolved organic matter and iron

2020

We introduced superoxide as potassium superoxide (KO2) to artificial lake water containing dissolved organic matter (DOM) without or with introduced ferric iron complexes (DOM-Fe), and monitored the production rate of hydroxyl radicals as well as changes in the absorption and fluorescence properties of DOM. The introduction of KO2 decreased the absorption by DOM but increased the spectral slope coefficient of DOM more with complexed ferric Fe than without it. The introduction of KO2 increased the fluorescence of humic-like components in DOM without introduced ferric Fe but resulted in the loss of fluorescence in DOM with introduced ferric Fe. A single introduction of 13 μmol L−1 KO2 produce…