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Now showing items 4191-4198 of 4198
Enantioselective Addition of Alkynyl Ketones to Nitroolefins Assisted by Bronsted Base/H-Bonding Catalysis
(Wiley, 2019-03-21)
Various sets of enolizable alkynyl ketones (including methyl ynones with α-aryl, α-alkenyl, and α-alkoxy groups) were able to react smoothly with nitroolefins with the assistance of bifunctional Brønsted base/H-bond catalysts ...
α-Hydroxy Ketones as Masked Ester Donors in Brønsted Base-Catalyzed Conjugate Additions to Nitroalkenes
(ChemPubSoc Europe, 2018-02-15)
The Genetic Background of Metabolic Trait Clusters in Children and Adolescents
(Mary Ann Liebert, 2017)
Background: It is well known that metabolic risk factors of cardiovascular diseases are correlated, but the
background of this clustering in children is more poorly known than in adults. Thus, we studied the contribution
of ...
Acute toxicity of zinc and arsenic to the warmwater aquatic oligochaete Branchiura sowerbyi as compared to its coldwater counterpart Tubifex tubifex (Annelida, Clitellata)
(Springer, 2016-07-12)
Purpose This study aimed at evaluating the acute effects of arsenic and zinc to the warmwater aquatic oligochaete Branchiura sowerbyi. Relative sensitivity with the coldwater species Tubifex tubifex was compared. Implications ...
Derivation of sediment Hg quality standards based on ecological assessment in river basins
(Elsevier, 2018-11-28)
The Environmental Quality Standards (EQS) directive was an important improvement of long-term water quality monitoring at the European level, leading to the use of sediments and biota as relevant matrices for assessing ...
Association between birth weight and educational attainment: an individual-based pooled analysis of nine twin cohorts
(BMJ Publishing Group, 2018-05-30)
Background There is evidence that birth weight is
positively associated with education, but it remains
unclear whether this association is explained by familial
environmental factors, genetic factors or the intrauteri ...
Sensitivity of macroinvertebrate indicator taxa to metal gradients in mining areas in Northern Spain
(Elsevier, 2018-04-24)
The study of macroinvertebrate communities using a Reference Condition Approach (RCA) is a powerful tool for detecting the impacts of mining activities due to heavy metal contamination in rivers. However, studies on this ...
Baseline tissue levels of trace metals and metalloids to approach ecological threshold concentrations in aquatic macroinvertebrates
(Elsevier, 2018-04-24)
Within the framework of the European Environmental Quality Standards Directive, the biota was recognized as a suitable matrix for monitoring water quality. In the Nalón River basin (North Spain), a catchment subject to ...