Results 61 to 70 of about 26,318 (233)

BOOK REVIEW Introdução a Mineralogia Pratica [PDF]

SOUTHERN BRAZILIAN JOURNAL OF CHEMISTRY, 2008
PAULO CESAR PEREIRA DAS NEVES, FLÁVIA SCHENATO, FLÁVIO ANTÔNIO BACHI, "Introdução a Mineralogia Pratica", 2a edição, Revisada e Atualizada, Editora da ULBRA, Canoas, RS, Brasil, 2008, 335 paginas. A 2ª edição deste excelente livro apresenta além de um acréscimo no número de páginas, uma melhoria significativa com respeito à 1ª edição.
openaire   +1 more source

Total Chiral Symmetry Breaking during Crystallization: Who needs a "Mother Crystal"? [PDF]

, 2005
Processes that can produce states of broken chiral symmetry are of particular interest to physics, chemistry and biology. Chiral symmetry breaking during crystallization of sodium chlorate occurs via the production of secondary crystals of the same ...
Cristobal Viedma, D. K. Kondepudi, F. S. Kipping, K. Soai, R. L. Joesten, R. W. G. Wyckoff, W. A. Bonner, W. A. Bonner   +7 more
core   +3 more sources

Gypsum Gardens: Self‐Assembled Tubular Structures of Calcium Sulfate with Relevance for the Detection of Extraterrestrial Life

Angewandte Chemie International Edition, Volume 64, Issue 48, November 24, 2025.
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.
Selina Reigl, Elisabeth Wagner, Carlos Pimentel, Werner Kunz, Alexander E. S. Van Driessche, Matthias Kellermeier   +5 more
wiley   +1 more source

Changes in chemical composition of peridotite olivine crystals as a result of xenolith–host rock interaction (Jeziorna, Lower Silesia, SW Poland)

Mineralogia
Petrological observations and major elements analyses in olivine crystals in small xenoliths (>1.5 cm in diameter) from the Jeziorna locality, SW Poland, are presented.
Nowak Monika
doaj   +1 more source

Genetic markers associated with bone composition in Rhode Island Red laying hens

Genetics Selection Evolution, 2023
Background Bone damage has welfare and economic impacts on modern commercial poultry and is known as one of the major challenges in the poultry industry.
Moh Sallam, Peter W. Wilson, Björn Andersson, Matthias Schmutz, Cristina Benavides, Nazaret Dominguez‑Gasca, Estefania Sanchez‑Rodriguez, Alejandro B. Rodriguez‑Navarro, Ian C. Dunn, Dirk‑Jan De Koning, Martin Johnsson   +10 more
doaj   +1 more source

Subsolidus processes in the Longonjo and Bailundo carbonatites (Angola) [PDF]

, 2012
Peer ReviewedPostprint (published ...
Alfonso Abella, María Pura, Bambi, Aurora Cuaiela João Mateus, Castellano Calvo, Amaia, Gonçalves, Antonio Olimpio, Melgarejo Draper, Joan Carles   +4 more
core  

Modulation of the Acidity of HY, HBETA, and HZSM‐5 Zeolites by Lanthanum Incorporation for Selective Gasoline Desulfurization in the FCC Riser

ChemCatChem, Volume 17, Issue 21, November 10, 2025.
Desulfurization in the FCC riser is achieved by modifying zeolite catalysts with La3+ ions, promoting H2S formation from thiophenic compounds while suppressing secondary reactions. This approach enhances gasoline quality by increasing selectivity for H2S and enabling efficient condensation and alkylation, supporting cleaner fuel production and ...
Ronaldo C. Santos, Daniel F. Almeida, Anderson C. dos S. Silva, Yiu L Lam, José M. M. Ferreira, D. Ballesteros‐Plata, Enrique Rodríguez‐Castellón, Agustin Martínez, Luiz A. M. Pontes   +8 more
wiley   +1 more source

Alteração mineralógica de Neossolos em uma climo-litossequência no Planalto do Rio Grande do Sul Mineral weathering in Neossolos in a climo-litosequence on the Rio Grande do Sul Plateau, Brazil

Ciência Rural, 2012
No Estado do Rio Grande do Sul (RS), os Neossolos Litólicos e Neossolos Regolíticos são solos que têm sofrido forte pressão de uso, demandando maior conhecimento sobre sua gênese e mineralogia.
Fabrício de Araújo Pedron, Antonio Carlos de Azevedo, Ricardo Simão Diniz Dalmolin   +2 more
doaj   +1 more source

Mineralogical characterization of Sn deposits from the Santa Fe District, Bolivia [PDF]

, 2015
The Sn-Zn-Pb-Ag Japo-Santa Fe-Morococala ore deposit is located in the Central Andean Belt province. The ore mineralization is hosted in a Paleozoic metasedimentary sequence and porphyritic Oligocene-Miocene igneous rocks. Ore minerals occur in veins and
Alfonso Abella, María Pura, Canet Miquel, Carles, García-Vallès, Maite, Jiménez-Franco, Abigail, Trujillo, Juan Elvys   +4 more
core  

Atributos dos solos do complexo petroquímico Comperj em função de variações litotípicas, da paisagem e do uso atual. [PDF]

, 2016
A implantação do Comperj (complexo petroquímico da Petrobras e de empresas parceiras no município de Itaboraí) envolve um grande impacto ao meio natural, sendo ao mesmo tempo uma oportunidade para ações de compensação ambiental.
CURCIO, G. R., DEDECK, R. A., GOMES, J. B. V., RAMOS, M. R.   +3 more
core   +1 more source