Results 71 to 80 of about 4,617 (266)
Genetically Programmed Shape‐Morphing of Engineered Living Materials
Advanced Functional Materials, EarlyView.Here, bacterial and mammalian engineered living materials (ELMs) are presented, in which living cells direct genetically programmed and enzymatically mediated shape‐morphing. The resulting deformation and shape‐recovery can be actuated in a genetically controlled manner by an ELM incorporating out‐of‐equilibrium counteracting biochemical reactions with
Jan Becker +7 more
wiley +1 more source
Non-minimal tinges of Unimodular Gravity
Journal of High Energy Physics, 2020 Unimodular Gravity is normally assumed to be equivalent to General Relativity for all matters but the character of the Cosmological Constant. Here we discuss this equivalence in the presence of a non-minimally coupled scalar field.
Mario Herrero-Valea +1 more
doaj +1 more source
Advanced Functional Materials, EarlyView.Versatile guanosine‐quadruplex (GQ) hydrogels are developed as dynamic biomatrices for cell culture. These scaffolds are fabricated under mild aqueous conditions, present improved stability, tunable mechanical properties within physiological ranges; fibrillar, porous microstructure, ion conductivity, and cytocompatibility.
Neha Thakur +10 more
wiley +1 more source
Unifying physics theories with a single postulate
Physics OpenHumans have developed mathematical theories to explain observed physical phenomena in nature. However, the links between these theories are not fully understood in 2024.
F. Salmon
doaj +1 more source
The history and the meaning of Einstein’s Principle of Equivalence
Science & Philosophy, 2020 We review from a historical and a didactic point of view the Equivalence Principle, which was considered by Einstein as the corner stone of his new theory of Gravitation: the General Relativity.
Antonio Feoli
doaj +1 more source
Some Thoughts on Relativity and the Flow of Time: Einstein's Equations given Absolute Simultaneity [PDF]
, 2004 The A-theory of time has intuitive and metaphysical appeal, but suffers from tension, if not inconsistency, with the special and general theories of relativity (STR and GTR).
Pitts, J. Brian
core
Topical collection: in memory of professor T Padmanabhan
, 2022 Professor Thanu Padmanabhan contributed significantly to a broad spectrum of topics in astrophysics, cosmology, and classical and quantum aspects of gravitation.
Virmani, Amitabh +3 more
core +1 more source
Advanced Healthcare Materials, EarlyView.Three‐dimensional bioprinting transforms breast cancer modeling from simple constructs into spatially organized, multicellular, perfused, and patient‐derived platforms. This review shows how bioinks, cellular composition, architecture, and flow govern tumor behavior and drug response, while revealing why complexity alone is insufficient without ...
Mustafa Nakipoglu +7 more
wiley +1 more source
The 5D Fully-Covariant Theory of Gravitation and Its Astrophysical Applications
Galaxies, 2014 In this paper, we comprehensively review the five-dimensional (5D) fully-covariant theory of gravitation developed by Zhang two decades ago and its recent applications in astrophysics and cosmology. This 5D gravity describes not only the fields, but also
Tianxi Zhang
doaj +1 more source
Mass and energy in general relativity [PDF]
, 2015 We consider the Denisov-Solov'ov example which shows that the inertial mass is not well defined in General Relativity. It is shown that the mathematical reason why this is true is a wrong application of the Stokes theorem. Then we discuss the role of the
Rodrigues Jr., Waldyr A., Bozhkov, Yuri
core +1 more source