1,721,244 research outputs found
Biodiversità e biogeografia dei poriferi nel Mediterraneo: stato attuale delle conoscenze.
No full textBiodiversità e biogeografia dei poriferi nel Mediterraneo: stato attuale delle conoscenze
Four new demosponge species from Terra Nova Bay (Ross Sea, Antarctica)
No full textCalcinai, Barbara, Pansini, Maurizio (2000): Four new demosponge species from Terra Nova Bay (Ross Sea, Antarctica). Zoosystema 22 (2): 369-381, DOI: http://doi.org/10.5281/zenodo.575771
Fauna d’Italia. Porifera I. Calcarea, Demospongiae (partim), Hexactinellida, Homoscleromorpha
No full textMicrowave assisted hydrothermal conversion of Ba-exchanged zeolite A into metastable paracelsian
No full textA microwave assisted crystallization of paracelsian, a metastable phase for which no synthetic occurrence is at present reported, was obtained. A sample of thoroughly Ba-exchanged zeolite A was prepared and reacted in alkaline media and hydrothermal conditions under the action of microwaves (frequency 2.45 GHz, irradiation power 1000 W). The alkaline environment was created by using aqueous solutions of LiOH and tetraethylammonium hydroxide. Treatment temperature, reaction time and weight solid/liquid ratio ranged between 150 and 230 degrees C, 40 and 120 min, 115 and 1/40, respectively. The pressure was autogeneous. The action of microwaves appears to strongly enhance the ability of hydrothermal systems to produce highly metastable phases, an important observation
Thermally induced structural and microstructural evolution of barium exchanged zeolite A to celsian
No full textRelationship between sponges and a taxon of obligatory inquilines: the Siliquariid molluscs.
No full textErratum: Two new species of Poecilosclerida (Porifera: Demospongiae) from Terra Nova Bay (Antarctic Sea) (Journal of the Marine Biological Association of the United Kingdom (2011) 91:8 (1709) DOI: 10.1017/S0025315409000915)
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