Results 111 to 120 of about 1,367 (297)

Gravitational perfect fluid collapse in Gauss–Bonnet gravity

European Physical Journal C: Particles and Fields, 2017
The Einstein Gauss–Bonnet theory of gravity is the low-energy limit of heterotic super-symmetric string theory. This paper deals with gravitational collapse of a perfect fluid in Einstein–Gauss–Bonnet gravity by considering the Lemaitre–Tolman–Bondi ...
G. Abbas, M. Tahir
doaj   +1 more source

Towards an observational test of black hole versus naked singularity at the galactic center [PDF]

, 2019
Dipanjan Dey, Pankaj S. Joshi, Ashok Joshi, Parth Bambhaniya   +3 more
openalex   +1 more source

Bioinspired Adaptive Sensors: A Review on Current Developments in Theory and Application

Advanced Materials, EarlyView.
This review comprehensively summarizes the recent progress in the design and fabrication of sensory‐adaptation‐inspired devices and highlights their valuable applications in electronic skin, wearable electronics, and machine vision. The existing challenges and future directions are addressed in aspects such as device performance optimization ...
Guodong Gong, You Zhou, Qingxiu Li, Wenyu Zhao, Sunyingyue Geng, Hangfei Li, Yan‐Bing Leng, Shirui Zhu, Guanglong Ding, Yongbiao Zhai, Ziyu Lv, Ye Zhou, Su‐Ting Han   +12 more
wiley   +1 more source

Axisymmetric solutions to Einstein field equations via integral transforms. [PDF]

Heliyon, 2023
Batic D, Debru NB, Nowakowski M.
europepmc   +1 more source

Electromagnetic waves around dilatonic stars and naked singularities [PDF]

, 2004
Roberto Casadio, S. Fabi, B. Harms
openalex   +1 more source

The Space Within: How Architected Voids Promote Tissue Formation

Advanced Materials, EarlyView.
This review explores the role of void spaces in tissue engineering scaffolds and examines four key methods for introducing porosity into hydrogels at different scales. It discusses sacrificial templating, microgels, phase separation, and 3D printing, highlighting principles, advantages, and limitations. It also addresses emerging strategies integrating
Anna Puiggalí‐Jou, Isabel B. Hui, Carla Fernandez‐Rico, Marcy Zenobi‐Wong   +3 more
wiley   +1 more source

General classification of charged test particle circular orbits in Reissner–Nordström spacetime

European Physical Journal C: Particles and Fields, 2017
We investigate charged particles’ circular motion in the gravitational field of a charged mass distribution described by the Reissner–Nordström spacetime.
D. Pugliese, H. Quevedo, R. Ruffini
doaj   +1 more source

Quasi-Hyperbolically Symmetric γ-Metric. [PDF]

Entropy (Basel), 2023
Herrera L, Di Prisco A, Ospino J, Carot J.   +3 more
europepmc   +1 more source

Causally Simple Spacetimes and Naked Singularities

Iranian Journal of Science
In this paper, We prove a conjecture which states that if M is a nakedly singular future boundary or nakedly singular past boundary spacetime, then the space of null geodesics, N, is non-Hausdorff. Also, we show that every two-dimensional strongly causal spacetime M is causally simple if and only if it is null pseudoconvex.
Mehdi Vatandoost, Rahimeh Pourkhandani, Neda Ebrahimi   +2 more
openaire   +2 more sources

Sculpting the Future of Bone: The Evolution of Absorbable Materials in Orthopedics

Advanced Materials, EarlyView.
This review summarizes the current status of polymeric, ceramic, and metallic absorbable materials in orthopedic applications, and highlights several innovative strategies designed to enhance mechanical performance, control degradation, and promote bioactivity. We also discuss the progress and translational potential of absorbable materials in treating
Zhao Wang, Zehui Lv, Xuejie Cai, Yingjie Wang, Bo Peng, Haojing Xu, Hualuo Pang, Xingdong Yang, Jiawei Xu, Yixin Bian, Bin Feng, Peng Wen, Yufeng Zheng, Xisheng Weng   +13 more
wiley   +1 more source