Results 11 to 20 of about 8,465 (222)

Crosslinked Poly(HEMA)–Based Cellulose Nanocrystal Contact Lenses: Polymer Structure and Nanoparticle Lixiviation

International Journal of Polymer Science
Poly(HEMA)-based materials are widely used in medical devices, with well-established applications in soft contact lenses (CLs). Owing to their simplicity and the extensive literature available, poly(HEMA) derivatives—particularly crosslinked HEMA:EGDMA ...
Arthur Spilit, Syed Ali Faran, Alain Dufresne, Laurence Fitzhenry, Marcos Mariano   +4 more
doaj   +2 more sources

From Green to Brown: Characterization of the Fast Alteration of Modern Greenish Enamels in Glass Windows. [PDF]

Chempluschem
Spots and stains appeared on the modern green enamel from different stained‐glass windows as a consequence of environmental alteration. The multianalytical characterization showed a 3‐step alteration mechanism divided into Pb2+ lixiviation from the enamel, formation of hydrocerussite (2PbCO3·Pb(OH)2), and transformation into scrutinyite (α‐PbO2) and ...
Palomar T, Calatayud DG, Oujja M, Maestro-Guijarro L, Aparicio M, Mosa J, Koppermann B, Seliger L.   +7 more
europepmc   +2 more sources

Novel Graphitic Oxynitrides as Photocatalysts for Sustainable H₂ Production and CO₂ Valorization. The Importance of Self-Assembly for Catalytic Activity. [PDF]

ChemSusChem
A novel subclass of graphitic oxynitrides, easily generated from otherwise abundant prebiotic monomers, namely cyanamide and glyoxal, debut in the scenario of sustainable heterogeneous catalysts, as demonstrated through applications to the highly demanding H2 and CO2 agendas.
Lavado N, Pardo-Botello R, María Sánchez-Rodas J, Fernando Martínez R, Montes V, Javier López-Tenllado F, Cintas P, Babiano R.   +7 more
europepmc   +2 more sources

Controlling Selectivity at the First Hydrogenation Level: Synthesis of 3-Hydroxyisoindolines by Heterogeneously Silver-Catalyzed Monohydrogenation of Phthalimides. [PDF]

Adv Sci (Weinh)
3‐Hydroxylactams are obtained from phthalimides through a heterogeneous catalyzed chemoselective hydrogenation, able to stop the process at the first hydrogenation level. By using a rationally designed [Ag/Al2O3] recyclable solid nanocatalyst, a wide range of cyclic hemiamidals are accesed through a full atom‐economical reaction that preserves (hetero ...
Lluna-Galán C, Adam R, Cabrero-Antonino JR.   +2 more
europepmc   +2 more sources

Adubação Nitrogenada em Pastagem de Triticale mais Azevém sob Pastejo com Lotação Contínua: Recuperação de Nitrogênio e Eficiência na Produção de Forragem Nitrogen Fertilization on Triticale plus Italian Ryegrass Pasture under Continuous Stocking: Nitrogen Recovery and Forage Production Efficiency

Revista Brasileira de Zootecnia, 2002
O objetivo do experimento foi avaliar a eficiência da adubação nitrogenada na forma de uréia, em pastagem de triticale mais azevém, submetida a pastejo com lotação contínua. Foram usados quatro níveis de nitrogênio em cobertura: 0, 150, 300 e 450 kg N/ha,
André Brugnara Soares, João Restle
doaj   +1 more source

Impact de l'introduction des légumineuses dans les systèmes de culture sur les émissions de protoxyde d'azote [PDF]

, 2018
Dans un objectif d'atténuation du réchauffement climatique, la mise en place de systèmes de culture plus autonomes vis - à - vis des engrais minéraux devient incontournable pour réduire les émissions de gaz à effet de serre (GES) tout en diminuant le ...
Cohan, Jean-Pierre, Dubois, S., Duval, R., Flénet, F., Fontaine, L., Fourrié, L., Justes, Eric, Leclerc, B., Mary, Bruno, Massad, Raia Silvia, Schneider, A., Tailleur, Aurélie, Véricel, G.   +12 more
core   +3 more sources

Adubação orgânica e inorgânica de batatinha em solos arenosos: produtividade, nutrientes na planta e lixiviação Organic and inorganic fertilization of potato in sandy soils: productivity, nutrients in the plant and leaching

Revista Brasileira de Engenharia Agrícola e Ambiental, 2011
As relações entre os teores de nutrientes em solos com adubação orgânica e inorgânica e os teores de nutrientes e produtividade de batatinha foram determinadas tal como as relações entre aportes e a lixiviação de N e bases trocáveis.
Fabio F. de Oliveira, Ignacio H. Salcedo, Sandra R. S. Galvão   +2 more
doaj   +1 more source

Recovery of Cs-137 from electric arc furnace dust by lixiviation

Case Studies in Chemical and Environmental Engineering, 2022
An orphan radioactive source of Cs-137 was inadvertently melted in an electric arc furnace, generating large volumes of electric arc furnace dusts contaminated with Cs-137 (137Cs-EAFD). This work proposes the Cs-137 recovery from 137Cs-EAFD by applying a
Fabiola Monroy-Guzmán, Ricardo Soria Juárez, María Dolores Tenorio Castilleros   +2 more
doaj   +1 more source

Mercury transfer from watersheds to aquatic environments following the erosion of agrarian soils: A molecular biomarker approach [PDF]

, 2008
Lake St. Pierre, an important freshwater location for sports and commercial fisheries in Canada, is composed of a 120 km2 stretchof the St. Lawrence River, located at the center of the St. Lawrence Lowlands. Receiving its waters from the St.
Caron, Sébastien, Lucotte, Marc, Teisserenc, Roman   +2 more
core   +1 more source

Electrodeposition of Zn-Mn alloys from recycling battery leach solutions in the presence of amines [PDF]

, 2010
The recovery of metal ions by electrodeposition from solutions resulting from the lixiviation of spent Zn-MnO2 batteries was studied. It was attempted to optimise the electrodeposition process, the selectivity of ion-separation, the morphologic ...
Brito, P. S. D., Patrício, S., Rodrigues, L. F., Santos, D. M. F., Sequeira, C. A. C.   +4 more
core   +1 more source