Zobrazeno 1 - 10
of 166
pro vyhledávání: '"Roberto Guardani"'
Autor:
Cesar de Castro, Marcondes Lima da Costa, Ruan Francisco Firmano, Roberto Guardani, George Rodrigues da Silva
Publikováno v:
Pesquisa Agropecuária Brasileira, Vol 58 (2023)
Abstract The objective of this work was to investigate changes in soil chemical characteristics, phosphorous concentrations in maize leaves, and the agronomic efficiency (AE) of magnesium thermophosphates produced from rocks of the Maicuru complex in
Externí odkaz:
https://doaj.org/article/6b6dabd39a6c4995beb870ac68f4f1c4
Autor:
Andre Luiz Nunis da Silva, Celia Aparecida Lino dos Santos, Rogério de Melo Riberio de Araújo, Dominic Feldhaus, Bernd Friedrich, Fernando José Gomes Landgraf, Roberto Guardani
Publikováno v:
Metals, Vol 12, Iss 3, p 498 (2022)
The anode effect can occur during neodymium and didymium oxide electrowinning, causing a surge in the electrochemical cell voltage, interrupting the process, and increasing the greenhouse gas emissions. In this work, we develop a mathematical model,
Externí odkaz:
https://doaj.org/article/85727b49f16e4fadaac184db4129cba5
Publikováno v:
Materials Research, Vol 9, Iss 2, Pp 131-135 (2006)
The production of metallic powder by precipitation from solution was studied in laboratory scale as an alternative to the conventionally adopted processes, based on the atomization of molten material, for producing metal powders with small particle s
Externí odkaz:
https://doaj.org/article/733b40dc56534b5690484f4823adb1fe
Autor:
Douglas do Nascimento Silva, Paulo José Piacentini Zagatto, Roberto Guardani, Cláudio Augusto Oller Nascimento
Publikováno v:
Brazilian Archives of Biology and Technology, Vol 48, Iss spe, Pp 257-265 (2005)
Linear Alkyl Benzenes (LABs) are used as insulating oil for electric cables. When it happens a spill, LABs they are basically sorbed in the soil, because, these compounds have high hidrophobicity and low vapor pressure. The conventional methods of tr
Externí odkaz:
https://doaj.org/article/169edbf161f94bcd87b6d0be645a08ab
Autor:
Antonio Carlos Silva Costa Teixeira, Lucas Mendes, Giselle Stollar, Roberto Guardani, Cláudio Augusto Oller do Nascimento
Publikováno v:
Brazilian Archives of Biology and Technology, Vol 48, Iss spe, Pp 207-218 (2005)
The photochemical degradation of agrochemicals in aqueous solution by means of advanced oxidation processes (AOPs) was studied. The photo-Fenton process was evaluated in terms of the time evolution of dissolved organic carbon (COD) and chemical oxyge
Externí odkaz:
https://doaj.org/article/e5c4a3e2f2624ed0b3527740231b807f
Autor:
Sören Sander, Benjamin Glasse, Lucas Grosche, Jose Luis de Paiva, Roberto Guardani, Udo Fritsching
Publikováno v:
Fluids, Vol 2, Iss 1, p 9 (2017)
Working fluids possess several applications in manufacturing processes, for instance lubricants in metals machining. Typical metal working fluids are formulated as oil-in-water emulsions. The maintenance of the physical stability of the working fluid
Externí odkaz:
https://doaj.org/article/df1b9ab11fc249db91941683de06523a
Publikováno v:
International Journal of Minerals, Metallurgy and Materials. 29:1908-1921
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::138d9c2195a84a0fe1c05c1b1e30b983
https://doi.org/10.1007/s12613-022-2487-3
https://doi.org/10.1007/s12613-022-2487-3
Autor:
Roberto Guardani
Publikováno v:
Biblioteca Digital de Teses e Dissertações da USP
Universidade de São Paulo (USP)
instacron:USP
Universidade de São Paulo (USP)
instacron:USP
A aplicação industrial de sistemas de leitos fluidizados do tipo circulante, ou de arraste, em processos que envolvem o contato entre partículas sólidos e gás tem tido interesse crescente em todo o mundo. No entanto, o desenvolvimento prático d
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::14de0572bcbe9b97fbff8258997614d5
https://doi.org/10.11606/t.3.1989.tde-20092022-073530
https://doi.org/10.11606/t.3.1989.tde-20092022-073530
Publikováno v:
Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual)
Universidade de São Paulo (USP)
instacron:USP
Universidade de São Paulo (USP)
instacron:USP
This study presents a techno-economic and environmental analysis of biogas upgrading processes. Biogas upgrading, with the removal of acid gases (CO2, H2S) from biogas produced from municipal solid wastes, can reduce air pollutant emission and increa
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::35a770bee83decc1396da43589b64c99
https://doi.org/10.1016/j.renene.2021.02.097
https://doi.org/10.1016/j.renene.2021.02.097