Lead Solubility and Mineral Structures of Coprecipitated Lead/Calcium Oxalates

2019 ◽  
Vol 53 (23) ◽  
pp. 13794-13801
Author(s):  
Murray B. McBride ◽  
Sabrina Kelch ◽  
Michael Schmidt ◽  
Yuting Zhou ◽  
Ludmilla Aristilde ◽  
...  
Keyword(s):  
Calcium Oxalates

Weathering of gilding decorations investigated by SR: development and distribution of calcium oxalates in the case of Sant Benet de Bages (Barcelona, Spain)

2007 ◽  
Vol 90 (1) ◽  
pp. 23-33 ◽  
Author(s):  
A. Lluveras ◽  
S. Boularand ◽  
J. Roqué ◽  
M. Cotte ◽  
P. Giráldez ◽  
...  
Keyword(s):  
Calcium Oxalates

Precipitation of calcium oxalates from high ionic strength solutions

1987 ◽  
Vol 80 (1) ◽  
pp. 113-120 ◽  
Author(s):  
Drago Škrtić ◽  
Helga Füredi-Milhofer ◽  
Milenko Marković
Keyword(s):  
Ionic Strength ◽  
High Ionic Strength ◽  
Calcium Oxalates

scholarly journals Characterization of Calcium Oxalates Generated as Biominerals in Cacti

2002 ◽  
Vol 128 (2) ◽  
pp. 707-713 ◽  
Author(s):  
Paula V. Monje ◽  
Enrique J. Baran
Keyword(s):  
Calcium Oxalates

Lichen biomarkers upon heating: a Raman spectroscopic study with implications for extra-terrestrial exploration

2016 ◽  
Vol 16 (1) ◽  
pp. 74-81 ◽  
Author(s):  
I. Miralles ◽  
C. Capel Ferrón ◽  
V. Hernández ◽  
J. T. López-Navarrete ◽  
S. E. Jorge-Villar
Keyword(s):  
Raman Spectroscopy ◽  
Inorganic Compounds ◽  
Outer Space ◽  
European Space Agency ◽  
Usnic Acid ◽  
Spectral Signature ◽  
Raman Spectroscopic ◽  
Space Agency ◽  
Calcium Oxalates ◽  
Short Time

AbstractLithopanspermia Theory has suggested that life was transferred among planets by meteorites and other rocky bodies. If the planet had an atmosphere, this transfer of life had to survive drastic temperature changes in a very short time in its entry or exit. Only organisms able to endure such a temperature range could colonize a planet from outer space. Many experiments are being carried out by NASA and European Space Agency to understand which organisms were able to survive and how. Among the suite of instruments designed for extraplanetary exploration, particularly for Mars surface exploration, a Raman spectrometer was selected with the main objective of looking for life signals. Among all attributes, Raman spectroscopy is able to identify organic and inorganic compounds, either pure or in admixture, without requiring sample manipulation. In this study, we used Raman spectroscopy to examine the lichen Squamarina lentigera biomarkers. We analyse spectral signature changes after sample heating under different experimental situations, such as (a) laser, (b) analysis accumulations over the same spot and (c) environmental temperature increase. Our goal is to evaluate the capability of Raman spectroscopy to identify unambiguously life markers even if heating has induced spectral changes, reflecting biomolecular transformations. Usnic acid, chlorophyll, carotene and calcium oxalates were identified by the Raman spectra. From our experiments, we have seen that usnic acid, carotene and calcium oxalates (the last two have been suggested to be good biomarkers) respond in a different way to environmental heating. Our main conclusion is that despite their abundance in nature or their inorganic composition the resistance to heat makes some molecules more suitable than others as biomarkers.

The solubility of calcium oxalates explains some aspects of their underrepresentation in the oral cavity

2021 ◽  
Vol 121 ◽  
pp. 104965
Author(s):  
Krista M. Vincent ◽  
Paul V. Azzopardi ◽  
Silvia Mittler ◽  
Bernd Grohe
Keyword(s):  
Oral Cavity ◽  
Calcium Oxalates

Formation and Stability of Calcium Oxalates, the Main Crystalline Phases of Kidney Stones

2011 ◽  
pp. 415-424 ◽  
Author(s):  
Alina R. Izatulina ◽  
Yurii O. Punin ◽  
Alexandr G. Shtukenberg ◽  
Olga V. Frank-Kamenetskaya ◽  
Vladislav V. Gurzhiy
Keyword(s):  
Kidney Stones ◽  
Crystalline Phases ◽  
Calcium Oxalates

Precipitation of calcium oxalates from high ionic strength solutions III. the influence of reactant concentrations on the properties of the precipitates

1985 ◽  
Vol 71 (3) ◽  
pp. 655-663 ◽  
Author(s):  
V. Babić-Ivančić ◽  
H. Füredi-Milhofer ◽  
B. Purgarić ◽  
N. Brničević ◽  
Z. Despotović
Keyword(s):  
Ionic Strength ◽  
High Ionic Strength ◽  
Calcium Oxalates
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