Results 251 to 260 of about 143,077 (312)

Light‐Switched Mesenchymal Stem Cells for In Situ Exosome Amplification in Craniofacial Bone Defect Reconstruction

Advanced Science, EarlyView.
Light‐switchable MSCs (MSC‐UCNPs) were constructed by intracellular incorporation of UCNPs. Upon 980 nm irradiation, UCNPs emitted localized ultraviolet light (365 nm), activating the ROS/HEXB/LAMP1 signaling pathway to suppress lysosome–multivesicular body fusion and thereby enhance exosome biogenesis. Embedded within an injectable hydrogel, MSC‐UCNPs
Tingting Wu, Yajing Liu, Shuman Wang, Xiaoming Bai, Luyun Zhang, Yuwei Liu, Zhiwen Fu, Chen Shi   +7 more
wiley   +1 more source

Synergistic Strengthening and Toughening of 3D-Printed Bioinspired Alumina Composites with a Multi-Scale Bouligand Structure. [PDF]

Biomimetics (Basel)
Wang Z, Duan D, Yang L, Bai X, Jiao Z, Wu C, Zhao J, Zhang Z.   +7 more
europepmc   +1 more source

Mindfulness in Action: How Innovative and Inclusive Climates Affect Proactive Behaviors Through Mental Toughness. [PDF]

Psych J
Han X, Zhou H, Zeng G, Han Y.
europepmc   +1 more source

Silicon Carbide Ceramics for Armor Applications: A Review of Sintering Methods and Additive Systems. [PDF]

Molecules
Zhambakin D, Abilev M, Zhilkashinova A, Ichshanova A, Łatka L.   +4 more
europepmc   +1 more source

Machine learning guided resolution of mechanical trade-off in polymer composites via stress adaptive interface. [PDF]

Nat Commun
Wang H, Cheng J, Wu Z, Chen X, Liu S, Niu D, Zhang J, Jin K, He C.   +8 more
europepmc   +1 more source

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On the impact toughness of gradient-structured metals

Acta Materialia, 2020
Abstract Gradient-structured (GS) materials are capable of displaying high strength without compromising ductility, which can result in damage-tolerant structures. However, due to the difficulties in fabricating bulk GS materials, there has been only limited studies on the fracture behavior in GS metals.
Qin Yu, J Pan, Fenghui Duan
exaly   +2 more sources

The quantitative relationship between fracture toughness and impact toughness in high-strength steels

Engineering Fracture Mechanics, 2019
Abstract In this paper, the fracture toughness and impact toughness were systematically studied in high-strength steels. The results show that the two types of toughness are both the representative of the competition between flat fracture and shear fracture, which follows the minimum energy density criterion.
Q Q Duan, P Zhang, X H Zhou
exaly   +2 more sources

Impact Tough Robotics Challenge

2020 IEEE International Symposium on Safety, Security, and Rescue Robotics (SSRR), 2020
ImPACT Tough Robotics Challenge is a national project of Japan Cabinet Office that focuses on tough technologies of robotics to give solutions to disaster response, recovery and preparedness. Natural and man-made disasters are a serious problem for our society. Robotics is widely recognized as potentially effective countermeasure to solve this problem.
openaire   +1 more source

Impact Toughness of A Pipeline Steel

Canadian Metallurgical Quarterly, 1977
Abstract Impact fracture toughness of a pipeline steel was studied as a function of temperature and of the orientation of the crack with respect to the rolling direction. Toughness criteria, such as JId and KId, were determined. Precracked Charpy specimens were used in this investigation.
M. N. Bassim, S. Mikhail, D. R. Hay
openaire   +1 more source

Increasing the impact toughness of rails

Metallurgist, 1988
It is known that the deoxidation of rail steel in the ladle with complex ferroalloys based on silicon and including calcium, magnesium, titanium, Or zirconium in a certain combination makes it possible to obtain railroad rails of group-I quality characterized by a high degree of reliability and long service life.
V. I. Syreishchikova, A. A. Deryabin, �. L. Kolosova, V. E. Semenkov, A. V. Pan, M. A. Stambul'chik, A. B. Dobuzhskaya   +6 more
openaire   +1 more source