Results 31 to 40 of about 1,115,245 (216)

Electrochemical Water Oxidation Mechanisms Involving Macrocyclic Copper(II) Complexes: Ligand Ring Size Effects on Catalytic Cycles

ChemPhysChem, EarlyView.
The ring size of the ligand strongly influences electronic properties, steric effects, and coordination modes of key intermediates. Both catalysts show similar energy barriers for OO bond formation, but [Cu(12‐TMC)]2+ exhibits more complex mechanisms due to ligand reorganization.
João Pedro C. S. Neves, Roberto Rivelino, Tiago Vinicius Alves, Vitor H. Menezes da Silva   +3 more
wiley   +1 more source

Preparation of Surface-Enhanced Raman Scattering Substrates Based on Immobilized Silver-Capped Nanoparticles

Journal of Spectroscopy, 2018
Novel results concerning surface-enhanced Raman scattering mediated by thiol-immobilized capped silver nanoparticles attached to a silicon Si(100) substrate are presented.
C. Caro, F. Gámez, A. P. Zaderenko
doaj   +1 more source

Bottom–up and top–down drivers influence urbanization effects on insect herbivory in oaks

Oikos, EarlyView.
Urban forests provide essential ecosystem services, including pest control, biodiversity conservation, and human health benefits. Herbivory is a widespread biotic interaction that shapes ecosystem functions, such as primary productivity and soil fertility, which underpin these services.
Gabriela Quiroga, Carla Vázquez‐González, Víctor M. Rodríguez, Beatriz Lago‐Núñez, Astrid Van den Bossche, Pieter De Frenne, Martin M. Gossner, Johan A. Stenberg, Kristoffer Hylander, Ayco J. M. Tack, Mona Chor Bjørn, Katerina Sam, Jovan Dobrosavljević, Slobodan Milanović, Olivier Bonnard, Bastien Castagneyrol, Felisa Covelo, Luis Abdala‐Roberts, Xoaquín Moreira   +18 more
wiley   +1 more source

Gonadal growth and reproduction in the sea urchin Sphaerechinus granularis (Lamarck 1816) (Echinodermata: Echinoidea) in southern Spain

Scientia Marina, 2008
The gonadal index and reproductive state of the sea urchin Sphaerechinus granularis were studied for a year in three populations from southeast Spain.
Inés Martínez-Pita, Ana I. Sánchez-España, Francisco J. García   +2 more
doaj   +1 more source

Brecht, Galileu e os Físicos [PDF]

, 1998
Uma alegoria teatral sobre a responsabilidade social e política dos cientistas através da escrita e reescrita do drama Galileu do dramaturgo Bertold Brecht em que a personagem do sábio pisano é recriada à luz de diferentes momentos da história ...
Fitas, Augusto J. S.
core  

Cooperative human signals to honeyguides form local dialects

People and Nature, EarlyView.
Abstract Human language enables the exchange of complex information and precise instructions for collaborative planning and action. It rapidly evolves through social learning, generating diverse cultural communication signals used not only with other humans, but also with domesticated animals bred or trained to respond.
Jessica E. M. van der Wal, Pietro B. D'Amelio, Celestino Dauda, Dominic L. Cram, Brian M. Wood, Claire N. Spottiswoode   +5 more
wiley   +1 more source

Influence of Hornification Treatment and Fiber Length on the Performance of Recycled Polypropylene Composites

Polymer Composites, EarlyView.
Study of the influence of hornification treatment and jute and mallow fiber length on the physical, thermal, and mechanical properties of recycled polypropylene (PP) composites. ABSTRACT The growing accumulation of plastic waste has driven its reuse in the development of new composites, with natural fibers emerging as promising reinforcements. However,
Raquel de Sousa Freire, Gabrielle Machado dos Santos, João de Almeida Melo Filho, Holmer Savastano Junior, Virginia Mansanares Giacon   +4 more
wiley   +1 more source

Explotação do Sistema Aquífero Guarani em Araraquara

Geologia USP. Série Científica, 2012
Araraquara é um dos núcleos urbanos paulistas abastecidos pelo Sistema Aquífero Guarani. A cidade tem mais de 245 poços tubulares que explotam aproximadamente 70.500 m³/d; dos quais 12 poços, representando 50% desta vazão, são operados pela ...
Ricardo Hirata, Marcus Sangiorge Ucci, Ingo Wahnfried, Juliana Baitz Viviani-Lima   +3 more
doaj   +1 more source

Ventilação natural de estufas. Princípios físicos [PDF]

, 2007
A ventilação natural desempenha um papel muito importante no controlo climático das estufas, influenciando a temperatura, a humidade e a concentração de gases da sua atmosfera.
Baptista, F.J., Fitas da Cruz, V.
core  

Evidence of internal structure validity of the nursing outcome “Mechanical Ventilation Weaning Response: Adult (0412)” for critically ill COVID‐19 patients

International Journal of Nursing Knowledge, EarlyView.
Abstract Purpose To evaluate the evidence of internal structure validity of the nursing outcome (NO) “Mechanical Ventilation Weaning Response: Adult (0412)” of the NOs classification for critically ill COVID‐19 patients. Methods A methodological study focused on internal structural validation, part of a multicenter study, was carried out in the ...
Aline Batista Maurício, Viviane Martins da Silva, Agueda Maria Ruiz Zimmer Cavalcante, Larissa Giardini Bruni, Sue Ann Moorhead, Elizabeth Swanson, Karen Dunn Lopez, Marcos Venícios de Oliveira Lopes, Alba Lucia Bottura Leite de Barros   +8 more
wiley   +1 more source