| 1. |
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| 2. |
- Baburin, A., et al.
(författare)
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Avoidable mortality in Estonia : exploring the differences in life expectancy between Estonians and non-Estonians in 2005-2007
- 2011
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Ingår i: Public Health. - : Elsevier BV. - 0033-3506 .- 1476-5616. ; 125:11, s. 754-762
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Tidskriftsartikel (refereegranskat)abstract
- Objectives: A considerable increase in social inequalities in mortality was observed in Eastern Europe during the post-communist transition. This study evaluated the contribution of avoidable causes of death to the difference in life expectancy between Estonians and non-Estonians in Estonia. Study design: Descriptive study. Methods: Temporary life expectancy (TLE) was calculated for Estonian and non-Estonian men and women aged 0-74 years in 2005-2007. The ethnic TLE gap was decomposed by age and cause of death (classified as preventable or treatable). Results: The TLE of non-Estonian men was 3.53 years less than that of Estonian men, and the TLE of non-Estonian women was 1.36 years less than that of Estonian women. Preventable causes of death contributed 2.19 years to the gap for men and 0.78 years to the gap for women, while treatable causes contributed 0.67 and 0.33 years, respectively. Cardiorespiratory conditions were the major treatable causes of death, with ischaemic heart disease alone contributing 0.29 and 0.08 years to the gap for men and women, respectively. Conditions related to alcohol and substance use represented the largest proportion of preventable causes of death. Conclusions: Inequalities in health behaviours underlie the ethnic TLE gap in Estonia, rather than inequalities in access to health care or the quality of health care. Public health interventions should prioritize primary prevention aimed at alcohol and substance use, and should be implemented in conjunction with wider social policy measures
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| 3. |
- Baburin, Igor A, et al.
(författare)
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Hydrogen adsorption by perforated graphene
- 2015
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Ingår i: International journal of hydrogen energy. - : Elsevier. - 0360-3199 .- 1879-3487. ; 40:20, s. 6594-6599
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Tidskriftsartikel (refereegranskat)abstract
- We performed a combined theoretical and experimental study of hydrogen adsorption in graphene systems with defect-induced additional porosity. It is demonstrated that perforation of graphene sheets results in increase of theoretically possible surface areas beyond the limits of ideal defect-free graphene (∼2700 m2/g) with the values approaching ∼5000 m2/g. This in turn implies promising hydrogen storage capacities up to 6.5 wt% at 77 K, estimated from classical Grand canonical Monte Carlo simulations. Hydrogen sorption was studied for the samples of defected graphene with surface area of ∼2900 m2/g prepared using exfoliation of graphite oxide followed by KOH activation. The BET surface area of studied samples thus exceeded the value of single-layered graphene. Hydrogen uptake measured at 77 K and 296 K amounts to 5.5 wt% (30 bar) and to 0.89 wt% (120 bar), respectively.
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| 4. |
- Debatin, Franziska, et al.
(författare)
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An Isoreticular Family of Microporous Metal-Organic Frameworks Based on Zinc and 2-Substituted Imidazolate-4-amide-5-imidate : Syntheses, Structures and Properties
- 2012
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Ingår i: Chemistry - A European Journal. - : Wiley. - 0947-6539 .- 1521-3765. ; 18:37, s. 11630-11640
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Tidskriftsartikel (refereegranskat)abstract
- We report on a new series of isoreticular frameworks based on zinc and 2-substituted imidazolate-4-amide-5-imidate (IFP-14, IFP=imidazolate framework Potsdam) that form one-dimensional, microporous hexagonal channels. Varying R in the 2-substitued linker (R=Me (IFP-1), Cl (IFP-2), Br (IFP-3), Et (IFP-4)) allowed the channel diameter (4.01.7 angstrom), the polarisability and functionality of the channel walls to be tuned. Frameworks IFP-2, IFP-3 and IFP-4 are isostructural to previously reported IFP-1. The structures of IFP-2 and IFP-3 were solved by X-ray crystallographic analyses. The structure of IFP-4 was determined by a combination of PXRD and structure modelling and was confirmed by IR spectroscopy and 1H MAS and 13C CP-MAS NMR spectroscopy. All IFPs showed high thermal stability (345400?degrees C); IFP-1 and IFP-4 were stable in boiling water for 7 d. A detailed porosity analysis was performed on the basis of adsorption measurements by using various gases. The potential of the materials to undergo specific interactions with CO2 was investigated by measuring the isosteric heats of adsorption. The capacity to adsorb CH4 (at 298 K), CO2 (at 298 K) and H2 (at 77 K) at high pressure were also investigated. In situ IR spectroscopy showed that CO2 is physisorbed on IFP-14 under dry conditions and that both CO2 and H2O are physisorbed on IFP-1 under moist conditions.
