Search results for " Circular"
showing 3 items of 253 documents
ChemInform Abstract: Assignment of the Absolute Configuration and Total Synthesis of (+)-Caripyrin.
2015
The antifungal secondary metabolite (+)-caripyrin was studied by vibrational circular dichroism spectroscopy. Analysis of the recorded data, with the Boltzmann weighted-average of the spectra calculated at the B3LYP/6-311G(d,p) level of theory for all relevant conformers, unequivocally proved the (R,R)-configuration for the dextrorotatory natural product. Based on this finding, a short enantioselective synthesis of (+)-caripyrin was developed.
A different role of taxation. Using fiscal leverage as an incentive to foster regeneration of common goods and improve the performance of public gove…
2019
The paper analysis the possibility of using fiscal leverage as an incentive to foster policy of regeneration of common goods. Regeneration of urban goods and spaces not only shows some points in common with the so-called circular economy, but – trough the role played by private citizens who, by substituting or collaborating with public administrations, participate in reuse of goods and urban spaces – may also be considered as an efficient example of public and private cooperation, aiming to improve the level of well-being of the community. Thus, it may be argued that regeneration and taxation have an, at least partially, coinciding aim. Both pursue a general interest: regeneration in a most…
Biopolymer Recovery from Aerobic Granular Sludge and Conventional Flocculent Sludge in Treating Industrial Wastewater: Preliminary Analysis of Differ…
2022
The recovery of biopolymers from sewage sludge could be a crucial step in implementing circular economy principles in wastewater treatment plants (WWTP). In this frame, the present study was aimed at evaluating the simultaneous production of polyhydroxyalkanoates (PHA) and extracellular polymeric substances (EPS) obtainable from the treatment of agro-industrial wastewater. Two biological enrichment systems, aerobic granular sludge (AGS) and a conventional activated sludge operating as a sequencing batch reactor (SBR), were monitored for 204 and 186 days, respectively. The maximum biopolymers accumulation capacity was close to 0.60 mgPHA-EPS gVSS−1 in the AGS when operating at 3 kgCODm…