Results 71 to 80 of about 428,550 (357)

The statistical power to detect cross‐scale interactions at macroscales

open access: yesEcosphere, 2016
Macroscale studies of ecological phenomena are increasingly common because stressors such as climate and land‐use change operate at large spatial and temporal scales. Cross‐scale interactions (CSIs), where ecological processes operating at one spatial or
Tyler Wagner   +4 more
doaj   +1 more source

Distribuição espacial e temporal da biomassa fitoplanctônica e variáveis ambientais no Golfão Maranhense, Brasil Spatial and temporal distribution of the phytoplanktonic biomass and environmental variables in the Maranhense Gulf, Brazil

open access: yesActa Botânica Brasílica, 2008
Este trabalho foi desenvolvido com o objetivo de caracterizar alguns estuários do Golfão Maranhense, através da análise da biomassa fitoplanctônica e das variáveis ambientais.
Andrea Christina Gomes de Azevedo   +2 more
doaj   +1 more source

Harnessing Photo‐Energy Conversion in Nanomaterials for Precision Theranostics

open access: yesAdvanced Materials, EarlyView.
Harnessing photo‐energy conversion in nanomaterials enables precision theranostics through light‐driven mechanisms such as photoluminescence, photothermal, photoelectric, photoacoustic, photo‐triggered surface‐enhanced Raman scattering (SERS), and photodynamic processes. This review explores six fundamental principles of photo‐energy conversion, recent
Jingyu Shi   +4 more
wiley   +1 more source

Characterization of phytoplankton biodiversity in tropical shipwrecks off the coast of Pernambuco, Brazil Caracterização da biodiversidade do fitoplâncton em naufrágios tropicais da costa de Pernambuco, Brasil

open access: yesActa Botânica Brasílica, 2010
The phytoplankton community was studied around two artificial reefs (shipwrecks Servemar-X and Servemar-I), located off the coast of Pernambuco, northeastern Brazil, aiming to identify and thus, better describe these environments.
Douglas Henrique Cavalcanti dos Santos   +3 more
doaj   +1 more source

Chlorophyll lasers: Stimulated light emission by chlorophylls and Mg-free chlorophyll derivatives [PDF]

open access: yesProceedings of the National Academy of Sciences, 1977
Stimulated emission and lasing have been demonstrated for chlorophyll a , chlorophyll b , and bacteriochlorophyll a as well as for the Mg-free chlorophyll derivatives pheophytin a and methyl pheophorbide a .
R. Kugel   +3 more
openaire   +3 more sources

Strong enhancement of chlorophyll a concentration by a weak typhoon

open access: yes, 2010
Recent studies demonstrate that chlorophyll a (chl a) concentrations in the surface ocean can be significantly enhanced due to typhoons. The present study investigated chl a concentrations in the middle of the South China Sea (SCS) from 1997-2007.
Fu, Yun-Fei   +4 more
core   +1 more source

Bioinspired Design of Heterogenous Single‐Atomic‐Site Catalysts for Electrocatalysis and Photocatalysis

open access: yesAdvanced Materials, EarlyView.
This review gives a summary on the representative bioinspired single‐atomic‐site catalysts (SACs) and their applications in heterogeneous electrocatalysis and photocatalysis. The fundamentals of bioinspired design strategies are systematically discussed in the context of the first shell coordination, the second/long‐range coordination, and the outer ...
Ying Wang   +4 more
wiley   +1 more source

Variação temporal do fitoplâncton em três praias urbanas do litoral sul do estado de Pernambuco, Nordeste do Brasil Phytoplankton temporal variation on three urban beaches of Pernambuco's South coast, Brazilian Northeast

open access: yesActa Botânica Brasílica, 2010
Este trabalho teve como objetivo efetuar uma análise comparativa da estrutura da comunidade fitoplanctônica, variação da biomassa e dados ambientais, na zona de arrebentação das praias arenosas de Brasília Formosa (8º04'S; 34º52'W), Boa Viagem (8º07'S ...
Leandro Cabanez Ferreira   +5 more
doaj   +1 more source

Chlorophyll b to Chlorophyll a Conversion Precedes Chlorophyll Degradation in Hordeum vulgare L. [PDF]

open access: yesJournal of Biological Chemistry, 1999
This study reveals by in vivo deuterium labeling that in higher plants chlorophyll (Chl) b is converted to Chl a before degradation. For this purpose, de-greening of excised green primary leaves of barley (Hordeum vulgare) was induced by permanent darkness in the presence of heavy water (80 atom % (2)H).
Patrick Folly, Norbert Engel
openaire   +3 more sources

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