Results 131 to 140 of about 15,502 (243)

Smart Bioinspired Material‐Based Actuators: Current Challenges and Prospects

Advanced Intelligent Systems, Volume 7, Issue 3, March 2025.
This work gathers, in a review style, an extensive and comprehensive literature overview on the development of autonomous actuators based on synthetic materials, bringing together valuable knowledge from several studies. Furthermore, the article identifies the fundamental principles of actuation mechanisms and defines key parameters to address the size
Alejandro Palacios, Léon Chiriatti, Simon Poppinga, Thomas Speck, Vincent Le Houérou   +4 more
wiley   +1 more source

The Role of CRABS CLAW Transcription Factor in Floral Organ Development in Plants. [PDF]

Int J Mol Sci
Szymczyk P, Nowak J, Majewska M.
europepmc   +1 more source

Double Helix Structure for Stable Flexural Actuation in Soft Robotics

Advanced Intelligent Systems, EarlyView.
This work introduces a double‐helical architecture for soft robotic actuators that enhances twisting resistance, increases output force, and minimizes undesired deformation. Actuators driven by shape‐memory alloy wires exhibit a roughly fivefold higher torsional/flexural stiffness ratio and 50% greater force output.
Louis Plottel, Richard Desatnik, Dinesh K. Patel, Philip LeDuc, Carmel Majidi   +4 more
wiley   +1 more source

Spontaneous Long‐Range Order and Alignment in Phase‐Separated Dynamic Covalent Networks Using Discrete Siloxanes

Angewandte Chemie, EarlyView.
Spontaneously aligned, long‐range hexagonal columnar ordering is obtained in phase‐separated dynamic covalent networks by combining discrete siloxanes and dynamic acylsemicarbazide bonds. The ordered network shows improved (thermo)mechanical properties and creep resistance compared to the disordered network.
Stefan J. D. Maessen, Tymen M. L. van der Leede, Anne B. Spoelstra, Bart W. L. van den Bersselaar, Bas F. M. de Waal, Johan P. A. Heuts, Anja R. A. Palmans   +6 more
wiley   +2 more sources

Research Progress on the Regulation of Plant Floral Organ Development by the <i>MADS-box</i> Gene Family. [PDF]

Int J Mol Sci
Wu Q, Wu Y, Li R, Cao H, Li Z, Li Q, Zhou L.   +6 more
europepmc   +1 more source

Sepal Identity of the Pappus and Floral Organ Development in the Common Dandelion (Taraxacum officinale; Asteraceae). [PDF]

Plants (Basel), 2021
Vijverberg K, Welten M, Kraaij M, van Heuven BJ, Smets E, Gravendeel B.   +5 more
europepmc   +1 more source

Integrating developmental and macroevolutionary approaches reveals a staminodial origin of all alternisepalous organs in Caryophyllaceae

American Journal of Botany, EarlyView.
Abstract Premise The identity of sterile floral organs in second‐whorl, alternisepalous positions within Caryophyllaceae remains contentious, having been described as staminodes, “petaloids,” or petals homologous with those of other Pentapetalae. Limited ingroup and outgroup sampling and floral developmental data and inadequate phylogenetic comparative
Riley J. Rees, Andrea D. Appleton, John J. Schenk   +2 more
wiley   +1 more source

Water, Alcohols, Amines, and Amides as Formal Hydrogen‐Atom‐Transfer Reagents Through Activation With Redox‐Active Lewis Acids

Angewandte Chemie, EarlyView.
Protic molecules containing strong O─H or N─H bonds typically resist hydrogen‐atom abstraction because of the high reactivity of the resulting heteroatom‐centered radicals. However, association of the protic molecules with redox‐active Lewis acids can provide powerful hydrogen‐atom donors or proton‐coupled‐electron‐transfer reagents.
Petra Vojáčková, Armido Studer
wiley   +2 more sources

OsFON879, an orphan gene, regulates floral organ homeostasis in rice. [PDF]

Plant Biotechnol J
Wang DH, Xu ZH, Bai SN.
europepmc   +1 more source

Application of a novel schema for describing fossil fern foliage and investigating taxonomic and morphological change across the Cretaceous–Paleogene boundary in western North America

American Journal of Botany, EarlyView.
Abstract Premise The Chicxulub asteroid impact at the Cretaceous–Paleogene (K–Pg) boundary triggered a mass extinction 66 million years ago. Ferns thrived in the aftermath of the extinction, evidenced by the well‐documented “fern spore spike.” However, fern macrofossil records across the K–Pg boundary are less understood.
Fern B. Holian, Emily B. Sessa, Richard S. Barclay, Regan E. Dunn, Jacquelyn L. Gill, Kirk R. Johnson, S. Augusta Maccracken, Ian M. Miller, Jarmila Pittermann, Ellen D. Currano   +9 more
wiley   +1 more source