Search results for "Chela"
showing 5 items of 415 documents
Synthesis and characterization of Zwitterionic Zn(II) and Cu(II) coordination compounds with ring-substituted 2,2′-biimidazole derivatives
2016
Zwitterionic coordination compounds with strongly asymmetrical charge distribution were synthesized and characterized. Ring-substituted biimidazoles were used as the primary ligands for Zn and Cu compounds. Formation of Zwitterionic coordination compound was found to be strongly dependent on the pH of the reaction medium as well as on the ring and nitrogen substituents of the ligand. Reaction of the Df-R2biim (Df-R2biim = 2,2′-bi-1R-imidazole-5,5′-dicarboxaldehyde, R = Me, Et or Pr) with ZnCl2 in neutral conditions led to binuclear compounds [Zn2Cl4(Df-R2biim)2] with two bridging ligands (1a–c). Reaction with CuCl2·2H2O gave neutral mononuclear compound [CuCl2(Df-Me2biim)] (1d) with chelati…
Sisubiotus hakaiensis sp. nov. (Tardigrada, Macrobiotidae), a new tardigrade species from Calvert Island (British Columbia, Canada)
2022
Tardigrades reports from British Columbia (Canada) trace back to 1908 and numerous species have been recorded from this region, despite the relatively few published sampling studies. We describe by integrative taxonomy (light microscopy morphology, morphometrics, and DNA sequencing) a new tardigrade species, Sisubiotus hakaiensis sp. nov. from the British Columbia central coast. The new species has been found in moss collected from a vertical rock outcrop near the Hakai Institute Calvert Island Field Station. Sisubiotus hakaiensis sp. nov. differs from all the other known species in the genus by the presence of a labyrinthine layer inside the egg process walls, whereas no consistent differe…
Uusi hengityksen filosofia
2018
Lectio praecursoria 28.9.2018 Hengitys on hyvin harvinainen teema filosofiassa. Aiemmin hengitystä filosofisena kysymyksenä ovat tarkastelleet mm. Luce Irigaray ja David Kleinberg-Levin. Väitöskirjatutkimuksessani Phenomenological Ontology of Breathing tutkin fenomenologisesti hengityksen filosofiaa, so. miten hengittäminen voisi olla filosofinen kysymys ja miten eletty kokemus hengityksestä voisi mahdollisesti avata ja jäsentää meille aivan uuden tavan tehdä filosofiaa. Väitöskirjani lähtökohtana on aiemmin tutkimattomat Maurice Merleau-Pontyn fenomenologiset huomiot hengityksestä. Näiden Merleau-Pontyn hengitystä koskevien huomioiden pohjalta pyrin jäsentämään uuden fenomenologisen käsity…
Cahiers Gaston Bachelard n° 9 : Bachelard, Gonseth, Piaget : L'éducation ouverte
2007
Image verbale, image picturale dans l’œuvre de Bachelard
2012
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