Results 81 to 90 of about 632,753 (317)
Advanced Science, EarlyView.ABSTRACT Precise transgene‐free gene upregulation remains a challenge in crop biotechnology, as conventional enhancers often exceed CRISPR‐mediated knock‐in size constraints and face regulatory hurdles. Here we establish a foundational cross‐species resource of compact transcriptional enhancers developed via STEM‐seq, a high‐throughput screening ...
Qi Yao +14 more
wiley +1 more source
Calculation of radar signals delay to second order in the frame of the General Relativity Theory
ACI Avances en Ciencias e Ingenierías, 2014 From the Schwarzschild metric, the light delay due to a gravitational field is calculated to second order approximation in the gravitational potential. We analize the contribution of the second order terms for strong gravitational fields as the generated
Joaquín Valerio Grefa, Carlos A. Marín
doaj +1 more source
Where Does the Physics of Extreme Gravitational Collapse Reside [PDF]
, 2015 The gravitational collapse of massive stars serves to manifest the most severe deviations of general relativity with respect to Newtonian gravity: the formation of horizons and spacetime singularities.
C. Barcel'o, R. Carballo-Rubio, L. Garay
semanticscholar +1 more source
Advanced Science, EarlyView.An ionic liquid‐based shear‐thickening fluid (ILSTF) exhibits lubricated dynamics from strong shear thickening to impact‐triggered jamming. A persistent nanometric solvation layer around silica governs both the shear thickening saturation in rheology and jamming front propagation under dynamic impact compression.
Yiran Wu +6 more
wiley +1 more source
The Astrophysical Journal LettersGW231123, the most massive binary black hole (BH) merger observed to date, involves component BHs with masses inside the pair-instability mass gap and unusually high spins.
Ore Gottlieb +5 more
doaj +1 more source
Collapsing dust thin shells in Einstein–Gauss–Bonnet gravity
European Physical Journal C: Particles and Fields, 2022 We investigate gravitational collapse of a spherically symmetric thin shell in the Einstein–Gauss–Bonnet (EGB) gravity. Under the recently proposed 4D limit, we find that the collapsing shell will be bounced back at a small radius, without forming a ...
Yong-Ming Huang, Yu Tian, Xiao-Ning Wu
doaj +1 more source
Gravity‐Tolerant In‐Flight 3D Bioprinting Enabled by Stereolithography for Space Tissue Engineering
Advanced Science, EarlyView.A flight‐compliant, closed stereolithographic 3D bioprinting system enables robust fabrication of acellular and cell‐laden hydrogel constructs under varying gravitational conditions, including microgravity and hypergravity phases. Printed structures retain dimensional fidelity and high‐resolution features, while cell viability remains high ...
Bianca Lemke +8 more
wiley +1 more source
Complexity driven by anisotropy, inhomogeneity and dissipation
European Physical Journal C: Particles and FieldsThis work presents a detailed analysis of the gravitational collapse of a shear-free radiating, spherically symmetric imperfect fluid. The interior spacetime, characterized by dissipative and anisotropic pressure processes, is matched to an exterior ...
Lindani C. Majozi +3 more
doaj +1 more source
Gravitational Collapse in Gravity's Rainbow [PDF]
, 2015 In this paper, we will analyze the gravitational collapse in the framework of gravity's rainbow. We will demonstrate that the position of the horizon for a particle inside the black hole depends on the energy of that particle.
A. Ali +3 more
semanticscholar +1 more source
Critical phenomena in gravitational collapse [PDF]
Banach Center Publications, 1997 AbstractAs first discovered by Choptuik, the black hole threshold in the space of initial data for general relativity shows both surprising structure and surprising simplicity. Universality, power-law scaling of the black hole mass, and scale echoing have given rise to the term “critical phenomena”.
openaire +10 more sources