Results 111 to 120 of about 4,234,405 (332)

Material Composition Gradient Controls the Autonomous Opening of Banksia Seed Pods in Fire‐Prone Habitats

open access: yesAdvanced Functional Materials, EarlyView.
The seed pod valves of Australian Banksia attenuata plants are not simply bi‐layers which bend when dry. These experiments and models reveal complex mechanics, which allow seed release only after several steps of seed pod opening. Stiffness gradients prevent delamination of the valves during loading, and a shape‐memory function protects the seeds ...
Friedrich Reppe   +7 more
wiley   +1 more source

The relationship between elevation and seed-plant species richness in the Mt. Namjagbarwa region (Eastern Himalayas) and its underlying determinants

open access: yesGlobal Ecology and Conservation, 2020
Understanding how species richness changes along altitudinal gradients and what mechanisms answer for those patterns has intrigued increasing attention from numerous researchers, however, there is still no consistent agreement on these questions.
Lu Sun   +4 more
doaj  

Impact of climate change on plant species richness across drylands in China: From past to present and into the future

open access: yesEcological Indicators, 2021
It is commonly believed that climate plays an important role in shaping the patterns of plant species richness. However, it remains unclear how climate may affect plant richness across large spatial scales and also over long-terms, for example across ...
Ying Sun   +14 more
doaj  

Estimating species richness and density of a bird community in a coastal lagoon on the Mexican Pacific

open access: yesHuitzil, 2015
In this study we assess the bias in estimates of bird richness in a tropical wetland. We used 18 months of data from point counts to estimate the species richness in a coastal lagoon in Oaxaca and computed eight species richness estimators.
Mateo D.M. Ruiz Bruce Taylor   +1 more
doaj   +1 more source

Al₂O₃‐Functionalized Carbon Nanomembranes with Enhanced Water Permeance and Selectivity for Efficient Air Dehumidification

open access: yesAdvanced Functional Materials, EarlyView.
Carbon nanomembranes with ultra‐thin Al2O3 functionalization are less than 15 nm thin and exhibit outstanding permeation performance with a water vapor/nitrogen selectivity higher than 1 × 104, twice that of pristine CNMs, and an exceptionally high water vapor permeation rate for potential applications in air dehumidification.
Jan Biedinger   +10 more
wiley   +1 more source

Stable Radical Polymers as New Electroactive Materials: Synthesis, Properties, and Emerging Applications

open access: yesAdvanced Functional Materials, EarlyView.
This review covers the recent advances in the synthesis and properties of stable radical polymers (SRPs) and presents their applications in electronics, magnetics, optoelectronics, and biomedicines. The review concludes with a discussion of the challenges in radical chemistry and functionalization, while shedding light on the groundbreaking potential ...
Yufeng Xiong   +11 more
wiley   +1 more source

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