Advanced tools for molecular characterization of bio-based and biodegradable polymers
Anal Bioanal Chem. 2024 Mar 22. doi: 10.1007/s00216-024-05255-3. Online ahead of print.ABSTRACTBio-based and biodegradable materials play a vital role in a sustainable and green economy. These materials must exhibit properties that are similar to or better than the properties of oil- or coal-based materials and require sophisticated synthesis technologies and detailed knowledge of structure-property correlations. For comprehensive molecular structure elucidation, advanced analytical methods, including coupled and hyphenated techniques that combine advanced fractionation and information-rich spectroscopic detectors, are an ...
Source: Analytical and Bioanalytical Chemistry - March 22, 2024 Category: Chemistry Authors: Ndumiso Sibanda Helen Pfukwa Paul Eselem Bungu Harald Pasch Source Type: research
The effect of anaerobic digestate as an organic soil fertilizer on the diversity and structure of the indigenous soil microbial and nematode communities
This study addresses how anaerobic digestate modifies soil health when combined with a common chemical fertilizer. Attention was given to soil microbes and, a neglected but of paramount importance soil taxonomic group, soil nematodes. A mesocosm experiment was set up in order to assess the soil's microbial and nematode community. The results demonstrated that the microbial diversity was not affected by the different fertilization regimes, although species richness increased after digestate and mixed fertilization. The composition and abundance of nematode community did not respond to any treatment. Mixed fertilization nota...
Source: Environmental Science and Pollution Research International - March 22, 2024 Category: Environmental Health Authors: Charitini Nikolaidou Magkdi Mola Spiros Papakostas Vassilis G Aschonitis Nikolaos Monokrousos Panagiotis G Kougias Source Type: research
Ammonia distribution and ecological risk assessment in nine fresh lakes in China
This study investigated the historical contents of total ammonia nitrogen (TAN) and unionized ammonia molecules (NH3) in nine fresh lakes in China during 2014-2022. Three different classification methods (flood season, season, and geographical distribution) were used to analyze the concentration variation of TAN and NH3. The concentration of TAN first decreased and then increased in the flood season, showing a lower concentration in summer and a higher concentration in winter. The variation trend of NH3 was in an opposite way with TAN. Correlation analysis between ammonia and 10 water quality parameters and 4 pollution emi...
Source: Environmental Science and Pollution Research International - March 22, 2024 Category: Environmental Health Authors: Jingjing Luo Jiaqi Wang Zhengtao Liu Jiawen Zhang Cong Zhang Jiayin Xi Xiaonan Wang Source Type: research
Efficient synthesis of the 2-aminoimidazolium-bridged diguanosyl intermediate for nonenzymatic primer extension
Canadian Journal of Chemistry, Ahead of Print. Nonenzymatic genome replication has yet to be demonstrated experimentally. Recently, studies on the nonenzymatic primer extension mechanism mediated by nucleoside 5 ′-monophosphates (NMPs) activated with 2-aminoimidazole (2AI) have revealed that imidazolium-bridged dinucleotide intermediates (N*N) are responsible for the bulk of the chemical copying process. As a result, an efficacious synthetic pathway for producing these substrates is desirable. Standard de hydrative redox reaction between NMPs and 2AI can produce N*N in high yields for all homodimers, apart from riboguano...
Source: Canadian Journal of Chemistry - March 21, 2024 Category: Chemistry Authors: Scott R. Sammons James D. Robinson Derek K. O'Flaherty Source Type: research
Children as next of kin's experiences, practices, and voice in everyday life: a systematic review of studies with Norwegian data (2010-2022)
Conclusions: There is a strong need for more knowledge and competence on the situation and needs of these children when it comes to professionals, parents and the public. Public health initiatives are needed to honour their agency and recognise their contributions in present time to prevent psychosocial problems later in life.PMID:38506846 | DOI:10.1177/14034948241232040 (Source: Scandinavian Journal of Public Health)
Source: Scandinavian Journal of Public Health - March 20, 2024 Category: International Medicine & Public Health Authors: Borgunn Ytterhus Marit Hafting Vibecke Ulv ær Vallesverd Eli Marie Wiig Ellen Katrine Kallander Marianne Vibeke Trondsen Source Type: research
