Results 151 to 160 of about 247,178 (286)

High‐Performance Transparent, Deformable, and Recoverable Biomimetic Stevia–PVA Hydrogel Triboelectric Nanogenerator with Machine Learning‐Assisted Motion Recognition

open access: yesAdvanced Materials, EarlyView.
A transparent, deformable stevia–PVA hydrogel triboelectric nanogenerator delivers significantly enhanced mechanical strength and electrical output through biomimetic hydrogen‐bonded networks. Coupled with machine learning–assisted signal recognition, the self‐powered hydrogel enables accurate human‐motion sensing for intelligent wearable and IoT ...
Thien Trung Luu   +5 more
wiley   +1 more source

Reducing size to increase number: a hypothesis for compound leaves

open access: yesIdeas in Ecology and Evolution, 2012
Adaptive advantages of the compound leaf form in flowering plants have so far remained elusive.  A novel idea—proposed here—is that there are no direct advantages; the compound leaf evolved instead as a trade-off of selection in favour of something else:
Lonnie Aarssen
doaj  

Experimental Warming Does Not Change Fluctuating Asymmetry in Three Willow Species

open access: yesEcology and Evolution
Fluctuating asymmetry (FA) is often proposed as an early warning indicator of subtle changes in plant functioning. Here, we tested whether leaf FA responds consistently to the alleviation of cold stress in three boreal willow species—Salix caprea, S ...
Dmitry E. Gavrikov   +2 more
doaj   +1 more source

Morfoanatomia foliar da reófita facultativa Psychotria carthagenensis Jacq. (Rubiaceae) [PDF]

open access: yes, 2008
Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro de Ciências Biológicas. Programa de Pos-Graduação em Biologia Vegetal.Psychotria carthagenensis Jacq.
Vitarelli, Narah Costa
core  

Data from: Seed size and the evolution of leaf defences

open access: yes, 2015
1. Leaf defences vary widely among tree species, affecting rates of herbivory, survival and reproduction. 2. Two contrasting hypotheses account for variation in leaf defences among species.
Noor, Md. Nur Supardi   +15 more
core   +1 more source

Self‐Seeded Nucleation of PET in a Benign Solvent Yields a High Modulus Aerogel With Ultra‐Low Thermal Conductivity

open access: yesAdvanced Materials, EarlyView.
A new benign solvent (1,3‐diphenylacetone) enables a simple, safe, and sustainable dissolution and gelation method to convert waste PET into low density, monolithic aerogels with high mechanical strength (E = 20 MPa) and remarkably low thermal conductivity (k = 21.9 to 28.9 mW/m·K).
Kira R. Baugh   +9 more
wiley   +1 more source

Lead Halide Perovskite Photoelectrocatalysis

open access: yesAdvanced Materials, EarlyView.
Lead halide perovskite semiconductors have emerged as highly promising materials for solar fuel and chemical synthesis. This perspective discusses advances made in the rational photoelectrode design to improve solar‐to‐chemical conversion, product scope, and scalability.
Virgil Andrei
wiley   +1 more source

Vein-to-blade ratio is an allometric indicator of leaf size and plasticity. [PDF]

open access: yesAm J Bot, 2021
Chitwood DH   +5 more
europepmc   +1 more source

Engineering Strain‐Stiffening Granular Hydrogels for 3D‐Printed Tissue‐Mimicry

open access: yesAdvanced Materials, EarlyView.
A 3D‐printable strain‐stiffening double‐network granular hydrogel (SDGH) enables independent, region‐specific tuning of toe (EToe) and heel (EHeel) moduli through control of microgel packing and network composition. This platform replicates tissue‐like nonlinear mechanics and allows fabrication of high‐fidelity, multilayered aortic valves with ...
Hyeokju Chae   +9 more
wiley   +1 more source

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