Search results for "Phenol"
showing 3 items of 2273 documents
Application of molecular imprinted polymers for selective solid phase extraction of bisphenol A
2016
Selective molecularly imprinted polymers (MIPs) with bisphenol A as template were synthesized using the non-covalent imprinting approach. MIPs were prepared using thermally initiated polymerization with 1,1’-azobis(cyclohexanecarbonitryle) (ACHN) as initiator and ethylene glycol dimethacrylate (EDMA) as a cross-linking agent. The tested functional monomers included methacrylic acid, acrylamide, and 4-vinylpyridine. The selectivity of the BPA-MIP for the solid phase extraction of bisphenol A was tested in samples containing other related alkylphenols. The polymers prepared in acetonitrile using methacrylic acid or acrylamide as monomer showed the highest selectivity towards target analyte (t…
Microgastrinae (Hymenoptera: Braconidae) in the Forest State of Artikutza (Navarra: Spain): Diversity and Community Structure
2013
Microgastrinae is one of the largest subfamilies of the Braconidae with about 2,000 described species worldwide. These wasps are of enormous ecological interest due to their role in controlling the caterpillar populations. This study analyses diversity and community structure within the Microgastrinae in the Artikutza Forest, located in the Peñas de Aia Natural Park, western Pyrenees, Spain. The specimens were collected in two different habitats: mixed forest and beech forest. A total of 524 specimens, belonging to nine separate genera and 27 species were captured. Alpha, beta and gamma diversity were analyzed. Additionally, the relationship between Microgastrinae phenology and climatic con…
The Eurasian spoonbill Platalea leucorodia in Sicily between 1972 and 2018, distribution and ecology
2020
The observations of the Eurasian spoonbill made in Sicily between 1972 and 2018 were collected and analyzed. The presences, initially scarce and referred to a few sites, have consolidated over time, and gradually have affected an increasing number of sites. The observations were concentrated in the coastal salt pans and exsalt pans systems, secondarily in the mouths and in inland waters, below 100 m a.s.l.. The greatest number of Eurasian spoonbill was found in the migration period, both post and pre-reproductive; in the summer the lowest values. The average number of birds per flock, compared to subsequent years, from November to January did not vary significantly, while it was variable in…