Results 71 to 80 of about 563,029 (306)

Collision‐Resilient Winged Drones Enabled by Tensegrity Structures

Advanced Robotics Research, EarlyView.
Based on structures of birds such as the woodpeck, this article presents the collision‐resilient aerial robot, SWIFT. SWIFT leverages tensegrity structures in the fuselage and wings which allow it to undergo large deformations in a crash, without sustaining damage. Experiments show that SWIFT can reduce impact forces by 70% over conventional structures.
Omar Aloui, Raphael Zufferey, William Stewart, Mohammad Askari, Simon Jeger, Dario Floreano   +5 more
wiley   +1 more source

Bioinspired Soft‐Skeleton Robotics With Cooperative Shape Transformation and Stiffness Adaptation

Advanced Robotics Research, EarlyView.
A bioinspired soft‐skeleton robot that integrates variable‐stiffness chain skeletons into a soft textile skin is developed. The chain skeletons are highly flexible initially but can stiffen upon pneumatic actuation, enabling large deformation and enhanced load‐bearing capacity.
Mengyuan Niu, Xiaorui Hu, Chenmin Yuan, Haoyun Li, Xuzhong Su, Fengxin Sun   +5 more
wiley   +1 more source

A global meta-analysis on the ecological drivers of forest restoration success

Nature Communications, 2016
Restoration of degraded ecosystems is known to enhance biodiversity and vegetation structure. Using a global meta-analysis, Crouzeilles et al. identify the drivers of restoration success in forest ecosystems at both the local and landscape scales.
Renato Crouzeilles, Michael Curran, Mariana S. Ferreira, David B. Lindenmayer, Carlos E. V. Grelle, José M. Rey Benayas   +5 more
doaj   +1 more source

Nephron Patterning: Lessons from Xenopus, Zebrafish, and Mouse Studies

Cells, 2015
The nephron is the basic structural and functional unit of the vertebrate kidney. To ensure kidney functions, the nephrons possess a highly segmental organization where each segment is specialized for the secretion and reabsorption of particular solutes.
Audrey Desgrange, Silvia Cereghini
doaj   +1 more source

Vertebrates...and the conflicts in public image [PDF]

, 1974
The author explores human perceptions, as influenced by words and the images they conjure in the human brain. People worldwide have formed strong images relating to our environment, both positive and negative: beauty and splendor vs.
Haraldstad, Tormod, Haugen, Thrond Oddvar, Hawley, Kate Louise, Höglund, Erik, Kroglund, Frode, Olsen, Esben Moland   +5 more
core  

Identifying and modeling patterns of tetrapod vertebrate mortality rates in the Gulf of Mexico oil spill

, 2011
The accidental oil spill in the Gulf of Mexico in 2010 has caused perceptible damage to marine and freshwater ecosystems. The large quantity of oil leaking at a constant rate and the long duration of the event caused an exponentially increasing mortality
Antonio, F. J., Mendes, R. S., Thomaz, S. M.   +2 more
core   +1 more source

Multigenome DNA sequence conservation identifies Hox cis-regulatory elements [PDF]

, 2008
To learn how well ungapped sequence comparisons of multiple species can predict cis-regulatory elements in Caenorhabditis elegans, we made such predictions across the large, complex ceh-13/lin-39 locus and tested them transgenically. We also examined how
De Buysscher, Tristan, DeModena, John A., Kuntz, Steven G., Schwarz, Erich M., Shizuya, Hiroaki, Sternberg, Paul W., Trout, Diane, Wold, Barbara J.   +7 more
core   +3 more sources

ELABELA Targets Mitochondria to Modulate Heart Development

Advanced Science, EarlyView.
The role of peptide ELABELA (ELA) in cardiomyocyte apoptosis and congenital heart disease (CHD) is unclear. ELA deficiency caused cardiomyocyte apoptosis and CHD. A novel ELA‐APJ‐AKT‐BCL2/BAX axis in regulating mitochondrial function and contributing to CHD pathogenesis was established.
Jian Wang, Qingjie Wang, Zhikang Xu, Shuang Zhou, Yue Zhou, Junjie Yang, Lingfeng Tong, Zhuo Meng, Mei Yang, Wen Zhao, Tie Yang, Hualin Wang, Jun Zhang, Rubin Tan, Lei Wang, Yuqiang Huang, Bin Zhou, Sun Chen, Bing Zhang, Jinxiang Yuan, Jianyuan Zhao, Alex F. Chen, Kun Sun   +22 more
wiley   +1 more source

Two distinct modes of Vgll4-mediated Tead regulation control organ size in zebrafish

Communications Biology
Control of organ size during development and homeostasis relies on balanced regulation of Hippo pathway transcriptional output, yet how TEAD activity is precisely regulated in vivo remains unclear. Using the zebrafish posterior lateral line (pLL) we show
Alicia Lardennois, Veronika Duda, Chaitanya Dingare, Petra A. Klemmt, Constanze Heinzen, Lucas Desruelles, Melanie Heyde, David Simon Kleinhans, Thorsten Falk, Carsten Schelmbauer, Olivia Mozolewska, Sofia Papadopoulou, Jason J. K. Lai, Didier Y. R. Stainier, Virginie Lecaudey   +14 more
doaj   +1 more source

The Upper Famennian Ketleri Formation of Latvia: new data on the fauna and flora from tide-dominated delta deposits in a seasonal climate [PDF]

Estonian Journal of Earth Sciences
Combined sedimentological and palaeontological studies of the vertebrate fossil-bearing deposits of the Upper Devonian, Upper Famennian Ketleri Formation have provided new data on the sedimentary environment of the deposits, as well as on taxonomic and ...
Ervīns Lukševičs, Ģirts Stinkulis, Valters Alksnītis, Tatjana Visotina, Sandijs Mešķis   +4 more
doaj   +1 more source