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| 5. |
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| 6. |
- Jiang, K., et al.
(författare)
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Interfacial Approach toward Benzene-Bridged Polypyrrole Film–Based Micro-Supercapacitors with Ultrahigh Volumetric Power Density
- 2020
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Ingår i: Advanced Functional Materials. - : Wiley. - 1616-301X .- 1616-3028. ; 30:7
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Tidskriftsartikel (refereegranskat)abstract
- 2D soft nanomaterials are an emerging research field due to their versatile chemical structures, easily tunable properties, and broad application potential. In this study, a benzene‐bridged polypyrrole film with a large area, up to a few square centimeters, is synthesized through an interfacial polymerization approach. As‐prepared semiconductive films exhibit a bandgap of ≈2 eV and a carrier mobility of ≈1.5 cm2 V−1 s−1, inferred from time‐resolved terahertz spectroscopy. The samples are employed to fabricate in‐plane micro‐supercapacitors (MSCs) by laser scribing and exhibit an ultrahigh areal capacitance of 0.95 mF cm−2, using 1‐ethyl‐3‐methylimidazolium tetrafluoroborate ([EMIM][BF4]) as an electrolyte. Importantly, the maximum energy and power densities of the developed MSCs reach values up to 50.7 mWh cm−3 and 9.6 kW cm−3, respectively; the performance surpassing most of the 2D material‐based MSCs is reported to date.
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| 7. |
- Klechikov, Alexey, et al.
(författare)
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Hydrogen storage in high surface area graphene scaffolds
- 2015
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Ingår i: Chemical Communications. - : Royal Society of Chemistry. - 1359-7345 .- 1364-548X. ; 51:83, s. 15280-15283
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Tidskriftsartikel (refereegranskat)abstract
- Using an optimized KOH activation procedure we prepared highly porous graphene scaffold materials with SSA values up to 3400 m2 g−1 and a pore volume up to 2.2 cm3 g−1, which are among the highest for carbon materials. Hydrogen uptake of activated graphene samples was evaluated in a broad temperature interval (77–296 K). After additional activation by hydrogen annealing the maximal excess H2 uptake of 7.5 wt% was obtained at 77 K. A hydrogen storage value as high as 4 wt% was observed already at 193 K (120 bar H2), a temperature of solid CO2, which can be easily maintained using common industrial refrigeration methods.
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| 8. |
- Klechikov, Alexey, et al.
(författare)
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Multilayered intercalation of 1-octanol into Brodie graphite oxide
- 2017
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Ingår i: Nanoscale. - : Royal Society of Chemistry (RSC). - 2040-3364 .- 2040-3372. ; 9:20, s. 6929-6936
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Tidskriftsartikel (refereegranskat)abstract
- Multilayered intercalation of 1-octanol into the structure of Brodie graphite oxide (B-GO) was studied as a function of temperature and pressure. Reversible phase transition with the addition/removal of one layer of 1-octanol was found at 265 K by means of X-ray Diffraction (XRD) and Differential Scanning Calorimetry (DSC). The same transition was observed at ambient temperature upon a pressure increase above 0.6 GPa. This transition was interpreted as an incongruent melting of the low temperature/high pressure B-GO intercalated structure with five layers of 1-octanol parallel to GO sheets (L-solvate), resulting in the formation of a four-layered structure that is stable under ambient conditions (A-solvate). Vacuum heating allows the removal of 1-octanol from the A-solvate layer by layer, while distinct sets of (00 l) reflections are observed for three-, two-, and one-layered solvate phases. Step by step removal of the 1-octanol layers results in changes of distance between graphene oxide planes by similar to 4.5 angstrom. This experiment proved that both L- and A-solvates are structures with layers of 1-octanol parallel to GO planes. Unusual intercalation with up to five distinct layers of 1-octanol is remarkably different from the behaviour of small alcohol molecules (methanol and ethanol), which intercalate B-GO structure with only one layer under ambient conditions and a maximum of two layers at lower temperatures or higher pressures. The data presented in this study make it possible to rule out a change in the orientation of alcohol molecules from parallel to perpendicular to the GO planes, as suggested in the 1960s to explain larger expansion of the GO lattice due to swelling with larger alcohols.
