Results 121 to 130 of about 156,677 (249)

Global Model Estimates of Atmospheric Al, Ca, Fe, Si, and Ti From Dust and Non‐Dust Aerosols Informed by EMIT Surface Mineralogy and Evaluated Against Observations

Global Biogeochemical Cycles, Volume 40, Issue 5, May 2026.
Abstract Atmospheric deposition of micro‐nutrients like Fe has been shown to be important for ocean biogeochemistry. The largest source of atmospheric Fe and other elements (e.g., Ca, Al, Si, and Ti) is desert dust, although there are significant non‐dust sources in some regions (e.g., combustion, sea salts, volcanoes). However, past estimates of these
Natalie M. Mahowald, Longlei Li, María Gonçalves Ageitos, Ronald L. Miller, Carlos Pérez García‐Pando, Paul Ginoux, Vincenzo Obiso, Philip G. Brodrick, Roger N. Clark, Karine Desboeufs, Robert O. Green, Gregory S. Okin, David R. Thompson, Sagar Rathod, Esteban Gazel, Adrian Hornby, Emile Journet, Maria Grazia Alaimo, Célia Alves, Andres Alastuey, Paulo Artaxo, Alex R. Baker, Francisco Barraza, Silvia Becagli, Clifton S. Buck, Giulia Calzolai, Shankararaman Chellam, Ying Chen, Patrick Y. Chuang, David D. Cohen, Cristina Colombi, Evangelia Diapouli, Gaetano Dongarra, Konstantinos Eleftheriadis, Johann P. Engelbrecht, Corinne Galy‐Lacaux, Cassandra Gaston, Dario Gomez, Yenny González Ramos, Jenny Hand, Roy M. Harrison, Barak Herut, Philip K. Hopke, Zsofia Kertesz, Katriina Kyllönen, Fabrice Lambert, Willam M. Landing, Remi Losno, Franco Lucarelli, Willy Maenhaut, Christopher Marsay, Hitoshi Matsui, Randall V. Martin, Yasser Morera‐Gómez, Adina Paytan, Joseph Prospero, Sergio Rodríguez, Geraldine Sarthou, Rachel Shelley, Ronald L. Siefert, Patricia Smichowski, Daniela Varrica   +61 more
wiley   +1 more source

Morphological, Molecular, and Isotopic Approaches to Termite Ecology: A Mangrove Case Study

Biotropica, Volume 58, Issue 3, May 2026.
Termite communities in Caribbean mangroves, though species‐poor, sustain crucial decomposition and nutrient cycling. Their overlapping niches and stochastic assembly highlight termites' resilience and ecological importance in supporting the functioning of these challenging coastal ecosystems.
Robin Casalla, Rafik Neme, Judith Korb
wiley   +1 more source

3D‐Printed Geopolymer as a Basic Heterogeneous Catalyst for the Synthesis of α‐Cyanoacrylates Through the Knoevenagel Condensation

European Journal of Organic Chemistry, Volume 29, Issue 16, 25 April 2026.
3D‐printed geopolymers are presented as efficient and reusable heterogeneous catalysts for the Knoevenagel condensation. Under mild and green conditions, they promote the high‐yield synthesis of diverse α‐cyanoacrylates with remarkable stability and scalability.
Francesca T. Albino, Pedro A. M. Moro, Wanessa B. Menegaro, Luciano Senff, Marcus M. Sá, Dachamir Hotza   +5 more
wiley   +1 more source

Evidence of young, proximal and primary (YPP) diamond source occurring in alluviums in the Santo Antônio do Bonito, Santo Inácio and Douradinho rivers in Coromandel region, Minas Gerais

Brazilian Journal of Geology
: Magmatism associated with the Alto Paranaíba structural high comprises kimberlites, kamafugites, and alkaline complexes, forming an approximately 400 x 150 km NW-SE belt in the southern São Francisco Craton.
Rogério Silvestre Pereira, Reinhardt Adolfo Fuck, Osvaldo Soares França, Anival Antônio Leite   +3 more
doaj   +1 more source

Eudialyte-group minerals from the Monte de Trigo alkaline suite, Brazil: composition and petrological implications

Brazilian Journal of Geology
: The Monte de Trigo alkaline suite is a SiO2-undersaturated syenite-gabbroid association from the Serra do Mar alkaline province. Eudialyte-group minerals (EGMs) occur in one nepheline microsyenite dyke, associated with aegirine-augite, wöhlerite ...
Gaston Eduardo Enrich Rojas, Excelso Ruberti, Rogério Guitarrari Azzone, Celso de Barros Gomes   +3 more
doaj   +1 more source

Valorization of carbohydrates: dehydration of sorbitol to isosorbide in the presence of acidic zeolites [PDF]

, 2015
Currently, the growing interest in the use of biomass as a renewable and sustainable raw material for the production of energy, chemicals and biofuels is driving the development of new catalytic processes and technologies for its conversion.
Ginés-Molina, María José, Lerena Gil, Isabel, Maireles-Torres, Pedro Jesús, Merida-Robles, Josefa Maria, Moreno-Tost, Ramon, Santamaria-Gonzalez, Jose   +5 more
core  

Influência da adição e da modificação química de uma carga mineral nanoparticulada nas propriedades mecânicas e no envelhecimento térmico de compósitos poliuretano/sisal [PDF]

, 2005
Maria Roberta O. Pinto, Marcelo Marques Júnior, Suédina Maria de Lima Silva, Laura Hécker de Carvalho   +3 more
openalex   +1 more source

QUÍMICA MINERAL DAS ROCHAS VULCÂNICAS E LAMPRÓFIROS ESPESSARTÍTICOS DA ASSOCIAÇÃO SHOSHONÍTICA DE LAVRAS DO SUL-RS

, 1998
Evandro Fernandes de Lima, Lauro Valentim Stoll Nardi   +1 more
openalex   +3 more sources

New Trends in the Methodologies of Determination of Benzodiazepine Residues in Biological Samples

Separations
The benzodiazepines are essential drugs used in medicine for anxiolytic, sedative, and hypnotic effects. According to the World Health Organization, the benzodiazepines are the most prescribed hypnotic drugs in the last decade (2010 at time), and their ...
Israel S. Ibarra, Isaí Vázquez-Garrido, Gabriela Islas, Juan F. Flores-Aguilar   +3 more
doaj   +1 more source

Structural stability of Fe5Si3 and Ni2Si studied by high-pressure x-ray diffraction and ab initio total-energy calculations

, 2008
We performed high-pressure angle dispersive x-ray diffraction measurements on Fe5Si3 and Ni2Si up to 75 GPa. Both materials were synthesized in bulk quantities via a solid-state reaction.
A. F. Wells, A. Muñoz, A. Vegas, A. Vegas, D. Errandonea, D. P. Dobson, D. Santamaría-Perez, F. D. Murnaghan, F. Laves, F. Laves, G. Ottonello, H. Kudielka, H. Lange, J. Nuss, K. Toman, M. Jansen, M. O’Keeffe, N. Hirao, P. Rodríguez-Hernandez, R. J. Angel, R. W. Wyckoff, Y. Kuwayama   +21 more
core   +1 more source