Results 121 to 130 of about 116,363 (312)

Design and Characterization of a Dual‐Mode Soft Robotic Flapping Propeller With Pneumatic Stiffness Modulation

open access: yesAdvanced Intelligent Systems, EarlyView.
A novel soft robotic propeller overcomes traditional efficiency‐flexibility tradeoffs via a hybrid pneumatic‐cable actuation strategy. This architecture enables active stiffness modulation with dual‐mode locomotion: tunable biomimetic swimming and earthworm‐inspired wriggling for confined spaces.
Jiazi Geng   +6 more
wiley   +1 more source

Satellite measurement of ocean turbulence [PDF]

open access: yes, 2014
Turbulence and mixing in the surface layer of the ocean is a significant element in the combined ocean-atmosphere system, and plays a considerable role in the transfer of heat, gas and momentum across the air-sea boundary.
George, Simon Gareth
core  

Deciphering Microbial Communities and Distinct Metabolic Pathways in the Tangyin Hydrothermal Fields of Okinawa Trough through Metagenomic and Genomic Analyses

open access: yesMicroorganisms
Deep-sea hydrothermal vents have been extensively explored around the globe in the past decades, and the diversity of microbial communities and their ecological functions related to hydrothermal vents have become hotspots in the study of microbial ...
Jiake Li   +5 more
doaj   +1 more source

Taxonomic reassessment of fossil Sequoia and Protosequoia from the Upper Miocene of Central Honshu, Japan, with implications for leaf morphological variation in extant S. sempervirens

open access: yesAmerican Journal of Botany, EarlyView.
Abstract Premise Since its emergence in the Mesozoic, Sequoia (Cupressaceae) has been considered to possess conserved leaf morphology. However, recent studies have shown that the leaves of extant S. sempervirens become smaller, with a scale form, with increasing tree height.
Shun Ikeda, Arata Momohara
wiley   +1 more source

A global diatom database – abundance, biovolume and biomass in the world ocean [PDF]

open access: yes, 2012
. Phytoplankton identification and abundance data are now commonly feeding plankton distribution databases worldwide. This study is a first attempt to compile the largest possible body of data available from different databases as well as from ...
Cornet, V   +167 more
core   +1 more source

Preliminary Insights into the Seasonal Variation, Phylogenetic Diversity, and Biofilm-Forming Capacity of Cultivable Vibrionaceae in Coastal Biofilms of Qingdao, China

open access: yesMicroorganisms
Biofilm formation enables marine Vibrionaceae spp. to survive and adapt in dynamic coastal environments, yet their seasonal and substrate-related biofilm dynamics remain poorly understood. Our study investigated the seasonal distribution, biofilm-forming
Leihaothabam Jeeny   +8 more
doaj   +1 more source

Soil salinity effects on pollen and pollinator visitation in a buzz‐pollinated glycophyte, Solanum carolinense

open access: yesAmerican Journal of Botany, EarlyView.
Abstract Premise Human activity has significantly altered the salt cycle, affecting an estimated 2.5 billion acres of soil worldwide. Elevated soil salinity is a well‐known plant stressor, but it may also affect interactions between plants and insects, which are often sodium limited.
Kylie Bill, David E. Carr
wiley   +1 more source

Synchronous centennial abrupt events in the ocean and atmosphere during the last deglaciation [PDF]

open access: yes, 2015
This study was funded by the European Research Council, the Philip Leverhulme Trust, the National Science Foundation and a Marie Curie Reintegration Grant.Antarctic ice-core data reveal that the atmosphere experienced abrupt centennial increases in CO2 ...
Morris, Paul J.   +6 more
core   +1 more source

Future Slower Reduction of Anthropogenic Aerosols Enhances Extratropical Ocean Surface Warming Trends

open access: yesGeophysical Research Letters
Global surface temperature short‐term trends fluctuate between cooling and fast‐warming under the combined action of external forcing and internal variability, significantly influencing the detectability of near‐term climate change. A key driver of these
Pingting Gu   +4 more
doaj   +1 more source

A case of budding speciation in the California Floristic Province and infraspecific divergence in Abronia villosa

open access: yesAmerican Journal of Botany, EarlyView.
Abstract Premise Budding speciation occurs when peripheral populations adapt to local ecological conditions and “bud” off from a widespread progenitor species. Traditionally regarded as rare because of its sympatric and parapatric nature, budding speciation is largely understudied.
Eli J. Allen   +3 more
wiley   +1 more source

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