Results 61 to 70 of about 278,089 (299)

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

Research and engineering application of layout optimization for lockbolt structures in railway wagons considering multidimensional failure modes based on MSNSGA-III

Scientific Reports
The lockbolt structure is essential in railway wagons, and a scientific lockbolt layout can ensure uniform load distribution, thereby preventing failure. However, current engineering lacks layout optimization methods that address multidimensional failure
Dailin Zhang, Xiaofeng Li, Qiang Zhang, Xinli Han, Shuai Wang, Qiaoyan Ma   +5 more
doaj   +1 more source

Determinants of Rolling Stock Maintenance Cost in Metros

, 2015
This study examines the economies of scale and the determinants of rolling stock maintenance costs for 24 urban rail transit operators. The estimates reveal significant returns to scale in maintenance for both per car and per car kilometre.
Anderson, RJ, Brage-Ardao, R, Graham, DJ
core   +1 more source

DRD2 Deficiency Underlies Pituitary Adenoma Dependent on Escherichia coli Translocation from the Gut

Advanced Science, EarlyView.
Dopamine receptor D2 (DRD2) deficiency disrupts epithelial barrier integrity in both the gut and pituitary gland, facilitating translocation of gut‐derived Escherichia coli into pituitary tissue. Intratumoral E. coli are phagocytosed by microglia, triggering GSDMD‐dependent pyroptosis and HMGB1 release, which subsequently activates MAPK signaling to ...
Xian‐jun Su, Li Ma, Xi Xiong, Jun‐hua Meng, Qi Wu, Yu Zhang, Shu‐guang Dong, Yue‐fei Wang, Jin‐hu Wu, Qing‐yuan Zeng, Hong‐feng Zhang, Li‐li Li, Liang Meng, Min Peng, Xiao‐dong Huang, Li‐quan Wu, Xiong Wang   +16 more
wiley   +1 more source

Dynamics of the Mammalian Placental Metabolome in Placentogenesis and Embryonic Development

Advanced Science, EarlyView.
This study identifies three metabolic stages (E8.5, E9.5–10.5, E11.5–14.5) and two transition periods (E8.5–9.5, E10.5–11.5) in mouse placental development. NAD(H) emerges as a key dynamic metabolite that enhances embryonic growth through accelerated segmentation and increased proliferation of mouse embryonic stem cell (mESC)‐induced presomitic ...
Gang Chen, Zichen Liu, Mengyi Wei, Qian Li, Liang Wu, Kunyuan Yu, Yanhong Xu, Dainan Yu, Wenwu Ma, Hongmei Wang, Ng Shyh‐Chang, Jinglei Zhai   +11 more
wiley   +1 more source

IGF‐1 Deficiency Serves as an Integrated Biomarker Pathogenic Driver and Predictor in Poor Ovarian Response

Advanced Science, EarlyView.
IGF‐1 deficiency underlies poor ovarian response (POR), as reduced levels in follicular fluid and granulosa cells impair antral follicle formation and compromise reproductive outcomes. Including IGF‐1 as a biomarker significantly enhances the accuracy of models predicting both PORrisk and pregnancy success.
Zhu Hu, Yuanyuan Yu, Guanyou Huang, Jinnan Li, Chao Yang, Aizhuan Long, Jia Tang, Tengxiang Chen, Shuyun Zhao, Tuo Zhang   +9 more
wiley   +1 more source

Horizontal recycling of aluminum alloys for the Tokaido Shinkansen N700S.

Nihon Kikai Gakkai ronbunshu
Aluminum alloy double skin extruded materials are used for carbody and interior materials of the Tokaido Shinkansen rolling stock. In previous rolling stock (e.g.
Jun ITO, Koji YOKOYAMA, Tadashi FUJII
doaj   +1 more source

Wear rates in urban rail systems [PDF]

, 2017
A significant part of maintenance costs in urban rail systems (metro, tram, light rapid transit/light metro) is due to wheel-rail wear. Wear rates - measured for example as depth of wear per kilometre run (rolling stock) or per train passage (rails ...
Licciardello, R., Malavasi, G., Ricci, S., Vitali, P.   +3 more
core   +1 more source

Design and Characterization of DX‐Tile DNA Nanostar‐Based Hydrogels

Advanced Science, EarlyView.
In this study, the authors demonstrated that DNA DX‐tile‐based multi‐arm motifs can be used to assemble pure DNA hydrogels, offering greater design flexibility and enhanced control over their mechanical properties and functionalization capabilities compared to single duplex‐based DNA hydrogels.
Dylan V. Scarton, Alessandra B. Coogan, Peter M. Touma, Eray O. Tulun, Katie A. Harrison, Jack Buchen, Richard C. Steiner, Christopher R. Fellin, Hunter G. Mason, Chih‐Hsiang Hu, Sally Farag, Xiaoning Yuan, Shailly Jariwala, Remi Veneziano   +13 more
wiley   +1 more source

Low cycle fatigue analysis of welded joints considering material cycling behavior

Advances in Mechanical Engineering
In order to describe the local cyclic behavior of welds during low cycle fatigue of welded structures, so as to effectively assess the low cycle fatigue of structures, a structural strain numerical method is proposed.
Shaocong Shi, Guangyu Qiu, Zhaoyue Chen, Guangyuan Liang, Xiangwei Li   +4 more
doaj   +1 more source