T he distribution o f nitrification has been m easured with the 111 '( ( ) ; incorporation m ethod in the Seine River and its estuary during sum m er conditions. T he Seine River below Paris receives large am ounts o f am m onium through w astewater discharge. In the river itself, this am m onium is only slowly nitrified, while in the estuary nitrification is rap id and com plete. We show that ...

In this paper, we introduce a modified interpretation of the water activity presented in Springer et al. [T.E. Springer, T.A. Zawodzinski, S. ottesfeld, Polymer electrolyte fuel cell model, J. Electrochem. Soc. 138 (8) (1991) 2334–2342]. The modification directly affects the membrane ater transport between the anode and the cathode (two electrodes) of the polymer electrolyte membrane (PEM) fuel...

Though iron is fourth in abundance in the earth crust it is not readily available to many m icroorga­ nisms: In the early days of earth life developed in a reductive atm osphere where iron necessary for many physiological processes was abundant in its divalent form. Fe2+-salts are sufficiently w ater soluble to provide an adequate supply of this elem ent to the cells. But as a consequence of th...

Previous work has shown that captive female cowbirds, Molothrus ater, can influence the outcome of male song development by affecting retention or deletion of song elements and by stimulating improvization. Here we looked for evidence of female influence during the process of learning, as males progress from subsong to plastic song to stereotyped song. In a longitudinal study, we measured the r...

Types of Rhyparochromidae (Hemiptera: Heteroptera: Lygaeoidea) species described by Carl Peter Thunberg, deposited in the Museum of Evolution (formerly Zoologiska Institut), Uppsala University, Uppsala, Sweden, were reexamined and the taxonomic and nomenclatural problems that existed among those species discussed and resolved as required. Lectotypes are designated for Cimex caffer Thunberg, 178...

Four new species of the coral-associated gobiid genus Gobiodon were discovered in the Red Sea. Although several of these species are common not only in the Red Sea but also in the Indian and western Pacific Ocean, they have not been described before. Detailed descriptions of the four species are based on morphological and molecular genetic (mitochondrial 12s and 16s rRNA) investigations. The ne...

This study was carried out in order to determine the predator and parasitoid species that feed on soft scale insect (Hemiptera: Coccidae) orchards of Diyarbakır Elazığ Provinces Turkiye 2017 2018. Visual identification rearing methods were used. Eight predatorory belonging families Coccinellidae (4) Cybocephalidae (1) (Coleoptera), Forficulidae (2) (Dermaptera), Chrysopidae (Neuroptera), detect...