Matches in SemOpenAlex for { <https://semopenalex.org/work/W2047777712> ?p ?o ?g. }
Showing items 1 to 98 of
98
with 100 items per page.
- W2047777712 endingPage "710" @default.
- W2047777712 startingPage "709" @default.
- W2047777712 abstract "The impact of cyanobacteria Gloeocapsa sp. on calcium carbonate precipitation has been examined by combining physico-chemical macroscopic and in-situ microscopic techniques. For this, Ca adsorption and assimilation and kinetic experiments were used to assess the existence of the metabolic process responsible for CaCO3 mineralization by Gloeocapsa sp. Experimental products were characterized by Scanning and Transmission Electron Microscopy (SEM and TEM) imaging, XRD analyses, coupled with Confocal Laser Scanning Microscopy (CLSM) and Raman micro-spectroscopy. Ca carbonate precipitation experiments were performed at an initial pH of 7.8 to 9.4 and 25 °C in supersaturated solutions (Ωcalcite = 1.5 to 150) in the presence of active cyanobacterial cells. During cyanobacterial photosynthesis, the solution pH increased up to 9.5–10.8 after the first 5–10 days of growth, the Ca concentration decreased and the supersaturation index attained a maximum followed by a gradual decrease due to progressive CaCO3 precipitation. Ca adsorption at the surface of live and inactivated Gloeocapsa sp. cells and Ca intracellular assimilation during cell growth were measured as a function of pH and Ca concentration in solution. The contribution of surface adsorption and intracellular uptake to total Ca removal from solution due to biocalcification does not exceed 10%. The presence of calcium carbonate, identified as calcite using Raman spectroscopy, on active Gloeocapsa sp. surfaces and in the vicinity of bacterial cell surfaces was evidenced using SEM. TEM and CLSM demonstrated cyanobacterial cell encrustation by CaCO3 precipitated in the form of nano-spheres adjacent to the cell surface. In contrast to other previously investigated calcifying bacteria, no cellular protection mechanism against Ca2 + adsorption and subsequent carbonate precipitation has been demonstrated for Gloeocapsa sp. This is most likely linked to the specific cellular organization of this species, which involves several cells in one single capsule. As such, planktonic cultures of Gloeocapsa sp. exhibit significant calcifying potential, making them important CO2-fixing microorganisms for both paleo-environmental reconstructions and technological applications." @default.
- W2047777712 created "2016-06-24" @default.
- W2047777712 creator A5014425160 @default.
- W2047777712 creator A5018760953 @default.
- W2047777712 creator A5047567046 @default.
- W2047777712 creator A5065244911 @default.
- W2047777712 creator A5081578833 @default.
- W2047777712 creator A5088583593 @default.
- W2047777712 date "2007-08-01" @default.
- W2047777712 modified "2023-09-26" @default.
- W2047777712 title "Syndrome de Cronkhite et Canada" @default.
- W2047777712 cites W2056542423 @default.
- W2047777712 cites W2170851260 @default.
- W2047777712 cites W2398680018 @default.
- W2047777712 cites W2473629667 @default.
- W2047777712 doi "https://doi.org/10.1016/s0151-9638(07)91845-1" @default.
- W2047777712 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/17925707" @default.
- W2047777712 hasPublicationYear "2007" @default.
- W2047777712 type Work @default.
- W2047777712 sameAs 2047777712 @default.
- W2047777712 citedByCount "0" @default.
- W2047777712 crossrefType "journal-article" @default.
- W2047777712 hasAuthorship W2047777712A5014425160 @default.
- W2047777712 hasAuthorship W2047777712A5018760953 @default.
- W2047777712 hasAuthorship W2047777712A5047567046 @default.
- W2047777712 hasAuthorship W2047777712A5065244911 @default.
- W2047777712 hasAuthorship W2047777712A5081578833 @default.
- W2047777712 hasAuthorship W2047777712A5088583593 @default.
- W2047777712 hasConcept C107054158 @default.
- W2047777712 hasConcept C120665830 @default.
