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Mixtures of epoxy resins in the presence of epoxy hyperbranched polymers (HBP), in the range of 5-15 wt%, were investigated in the cationic photocuring process. No significant differences in rate of polymerization or final epoxy groups conversion were observed. At low concentration, HBP acts as plasticizer and causes a decrease of the glass transition temperature of the epoxy matrix and of the E'
The cationic photopolymerization of oxetane-based systems containing silicon monomers was investigated. For this purpose, three new silicon-containing oxetane monomers were synthesized through a simple and straightforward synthetic method. The silicon-containing monomers were added to a typical oxetane resin, 3,3-[oxydi(methylene)]bis(3-ethyloxetane), in concentrations of 1-5 wt %. They exploited
New difunctional fluoro-epoxide monomers were synthesized starting by allylation of the corresponding fluorinated diols and subsequent epoxidation. The new products were photocured, in the presence of triphenylsulphonium hexafluoroantimonate as photoinitiator; a higher reactivity of the fluorinated monomers was evidenced with respect to a typical UV curable diepoxy resin, hexanedioldiglycidyl ethe
Background: Middle Eastern immigrants represent a growing population in Sweden today. This group are at higher risk for type 2 diabetes than the native population, but are also shown to exhibit unique properties; despite an abundance in traditional cardiometabolic risk factors such as obesity, dearranged blood lipids and diminished physical acitivity, this group seem to exhibit lower blood pressur
A process for production of an oxetane, which process comprises subjecting an alcohol having two or more hydroxyl groups to reaction with a carbamide at a molar ratio employing 1-2 moles of said carbamide on 1-2 moles of said alcohol. The alcohols preferably have at least one 1,3-diol grouping. The reaction is carried out in the presence of at least one catalyst promoting and/or initiating transca
A process for synthesis of a polymeric polyalcohol substantially and preferably built up form polyester units and composed of a monomeric or polymeric initiator molecule to which at least one dentritic branch (dendron) consisting of a number of branching generations is added. The branching generations comprise a polymericor monomeric branching chain extender having three reactive functions of whic
Formaldehyde and formate reduced process for preparation of a di, tri or polyalcohol from formaldehyde and a second aldehyde in the presence of an alkaline catalyst. The process comprises an aldol condensation yielding a methylolaldehyde and a subsequent crossed Cannizzaro reaction yielding said di, tri or polyalcohol and formate. The Cannizzaro reaction comprises reacting said methylolaldehyde wi
Far from being hardwired to flee fire, some animals use it to their own ends, helping us understand our own pyrocognition
Ferdinand Tönnies sociologi är en ursociologi – för att inte säga själva ursociologin. Hans sociologi börjar och slutar med begreppen Gemeinschaft och Gesellschaft, ungefär gemenskap och samhälle. Det är begrepp som allt sedan den tidiga sociologin varit grundläggande för disciplinens utveckling. Det är också begrepp som är djupt rotade i erfarenheten av att vara en modern människa, erfarenheten a
Sociologi är läran om samhället, om människan som social varelse, om hur individen relaterar till sig själv och till andra. Sociologin analyserar hur och på vilka villkor människan formar samhället och omvänt hur samhället och gruppen formar människan i tid och rum. Under 1800-talet utmejslades sociologin först som allmänt ämne och så småningom som en vetenskaplig disciplin vid universiteten med s
Charlotte Perkins Gilman var en amerikansk författare, föreläsare ochdebattör. Hon är känd för att ha utarbetat en begreppsapparat kringdet vi i dag kallar genus, men hennes sociologi innefattar även ekonomisksociologi och kultursociologi. Hon vigde sitt liv åt offentlig sociologi,att göra sociologisk kunskap tillgänglig för allmänheten och varaen stark röst i det dåtida intellektuella samtalet i
Människan gör samhället – formar, utvecklar, bevarar. Men samhället gör också människan – människan formas och utvecklas i och genom samhället. Detta är den klassiska sociologins stora insikt. Sociologins klassiker – upptäckter och återupptäckter presenterar tjugotvå sociologiska tänkare som med stor spännvidd varierar denna grundläggande sociologiska insikt som i dag äger större giltighet än någo
Fossil fuel subsidy reform is a sensible climate change mitigation option, yet government support for fossil fuel production and consumption remains high. International efforts to phase out fossil fuel subsidies can be strengthened by distinguishing between different subsidies, taking into account their climate impacts and the feasibility of reform.
• Climate finance coordination challenges reflect political differences, including divergent interests among ministries involved in the governance of multilateral climate funds.• Differences in the histories and governance of the Climate Investment Funds (CIF) and Green Climate Fund (GCF) – two key multilateral climate funds – shape debate on their respective advantages and future roles.• The mult
