De knoflookpad is de laatste jaren sterk achteruitgegaan en heeft daarmee de status bedreigd op de Rode lijst gekregen. Omdat optimalisatie van de habitat tot heden nog niet tot het veiligstellen van de knoflookpad heeft geleid zijn door Natuurbalans - Limes Divergens herintroductie en bijplaatsingsprojecten …

Crustaceans that are very common in streams were often used as the testing of water quality standards. Therefore, it is effective to select Crustaceans as an indicator to examine the influence of decreasing water flow. Climate change induced the extremely dry summer in the Netherlands. Water flow decrease …

De auteur beschrijft een aantal artikelen uit het Journal of Chemical Education 2010 die interessant en geschikt zijn voor gebruik in het scheikunde onderwijs. De volgende onderwerpen komen aan de orde: pH, plastic, kauwgum, melamine, logica in de chemie, natriumpolyacrylaat, H+-ion en theromolyse van …

The reaction of the alkyl complexes Cp*2LnCH(SiMe 3)2 (Ln = Y 1-Y, Ce 1-Ce, La 1-La; Cp* = η5-C5Me5) and Me2Si(η 5-C5Me4)2LnCH(SiMe3) 2 (Ln = Ce 5-Ce) with 1-methylalk-2-ynes CH3C≡CR (R = Me 3a, Et 3b, nPr 3c, tBu 3d, SiMe3 3e, Ph 3f, C6H4Me-2 3g, C6H3Me 2-2,6 3h, C6H3iPr2-2,6 3i, C6F5 3j) affords the …

pH-sensitive gels: By using a cyclohexane-based scaffold to which various amino acid based substituents can be connected, low-molecular-weight compounds were obtained that can gelate water at very low concentrations. Their modular design (see picture: AA = amino acid(s), X = hydrophilic substituent, …

The degradation of lactic acid under anoxic conditions was studied in several strains of Lactobacillus buchneri and in close relatives such as Lactobacillus parabuchneri, Lactobacillus kefir, and Lactobacillus hilgardii. Of these lactobacilli, L. buchneri and L. parabuchneri were able to degrade lactic …