- W2047777712 hasConcept C121332964 @default.
- W2047777712 hasConcept C127413603 @default.
- W2047777712 hasConcept C13965031 @default.
- W2047777712 hasConcept C146088050 @default.
- W2047777712 hasConcept C150394285 @default.
- W2047777712 hasConcept C153294291 @default.
- W2047777712 hasConcept C159985019 @default.
- W2047777712 hasConcept C171250308 @default.
- W2047777712 hasConcept C178790620 @default.
- W2047777712 hasConcept C185592680 @default.
- W2047777712 hasConcept C192562407 @default.
- W2047777712 hasConcept C199289684 @default.
- W2047777712 hasConcept C200447597 @default.
- W2047777712 hasConcept C26771246 @default.
- W2047777712 hasConcept C2778039128 @default.
- W2047777712 hasConcept C2779669040 @default.
- W2047777712 hasConcept C2780191791 @default.
- W2047777712 hasConcept C40003534 @default.
- W2047777712 hasConcept C42360764 @default.
- W2047777712 hasConcept C523546767 @default.
- W2047777712 hasConcept C54355233 @default.
- W2047777712 hasConcept C86803240 @default.
- W2047777712 hasConceptScore W2047777712C107054158 @default.
- W2047777712 hasConceptScore W2047777712C120665830 @default.
- W2047777712 hasConceptScore W2047777712C121332964 @default.
- W2047777712 hasConceptScore W2047777712C127413603 @default.
- W2047777712 hasConceptScore W2047777712C13965031 @default.
- W2047777712 hasConceptScore W2047777712C146088050 @default.
- W2047777712 hasConceptScore W2047777712C150394285 @default.
- W2047777712 hasConceptScore W2047777712C153294291 @default.
- W2047777712 hasConceptScore W2047777712C159985019 @default.
- W2047777712 hasConceptScore W2047777712C171250308 @default.
- W2047777712 hasConceptScore W2047777712C178790620 @default.
- W2047777712 hasConceptScore W2047777712C185592680 @default.
- W2047777712 hasConceptScore W2047777712C192562407 @default.
- W2047777712 hasConceptScore W2047777712C199289684 @default.
- W2047777712 hasConceptScore W2047777712C200447597 @default.
- W2047777712 hasConceptScore W2047777712C26771246 @default.
- W2047777712 hasConceptScore W2047777712C2778039128 @default.
- W2047777712 hasConceptScore W2047777712C2779669040 @default.
- W2047777712 hasConceptScore W2047777712C2780191791 @default.
- W2047777712 hasConceptScore W2047777712C40003534 @default.
- W2047777712 hasConceptScore W2047777712C42360764 @default.
- W2047777712 hasConceptScore W2047777712C523546767 @default.
- W2047777712 hasConceptScore W2047777712C54355233 @default.
- W2047777712 hasConceptScore W2047777712C86803240 @default.
- W2047777712 hasIssue "8-9" @default.
- W2047777712 hasLocation W20477777121 @default.
- W2047777712 hasLocation W20477777122 @default.
- W2047777712 hasOpenAccess W2047777712 @default.
- W2047777712 hasPrimaryLocation W20477777121 @default.
- W2047777712 hasRelatedWork W1539840240 @default.
- W2047777712 hasRelatedWork W1971551266 @default.
- W2047777712 hasRelatedWork W2059097202 @default.
- W2047777712 hasRelatedWork W2083846077 @default.
- W2047777712 hasRelatedWork W2186503563 @default.
- W2047777712 hasRelatedWork W2320996122 @default.
- W2047777712 hasRelatedWork W2435842645 @default.
- W2047777712 hasRelatedWork W4297148762 @default.
- W2047777712 hasRelatedWork W2520974643 @default.
- W2047777712 hasRelatedWork W3021100607 @default.
- W2047777712 hasVolume "134" @default.
- W2047777712 isParatext "false" @default.
- W2047777712 isRetracted "false" @default.
- W2047777712 magId "2047777712" @default.
- W2047777712 workType "article" @default.