Results 81 to 90 of about 3,576 (202)

Designing Atomically Precise and Robust COF Hybrids for Efficient Photocatalytic CO₂ Reduction

open access: yesSmall, Volume 21, Issue 26, July 3, 2025.
The rational design of a novel covalent organic framework (COF)‐based hybrid CO2 photocatalyst allows for the atomistic level‐resolution of immobilized Rhenium(I) centers in the porous structure. The ReI‐decorated dibenzochrysene COF shows outstanding photocatalytic performance with a CO production rate of 1.16 mmol g−1 h−1 and long‐term photostability
Laura Spies   +8 more
wiley   +1 more source

Viveiros para produção de mudas florestais. [PDF]

open access: yes, 2015
Descrição de um viveiro florestal: É uma área destinada à produção de mudas florestais, permanecendo até o momento definitivo de ida ao campo. Descreve os tipos de viveiros, aspectos, tipos de canteiros, embalagens para mudas, forma de viveiros cobertas,
NASCIMENTO, C. E. de S.
core  

Fenologia de samambaias e licófitas no Brasil: uma abordagem metodológica e ecológica

open access: yesRevista Brasileira de Geografia Física, 2019
Samambaias são plantas vasculares sem sementes que se distribuem em uma variedade de ecossistemas, dos trópicos à região boreal e ocupam desde o estrato herbáceo até o arborescente.
A. Müller, J. Schmitt
semanticscholar   +1 more source

Surface Charge Modulation in Covalent Organic Frameworks for Controlled Pt‐Photodeposition and Enhanced Photocatalytic Hydrogen Evolution

open access: yesSmall, Volume 21, Issue 27, July 10, 2025.
This study demonstrates that the photocatalytic hydrogen evolution efficiency of COFs can be effectively controlled by modulating surface charge via post‐synthetic linkage conversion from imine to amide. This unique interfacial modification approach switches the surface charge of COFs and introduces a shift in the reaction mechanism of the in situ Pt ...
Klaudija Paliušytė   +8 more
wiley   +1 more source

BioTIME 2.0: Expanding and Improving a Database of Biodiversity Time Series

open access: yesGlobal Ecology and Biogeography, Volume 34, Issue 5, May 2025.
ABSTRACT Motivation Here, we make available a second version of the BioTIME database, which compiles records of abundance estimates for species in sample events of ecological assemblages through time. The updated version expands version 1.0 of the database by doubling the number of studies and includes substantial additional curation to the taxonomic ...
Maria Dornelas   +484 more
wiley   +1 more source

A floricultura no Distrito Federal: perspectivas para o setor. [PDF]

open access: yes, 2013
bitstream/item/92989/1/doc-310 ...
ALONSO, A. M., SILVA, J. C. S.
core  

Diaspididae (Hemiptera, Coccoidea) in sori of two fern species

open access: yesEntomoBrasilis, 2015
. This note reports the presence of two scale insects species  Hemiberlesia palmae (Cockerell) and Pinnaspis strachani (Cooley) (Coccoidea, Diaspididae), associated respectively with Asplenium serratum L.
Marcelo Guerra Santos   +1 more
doaj   +1 more source

Samambaias e licófitas do Parque Estadual Acaraí, São Francisco do Sul, Santa Catarina, Brasil

open access: yesActa Biológica Catarinense, 2019
Pesquisas e levantamentos florísticos específicos sobre samambaias e licófitas em restingas são escassos. O Parque Estadual Acaraí, unidade de conservação de proteção integral, maior remanescente de restinga em área contínua no estado de Santa Catarina ...
Nilton Paulo Vieira Júnior   +2 more
semanticscholar   +1 more source

“Dark taxonomy”: A new protocol for overcoming the taxonomic impediments for dark taxa and broadening the taxon base for biodiversity assessment

open access: yesCladistics, Volume 41, Issue 2, Page 223-238, April 2025.
Abstract We are entering the sixth mass extinction with little data for “dark taxa”, although they comprise most species. Much of the neglect is due to the fact that conventional taxonomic methods struggle with handling thousands of specimens belonging to hundreds of species. We thus here propose a new strategy that we call “dark taxonomy”.
Rudolf Meier   +7 more
wiley   +1 more source

Novos registros de samambaias para a Amazônia Brasileira

open access: yesRodriguésia
Novos registros de ocorrência de samambaias são apresentados: dois para o Brasil, dois para a Amazônia Brasileira e 19 para o estado do Pará.
Luiz Armando de Araújo Góes-Neto   +1 more
doaj   +1 more source

Home - About - Disclaimer - Privacy