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| 9. |
- Leinsalu, Mall, 1958-, et al.
(författare)
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Economic fluctuations and urban-rural differences in educational inequalities in mortality in the Baltic countries and Finland in 2000-2015 : a register-based study
- 2020
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Ingår i: International Journal for Equity in Health. - : BioMed Central. - 1475-9276. ; 19:1
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Tidskriftsartikel (refereegranskat)abstract
- We examined urban-rural differences in educational inequalities in mortality in the Baltic countries (Estonia, Latvia, Lithuania) and Finland in the context of macroeconomic changes. Educational inequalities among 30-74 year olds were examined in 2000-2003, 2004-2007, 2008-2011 and 2012-2015 using census-linked longitudinal mortality data. We estimated age-standardized mortality rates and the relative and slope index of inequality. Overall mortality rates were larger in rural areas except among Finnish women. Relative educational inequalities in mortality were often larger in urban areas among men but in rural areas among women. Absolute inequalities were mostly larger in rural areas excepting Finnish men. Between 2000-2003 and 2012-2015 relative inequalities increased in most countries while absolute inequalities decreased except in Lithuania. In the Baltic countries the changes in both relative and absolute inequalities tended to be more favorable in urban areas; in Finland they were more favorable in rural areas. The overall pattern changed during the reccessionary period from 2004-2007 to 2008-2011 when relative inequalities often diminished or the increase slowed, while the decrease in absolute inequalities accelerated with larger improvements observed in urban areas. Despite substantial progress in reducing overall mortality rates in both urban and rural areas in all countries, low educated men and women in rural areas in the Baltic countries are becoming increasingly disadvantaged in terms of mortality reduction.
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| 10. |
- Leinsalu, Mall, 1958-, et al.
(författare)
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Macroeconomic fluctuations and educational inequalities in suicide mortality among working-age men in the Baltic countries and Finland in 2000–2015 : A register-based study
- 2020
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Ingår i: Journal of Psychiatric Research. - : Elsevier. - 0022-3956 .- 1879-1379. ; 131, s. 138-143
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Tidskriftsartikel (refereegranskat)abstract
- Introduction: In the 2000s, the Baltic countries experienced unprecedented economic growth followed by a deep recession. This study aimed to examine changes and educational inequalities in suicide mortality among working-age men in the Baltic countries and Finland in relation to macroeconomic fluctuations. Methods: We analysed changes in overall suicide mortality and by educational level between the 2000–2003, 2004–2007, 2008–2011 and 2012–2015 periods among men aged 30–64 years using census-linked longitudinal mortality data. We estimated age-standardised mortality rates, mortality rate ratios (Poisson regression), the relative index of inequality and slope index of inequality. Results: Overall suicide mortality fell markedly from 2000–2003 to 2004–2007. The decline was largest among high educated men in the Baltic countries and among middle and low educated men in Finland. From 2004–2007 to 2008–2011, the positive trend slowed and while suicide mortality continued to fall among middle and low educated men, it increased somewhat among high educated men in all Baltic countries. In Finland, suicide mortality decreased among the high educated and increased slightly among low educated men. Conclusions: In the Baltic countries, lower educated men had a smaller decline in suicide mortality than higher educated men during a period of rapid economic expansion, however, they were not more disadvantaged during the recession, possibly because of being less exposed to financial loss. Consequently, relative inequalities in suicide mortality may increase during economic booms and decrease during recessions.
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