An Update on Inter-Country Differences in Recovery and Utilization of Recycled Paper

The use of recovered paper as raw material in the paper and board industry has increased heavily during recent decades. At the same time, growing environmental awareness has raised the interest in recycling and a more sustainable way of living, at least in high-income countries. This paper combines these topics and explores how economic, demographic and environmental factors have affected the recovery and utilization of recycled paper between 1992 and 2010 in a sample of 70 countries. This study updates and extends the previous research on the topic using panel data and panel data estimation methods. The results confirm the roles of economic determinants but also indicate that concern for the environment impacts the recovery of recycled paper particularly in high-income countries. Moreover, the motives for recycling appear to depend on the income level of a country, which is something that future policies should consider.

Territorium Archangelopolin inter Petroburgum et Vologdam.

[N. 1:1400000].

Stability and properties of cellulose-sodium hydroxide solution systems

Since cellulose is a linear macromolecule it can be used as a material for regenerated cellulose fiber products e.g. in textile fibers or film manufacturing. Cellulose is not thermoformable, thus the manufacturing of these regenerated fibers is mainly possible through dissolution processes preceding the regeneration process. However, the dissolution of cellulose in common solvents is hindered due to inter- and intra-molecular hydrogen bonds in the cellulose chains, and relatively high crystallinity. Interestingly at subzero temperatures relatively dilute sodium hydroxide solutions can be used to dissolve cellulose to a certain extent. The objective of this work was to investigate the possible factors that govern the solubility of cellulose in aqueous NaOH and the solution stability. Cellulose-NaOH solutions have the tendency to form a gel over time and at elevated temperature, which creates challenges for further processing. The main target of this work was to achieve high solubility of cellulose in aqueous NaOH without excessively compromising the solution stability. In the literature survey an overview of the cellulose dissolution is given and possible factors contributing to the solubility and solution properties of cellulose in aqueous NaOH are reviewed. Furthermore, the concept of solution rheology is discussed. In the experimental part the focus was on the characterization of the used materials and properties of the prepared solutions mainly concentrating on cellulose solubility and solution stability.

Concordia eaque inter fratres praecipuè rara

Variantti A.

Comparatio, inter Iphigeniam in Aulide, Euripidis et Racinii 1

Arkit: 1 arkintunnukseton lehti, A-B4 C2. - S. [2] tyhjä.

Comparatio, inter Iphigeniam in Aulide, Euripidis et Racinii 2

Arkit: 1 arkintunnukseton lehti, C3-C4 D-E4. - S. [2] ja [40] tyhjä.

De detegendo capite inter orandum & prophetandum ex I. Cor. XI.v.4

Invokaatio: Σ.Θ.

Comparatio inter eclogam Virgilii quartam et Calpurnii primam

Dedikaatio: Carl Rehbinder.

De communicatione caloris inter fluida commixta examinans

Dedikaatio: Carolus Fridericus Mennander, Nicolaus Hedeen, Johannes Gottleben, Henric Soenck, Pehr Sonck, Abraham Sonck, Johan Rahgo, Margareta Hoeckert född Turowia.

Aphorismi morales, nexum inter legem & officium in statu ordinario et extraordinario brevissime delineantes

Invokaatio: D.D.

De convenientia inter dogmata Nicolai Machiavelli et vitam Oliverii Cromvelli 1

Variantti B.

Concordia eaque inter fratres praecipuè rara

Variantti B.

De convenientia inter dogmata Nicolai Machiavelli et vitam Oliverii Cromvelli 2

Variantti B.