Results 31 to 40 of about 36,693 (231)

Integrating Density Functional Theory Modeling with Experimental Data to Understand and Predict Sorption Reactions: Exchange of Salicylate for Phosphate on Goethite

Soil Systems, 2020
Density functional theory (DFT) calculations are a quantum mechanical approach that can be used to model chemical reactions on an atomistic scale. DFT provides predictions on structures, thermodynamics, spectroscopic parameters and kinetics that can be ...
James D. Kubicki, Tsutomu Ohno
doaj   +1 more source

Insights into secondary reactions occurring during atmospheric ablation of micrometeoroids [PDF]

, 2016
Ablation of micrometeoroids during atmospheric entry yields volatile gases such as water, carbon dioxide, and sulfur dioxide, capable of altering atmospheric chemistry and hence the climate and habitability of the planetary surface.
Court, RW, Tan, J
core   +1 more source

Influencing factors and environmental effects of interactions between goethite and organic matter: A critical review

Frontiers in Environmental Science, 2022
This paper reviews progresses in the interactions between goethite and organic matter (OM) and their environmental effects in recent decades. The interactions mainly include the effect of organic matter on the surface properties and the crystallization ...
Shuqi Yi, Xiaorui Chen, Xu Cao, Bing Yi, Wei He   +4 more
doaj   +1 more source

On the nature of goethite, Mn-goethite and Co-goethite as supports for gold nanoparticles

Materials Chemistry and Physics, 2008
Fil: Campo, Betiana Carla. Consejo Nacional de Investigaciones Cientificas y Tecnicas. Centro Cientifico Tecnologico Conicet - Bahia Blanca. Planta Piloto de Ingenieria Quimica. Universidad Nacional del Sur.
Campo, Betiana Carla, Rosseler, Olivier, Alvarez, Mariana, Rueda, Elsa Haydee, Volpe, María Alicia   +4 more
openaire   +2 more sources

Mineralogy of the clay fraction of alfisols in two slope curvatures: IV - spatial correlation with physical properties

Revista Brasileira de Ciência do Solo, 2013
Although the influence of clay mineralogy on soil physical properties has been widely studied, spatial relationships between these features in Alfisols have rarely been examined.
Livia Arantes Camargo, José Marques Júnior, Gener Tadeu Pereira   +2 more
doaj   +1 more source

Primeiro registro de madeira de annonaceae para o neógeno da América do Sul, Bacia do Amazonas, Brasil [PDF]

, 2016
The relief of the regions of Manaus and Itacoatiara,Central Amazon, is supported by Neogene siliciclastic rocks, boundedat the base and top by lateritic paleosols and covered by quaternary sedimentarydeposits from the Solimões-Amazon river system.
Amaral Soares, Emilio Alberto, Cabral Kloster, Adriana, Da Cruz Lima, Felipe José, Gnaedinger, Silvia Cristina, Motta, Marcelo Batista, Riker, Silvio Roberto   +5 more
core   +1 more source

Nondestructive Raman investigation on wall paintings at Sala Vaccarini in Catania (Sicily) [PDF]

, 2016
In this work, the results of a Raman campaign for studying seventeenth-century Sicilian frescoes, by using two portable Raman systems, equipped with different excitation sources (785 and 1064 nm), are proposed.
Agostino, Giuseppe, Barone, Germana, Bersani, Danilo, Coccato, AlessiaUGent000120924543802001344494978617344402D8E287A8-22E5-11E2-9548-999410BDE39D, Lauwers, DebbieUGent00007023790280200125244797321788992206F29022-F0EE-11E1-A9DE-61C894A0A6B4, Manzini, Davide, Mazzoleni, Paolo, Neri, Nicola Francesco, Raneri, Simona, Vandenabeele, PetereditorLW02WE060019921959028010011081800000-0001-5285-9835F5162F6C-F0ED-11E1-A9DE-61C894A0A6B4, Vandenabeele, PeterLW02WE060019921959028010011081800000-0001-5285-9835F5162F6C-F0ED-11E1-A9DE-61C894A0A6B4   +10 more
core   +4 more sources

Kinetic study of goethite dehydration and the effect of aluminium substitution on the dehydrate [PDF]

, 2012
Goethite and Al-substituted goethite were synthesized and were characterized using XRD and XRF. The kinetic study of goethite dehydrate was investigated by TG and DTG at different heating rates (2, 5, 10, 15, 20 ◦C/min) and the effect of Al substitution ...
Chen, Tianhu, Frost, Ray, Liu, Haibo, Qing, Chengsong, Xie, Qiao-qin, Zou, Xuehua   +5 more
core   +2 more sources

Comparative dissolution of natural goethite samples in HCl and HNO3

Journal of Applied Sciences and Environmental Management, 2009
The dissolution of goethite samples in mineral acids from to extreme parts of Nigeria (Osogbo and Kaduna) have been investigated. The rate of dissolution was found to be slightly faster in HCl than HNO3.
N Abdu-Salam, FA Adekola
doaj   +1 more source

Ferromanganese nodules and micro-hardgrounds associated with the Cadiz Contourite Channel (NE Atlantic): Palaeoenvironmental records of fluid venting and bottom currents [PDF]

, 2012
Ferromanganese nodule fields and hardgrounds have recently been discovered in the Cadiz Contourite Channel in the Gulf of Cadiz (850–1000 m). This channel is part of a large contourite depositional system generated by the Mediterranean Outflow Water ...
Abouchami, Al-Aasm, Albarède, Ambar, Ambar, Baraza, Baturin, Beal, Berner, Berner, Berner, Birgel, Blinova, Boetius, Bogdanov, Borowski, Brass, Bryden, Cabeçadas, Cacho, Cangemi, Chen, Chen, Chester, Claude, Claypool, Coleman, Dicus, Díaz-del-Río, Ercilla, Faugères, Faugères, Faugères, Fernández-Puga, Fietzke, Fietzke, Fomina, Fortin, Francisco Javier González, Frankel, García, Gardner, Gardner, Giresse, Glasby, González, González, González, González, González, Grootes, Grootes, Hamoumi, Han, Hartmann, Hein, Hein, Hein, Hein, Hein, Hensen, Hernández-Molina, Hernández-Molina, Hernández-Molina, Hinrichs, Hlawatsch, Hodell, ISA, International Seabed Authority, Jesús Martínez-Frías, José Eugenio Ortiz, Kasten, Kennett, Kenyon, Kohn, Konshauser, Koschinsky, Koschinsky, Kozlova, León, León, León, León, León, Llave, Llave, Llave, Loubere, Lovley, Luis Somoza, Madelain, Magalhães, Maldonado, Mangini, Manheim, Martín-Puertas, Massé, Mazurenko, McArthur, McArthur, Medialdea, Medialdea, Meese, Merinero, Mulder, Munsell Color Co, Nealson, Nealson, Nelson, Nelson, Nelson, Niemann, O'Neill-Barringer, O'Nions, Ochoa, Palmer, Palmer, Paull, Pautot, Peckmann, Peckmann, Pinheiro, Piper, Platt, Puteanus, Raúl Merinero, Rebesco, Reyss, Ricardo León, Robinson, Rogers, Rona, Rosario Lunar, Scholz, Sevastýanov, Sivkov, Somoza, Stadnitskaia, Stadnitskaia, Stein, Stow, Stow, Stumpf, Summerhayes, Taylor, Tebo, Tebo, Templer, Teresa Medialdea, Trinidad de Torres, Tucholke, Usui, Vegas, Veizer, Viana, Voelker, von Stackelberg, Walters, Webb, Zahn, Zheng   +159 more
core   +2 more sources