Results 191 to 200 of about 148,843 (339)

Spring and Power in Hovering Ornithopters

Advanced Intelligent Systems, EarlyView.
Only small ornithopters can hover, longest at the hummingbird size. This article reviews the drive and power of these hovering machines, focusing on elastic energy and thrust boosters. Unlike two‐winged designs, X‐winged and multiple‐V‐winged ornithopters benefit from lower disk loading and slower, smaller wingbeats, and the clap‐and‐fling effect ...
Gih‐Keong Lau, Yao‐Wei Chin, Shih‐Chun Lin, Yu‐Hsiang Lai, Boo Cheong Khoo   +4 more
wiley   +1 more source

Extreme fire severity interacts with seed traits to moderate post‐fire species assemblages

American Journal of Botany, EarlyView.
Abstract Premise Climate change is globally pushing fire regimes to new extremes, with unprecedented large‐scale severe fires. Persistent soil seed banks are a key mechanism for plant species recovery after fires, but extreme fire severity may generate soil temperatures beyond thresholds seeds are adapted to.
Michi Sano, Ryan Tangney, Alexandria Thomsen, Mark K. J. Ooi   +3 more
wiley   +1 more source

Effects of Different Temperatures on the Physiological Characteristics of Sweet Potato (<i>Ipomoea batatas</i> L. Lam) Storage Roots and Growth of Seedlings During the Sprouting and Seedling Period. [PDF]

Plants (Basel)
Sun G, Gou Y, Zhang L, Tang M, Li Y, Song Y, Deng S, Du K, Lv C, Tang D, Wang J.   +10 more
europepmc   +1 more source

Chemical Control of Plant Growth and Development. : (1) Germination of rice seed as affected by sprouting and gibberellin application.

, 1963
Noboru Yamada, Hiroshi Suge, Hiroshi Nakamura   +2 more
openalex   +2 more sources

Grass functional traits reflect the long history of fire and grazers in the savannas of Texas

American Journal of Botany, EarlyView.
Abstract Premise Understanding relationships among grass traits, fire, and herbivores may help improve conservation strategies for savannas that are threatened by novel disturbance regimes. Emerging theory, developed in Africa, emphasizes that functional traits of savanna grasses reflect the distinct ways that fire and grazers consume biomass ...
Ashish N. Nerlekar, Daniel Spalink, Joseph W. Veldman   +2 more
wiley   +1 more source

Endothelial Sprout Formation Is Regulated by Substrate Stiffness and Notch Signaling. [PDF]

Int J Mol Sci
Kretschmer M, Vollmar AM, Zahler S.
europepmc   +1 more source

Cytokinin-induced Axillary Bud Sprouting in Macadamia1 [PDF]

, 1974
S. B. Boswell, W. B. Storey
openalex   +1 more source

Establishment patterns of saguaro cactus (Carnegiea gigantea) at the microsite scale help explain saguaro regeneration and distributions in heterogenous, regional habitats

American Journal of Botany, EarlyView.
Abstract Premise Establishment of long‐lived perennial plants is a pivotal event that often leads to reproductive maturity. The population dynamics of the giant saguaro cactus (Carnegiea gigantea) have been investigated over large spatial areas, but establishment patterns have not been studied at the microsite (1 m) scale.
Peter B. Breslin, Charlotte Brown, Alberto Búrquez, Frank W. Reichenbacher, Susana Rodriguez‐Buritica, D. Lawrence Venable, Deborah E. Goldberg   +6 more
wiley   +1 more source

Studies on the Control of Setting-tuber Growth in Sweet Potato : Growing process of plants and development of setting-tuber exposed to the light after sprouting.

, 1962
S. Akita, Misao Kusuhara, Masashi Kobayashi   +2 more
openalex   +2 more sources

Response of Brussels Sprouts to Chemical Pinching with Fatty Alcohols and Methyl Esters of Fatty Acids1 [PDF]

, 1975
M. Vereecke
openalex   +1 more source