Results 61 to 70 of about 2,694,025 (319)
Network analysis with quantum dynamics clarifies why photosystem II exploits both chlorophyll a and b [PDF]
arXiv, 2021 In green plants, chlorophyll-a and chlorophyll-b are the predominant pigments bound to light-harvesting proteins. While the individual characteristics of these chlorophylls are well understood, the advantages of their coexistence remain unclear. In this study, we establish a method to simulate excitation energy transfer within the entire photosystem II
arxiv
Prospects for Detecting Oxygen, Water, and Chlorophyll on an Exo-Earth [PDF]
Proceedings of the National Academy of Sciences, September 16,
2014, vol. 111, issue 37, pp. 13278-13283, 2014 The goal of finding and characterizing nearby Earth-like planets is driving many NASA high-contrast flagship mission concepts, the latest of which is known as the Advanced Technology Large-Aperture Space Telescope (ATLAST). In this article, we calculate the optimal spectral resolution $R=\lambda/\delta\lambda$ and minimum signal-to-noise ratio per ...
arxiv +1 more source
Recent Advances in Highly Luminescent Carbon Dots
Advanced Functional Materials, EarlyView.Here, a comprehensive summary of the advancements is provided in highly luminescent carbon dots across various luminescence bands since their discovery in 2004. It systematically covers the synthesis, structural characteristics, preparation strategies, and essential purification of these carbon dots, along with their applications in efficient ...
Yupeng Liu +6 more
wiley +1 more source
Ecological Applications, Volume 32, Issue 8, December 2022., 2022 Abstract Arthropod biomass is a key element in ecosystem functionality and a basic food item for many species. It must be estimated through traditional costly field sampling, normally at just a few sampling points. Arthropod biomass and plant productivity should be narrowly related because a large majority of arthropods are herbivorous, and others ...
J. Traba +9 more
wiley +1 more source
The statistical power to detect cross‐scale interactions at macroscales
Ecosphere, 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
Acta 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
Ecology and Evolution, 2023 Plant genetic diversity differs in habitat's oscillations, especially species distributed under heterogeneous environmental conditions. Freshwater ecosystems are vulnerable to biotic and abiotic impacts, which affect the genetic and epigenetic variations
Yixian Li +3 more
doaj +1 more source
Carotenoids and Chlorophylls as Antioxidants [PDF]
Antioxidants, 2020 Chlorophylls and carotenoids are natural pigments that are present in our daily diet, especially with the increasing tendency towards more natural and healthy behaviors among consumers. As disturbed antioxidant homeostasis capacities seem to be implicated in the progress of different pathologies, the antioxidant properties of both groups of lipophilic ...
Antonio Pérez-Gálvez +2 more
openaire +5 more sources
Advanced Healthcare Materials, EarlyView.A magnetic microrobot fabricated by Spirulina platensis is proposed to accumulate in tumor regions and generate in situ high calcium concentration and sufficient oxygen. These characteristics of the microrobot present a strategy for triggering calcium overload therapy and chlorophyll‐mediated photodynamic therapy, and such combination resulted in a ...
Shuai Jiang +12 more
wiley +1 more source
Química Nova, 2009 This work describes a simple and economical experiment for the extraction and purification of chlorophyll a from Spirulina maxima. Extraction and purification of natural compounds can be considered one of the most illustrative experiments that can be ...
Ana Paula Jecks Maestrin +4 more
doaj +1 more source