Results 11 to 20 of about 74,577 (229)

Correlating STED and synchrotron XRF nano-imaging unveils cosegregation of metals and cytoskeleton proteins in dendrites

open access: yeseLife, 2020
Zinc and copper are involved in neuronal differentiation and synaptic plasticity but the molecular mechanisms behind these processes are still elusive due in part to the difficulty of imaging trace metals together with proteins at the synaptic level.
Florelle Domart   +6 more
doaj   +1 more source

Remediation of azo-dyes based toxicity by agro-waste cotton boll peels mediated palladium nanoparticles

open access: yesJournal of Saudi Chemical Society, 2020
The present study reports an environmental benign route for the synthesis of palladium nanoparticles (Pd NPs) using agro-waste empty cotton boll peels aqueous extract for the first time.
Boya Palajonnala Narasaiah   +1 more
doaj   +1 more source

Microbial Speciation [PDF]

open access: yesCold Spring Harbor Perspectives in Biology, 2015
What are species? How do they arise? These questions are not easy to answer and have been particularly controversial in microbiology. Yet, for those microbiologists studying environmental questions or dealing with clinical issues, the ability to name and recognize species, widely considered the fundamental units of ecology, can be practically useful ...
B Jesse, Shapiro, Martin F, Polz
openaire   +2 more sources

Cadmium Speciation Distribution Responses to Soil Properties and Soil Microbes of Plow Layer and Plow Pan Soils in Cadmium-Contaminated Paddy Fields

open access: yesFrontiers in Microbiology, 2021
Cadmium (Cd) speciation ratio in arable land determines the Cd exposure risk and Cd uptake in crops. However, the driving mechanisms of Cd speciation change on the vertical scale of paddy fields remain poorly understood.
Xiaodong Hao   +11 more
doaj   +1 more source

Biogenic Ceria Nanoparticles (CeO2 NPs) for Effective Photocatalytic and Cytotoxic Activity

open access: yesBioengineering, 2020
Ceria nanoparticles (CeO2 NPs) are generally considered in various functional applications, such as catalysts in fuel cells, sensors, and antioxidant and oxidase-like enzymes in the biological environment.
Siripireddy Balaji   +3 more
doaj   +1 more source

Invasive species and biodiversity crises: testing the link in the late devonian. [PDF]

open access: yesPLoS ONE, 2010
During the Late Devonian Biodiversity Crisis, the primary driver of biodiversity decline was the dramatic reduction in speciation rates, not elevated extinction rates; however, the causes of speciation decline have been previously unstudied.
Alycia L Stigall
doaj   +1 more source

Mapping Chemical Elements and Iron Oxidation States in the Substantia Nigra of 6-Hydroxydopamine Lesioned Rats Using Correlative Immunohistochemistry With Proton and Synchrotron Micro-Analysis

open access: yesFrontiers in Neuroscience, 2019
Brain metal homeostasis is altered in neurodegenerative diseases and the concentration, the localization and/or the chemical speciation of the elements can be modified compared to healthy individuals.
Asuncion Carmona   +13 more
doaj   +1 more source

Geographic range size and speciation in honeyeaters

open access: yesBMC Ecology and Evolution, 2022
Background Darwin and others proposed that a species’ geographic range size positively influences speciation likelihood, with the relationship potentially dependent on the mode of speciation and other contributing factors, including geographic setting ...
Eleanor M. Hay   +2 more
doaj   +1 more source

Ability of Current Phylogenetic Clustering to Detect Speciation History

open access: yesFrontiers in Ecology and Evolution, 2021
Phylogenetic diversity aims to quantify the evolutionary relatedness among the species comprising a community, using the phylogenetic tree as the metric of the evolutionary relationships.
Athanasios S. Kallimanis   +4 more
doaj   +1 more source

Frequency-dependent selection predicts patterns of radiations and biodiversity. [PDF]

open access: yesPLoS Computational Biology, 2010
Most empirical studies support a decline in speciation rates through time, although evidence for constant speciation rates also exists. Declining rates have been explained by invoking pre-existing niches, whereas constant rates have been attributed to ...
Carlos J Melián   +4 more
doaj   +1 more source

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