Results 11 to 20 of about 6,489 (209)

Palagonitization of Volcanic Rocks in Polar Climates: The Case of Deception Island (Antarctica)

Geochemistry, Geophysics, Geosystems
A detailed study of palagonitization in rocks from Deception Island—one of Antarctica's most active volcanoes—has been performed to advance our understanding of this alteration process.
Oriol Vilanova‐Pagès, Guillem Gisbert, Helena Albert, Adelina Geyer, Meritxell Aulinas, Raquel Arasanz, Jordi Ibañez‐Insa, Antonio Polo‐Sánchez, Antonio Álvarez‐Valero, Olga Prieto‐Ballesteros, Santiago Giralt   +10 more
doaj   +2 more sources

Enhancing Nitrate Removal With Industrial Wine Residue: Insights From Laboratory Batch and Column Experiments Using Chemical, Isotopic and Numerical Modeling Tools

Water Resources Research
Agricultural run‐off exposes recipient water bodies to nitrate (NO3−) pollution. Biological denitrification is a suitable method for removing NO3− in water resources that can be induced by the use of industrial organic liquid waste as an electron donor ...
Alex Abu, Raúl Carrey, Dídac Navarro‐Ciurana, Rosanna Margalef‐Marti, Albert Soler, Neus Otero, Jesús Causapé, Cristina Domènech   +7 more
doaj   +2 more sources

Troubles With Tubules: How Do Iron-Mineral Chemical Gardens Differ From Iron-Mineralized Sheaths of Iron Oxidizing Bacteria? [PDF]

Geobiology
ABSTRACT Microscopic tubules and filaments composed of iron minerals occur in various rock types of all ages. Although typically lacking carbonaceous matter, many are reasonably interpreted as the remains of filamentous microorganisms coated with crystalline iron oxyhydroxides. Iron‐oxidizing bacteria (IOB) acquire such a coating naturally during life.
Podbielski M, Knoll P, Brown G, Huld S, Neubeck A, Cartwright JHE, Sainz-Díaz CI, Pimentel C, McMahon S.   +8 more
europepmc   +2 more sources

Single cell analysis reveals the involvement of the long non-coding RNA Pvt1 in the modulation of muscle atrophy and mitochondrial network [PDF]

, 2019
Long non-coding RNAs (lncRNAs) are emerging as important players in the regulation of several aspects of cellular biology. For a better comprehension of their function, it is fundamental to determine their tissue or cell specificity and to identify their
Alessio, Enrico, Bertoli, Alessandro, Buson, Lisa, Cagnin, Stefano, Chemello, Francesco, Grespi, Francesca, Lanfranchi, Gerolamo, Martini, Paolo, Massimino, Maria L, Millino, Caterina, Pacchioni, Beniamina, Peggion, Caterina, Romualdi, Chiara, Scorrano, Luca   +13 more
core   +1 more source

Gypsum Gardens: Self-Assembled Tubular Structures of Calcium Sulfate with Relevance for the Detection of Extraterrestrial Life. [PDF]

Angew Chem Int Ed Engl
Chemical gardens are self‐assembled architectures with “life‐like” morphologies that form in the absence of any biological activity. Here we show that such structures can also be obtained by contacting reservoirs of calcium and sulfate ions, under conditions that plausibly emulate those prevailing on early Mars.
Reigl S, Wagner E, Pimentel C, Kunz W, Van Driessche AES, Kellermeier M.   +5 more
europepmc   +2 more sources

Grundmannite, CuBiSe2, the Se-analogue of emplectite, a new mineral from the El Dragón mine, Potosí, Bolivia [PDF]

, 2016
© 2016 E. Schweizerbart'sche Verlagsbuchhandlung Science Publishers. Also published by Deutsche Mineralogische Gesellschaft, Sociedad Española de Mineralogía, Società Italiana di Mineralogia e Petrologia, Société Française de Minéralogie et de ...
Bindi, L, Förster, Hans-Jürgen, Stanley, Christopher   +2 more
core   +1 more source

Tópicos especiais de petrologia magmática

Geologia USP. Série Didática, 2015
The technological development of the last decades allowed great advances in analytical processes, both in variety and speed of results. Sophisticated instruments, highly-developed chemical processes and the use of computers have enabled quantizing elements and isotopes that are concentrated in minerals based on the magmatic processes involved. In 2010,
Piero Comin-Chiaramonti, Marta Silvia Maria Mantovani   +1 more
openaire   +1 more source

Absorção e fracionamento dos elementos terras raras por vegetais: estudo comparativo em plantas ocorrentes em diferentes contextos geológicos

Geologia USP. Série Científica, 2010
Neste trabalho busca-se analisar o padrão de distribuição dos Elementos Terras Raras presentes nos vegetais, em relação ao padrão desses elementos no substrato, independente das especificidades metabólicas e fisiológicas de cada tipo de planta e da ...
Maria do Carmo Lima e Cunha, Lauro Valentim Stoll Nardi, Milton Luiz Laquintinie Formoso   +2 more
doaj   +1 more source

An Insight into the Solid-State Miscibility of Triacylglycerol Crystals

Molecules, 2020
The crystallization properties of triacylglycerols (TAGs) strongly determine the functional properties of natural lipids. The polymorphic and mixing phase behavior of TAG molecules have long been, and still are, a hot topic of research with special ...
Jorge Macridachis-González, Laura Bayés-García, Teresa Calvet   +2 more
doaj   +1 more source

Alteração experimental de rochas - A contribuição do Instituto Superior Técnico

Geotecnia, 1986
Faz-se uma resenha dos trabalhos de alteração experimental de rochas rotinadas no Laboratório de Mineralogia e Petrologia do I.S.T.: ensaio com extractor de Soxhlet, ensaio de percolação forçada, ensaio de percolação livre em circuito fechado, ensaios ...
A. Mouraz Miranda
doaj   +1 more source