Results 81 to 90 of about 242,669 (295)

$$f(\mathcal {R},\varphi ,\chi )$$ f(R,φ,χ) cosmology with Noether symmetry

European Physical Journal C: Particles and Fields, 2020
This paper is devoted to explore modified $$f(\mathcal {R})$$ f(R) theories of gravity using Noether symmetry approach. For this purpose, Friedmann–Robertson–Walker spacetime is chosen to investigate the cosmic evolution. The study is mainly divided into
M. Farasat Shamir
doaj   +1 more source

Knotlike Cosmic Strings in The Early Universe

, 2003
In this paper, the knotlike cosmic strings in the Riemann-Cartan space-time of the early universe are discussed. It has been revealed that the cosmic strings can just originate from the zero points of the complex scalar quintessence field.
] L.H. Kauffman, A. Gangui, A.A. Kozhevnikov, A.J. Niemi, A.M. Polyakov, A.M. Saitta, B. Fain, D. Rolfsen, E. Witten, J.A. Schouten, L.B. Fu, R.P. Feynman, S. Deser, S. Hanany, S.S. Chern, W.F. Pohl, Xin Liu, Y.S. Duan, Yi-shi Duan, É. Goursat   +19 more
core   +1 more source

Combining Spatial Multi‐Omics Data to Decipher Spatial Domains and Elucidate Cell Heterogeneity Based on Self‐Supervised Graph Learning

Advanced Science, EarlyView.
A self‐supervised multi‐view graph fusion framework integrates spatial multi‐omics, excelling in domain identification and denoising. It reconstructs spatial pseudo‐expression, jointly analyzes multi‐omics data, infers RNA velocity, predicts spatial omics features from single‐cell multi‐omics, and detects spatially dark genes and transcription factors,
Yuejing Lu, Rui Qiao, Ying Li, Junhong Li, Nuoya Yue, Jing Ge, Jiao Wang, Luonan Chen, Peiluan Li   +8 more
wiley   +1 more source

Standard and non-standard primordial neutrinos [PDF]

, 2006
The standard cosmological model predicts the existence of a cosmic neutrino background with a present density of about 110 cm^{-3} per flavour, which affects big-bang nucleosynthesis, cosmic microwave background anisotropies, and the evolution of large ...
Hannestad S, P D Serpico, Seljak U Slosar A McDonald P, Serpico P, Spergel D N   +4 more
core   +4 more sources

Decoding Spatial Heterogeneity and Multi‐Omics Regulation with Hierarchical Graph Learning

Advanced Science, EarlyView.
ABSTRACT Recent advances in spatial multi‐omics technologies have enabled the simultaneous profiling of multiple molecular layers within the same tissue slice, providing unprecedented opportunities to investigate tissue spatial organization. However, most existing computational methods identify spatial domains in a purely data‐driven manner, rarely ...
Jiazhou Chen, Jiahui Xie, Yi Liao, Junyu Li, Longqi Liu, Xin Gao, Hongmin Cai   +6 more
wiley   +1 more source

High-Redshift Quasars at z ≥ 3—III: Parsec-Scale Jet Properties from Very Long Baseline Interferometry Observations

Universe
High-redshift active galactic nuclei (AGN) provide key insights into early supermassive black hole growth and cosmic evolution. This study investigates the parsec-scale properties of 86 radio-loud quasars at z ≥ 3 using very long baseline interferometry (
Shaoguang Guo, Tao An, Yuanqi Liu, Chuanzeng Liu, Zhijun Xu, Yulia Sotnikova, Timur Mufakharov, Ailing Wang   +7 more
doaj   +1 more source

Integrating Automated Electrochemistry and High‐Throughput Characterization with Machine Learning to Explore Si─Ge─Sn Thin‐Film Lithium Battery Anodes

Advanced Energy Materials, Volume 15, Issue 11, March 18, 2025.
A closed‐loop, data‐driven approach facilitates the exploration of high‐performance Si─Ge─Sn alloys as promising fast‐charging battery anodes. Autonomous electrochemical experimentation using a scanning droplet cell is combined with real‐time optimization to efficiently navigate composition space.
Alexey Sanin, Jackson K. Flowers, Tobias H. Piotrowiak, Frederic Felsen, Leon Merker, Alfred Ludwig, Dominic Bresser, Helge Sören Stein   +7 more
wiley   +1 more source

Star Formation History up to z = 7.4: Implications for Gamma-Ray Bursts and the Cosmic Metallicity Evolution

, 2008
The current Swift sample of gamma-ray bursts (GRBs) with measured redshifts allows to test the assumption that GRBs trace the star formation in the Universe.
Adelberger, Band, Berger, Berger, Bloom, Bloom, Bouwens, Bouwens, Bouwens, Bromm, Bromm, Bunker, Butler, Cabrera, Calzetti, Campana, Caputi, Castro-Tirado, Cen, Chapman, Ciardi, Cobb, Cobb, Cole, Conselice, Coward, Coward, Crowther, Crowther, Daigne, Della Valle, Drozdovsky, Erb, Fiore, Friedman, Fruchter, Fynbo, Fynbo, Fynbo, Fynbo, Galama, Gallazzi, Gallerani, Gehrels, Giavalisco, Gorosabel, Guetta, Guetta, Guetta, Harrison, Hirschi, Hopkins, Jakobsson, Kann, Kennicutt, Kewley, Kewley, Kewley, Kistler, Kobayashi, Kobulnicky, Kocevski, Kulkarni, Kulkarni, Kulkarni, Lamb, Langer, Le, Le Floc'h, Le Floc'h, Li, Li, Li-Xin Li, Liang, MacFadyen, MacFadyen, Mao, Metzger, Meurer, Modjaz, Mészáros, Nagamine, Nandra, Naoz, Natarajan, Nuza, Ouchi, Paczyński, Panter, Perley, Pettini, Pian, Piran, Porciani, Price, Prochaska, Prochaska, Prochaska, Prochter, Pérez-González, Péroux, Rao, Reddy, Reddy, Rol, Salpeter, Salvaterra, Savaglio, Savaglio, Savaglio, Schaefer, Schiminovich, Soderberg, Soderberg, Stanek, Stanek, Stanway, Steidel, Steidel, Sudilovsky, Totani, Totani, van Paradijs, Vink, Vink, Vreeswijk, Wainwright, Watson, Wijers, Wolf, Wolfe, Woosley, Woosley, Yan, Yoon, Yoon, Yüksel, Zhang, Zhang, Zhang   +139 more
core   +1 more source

Asking the 5 W's for designing next‐generation bioprocessing

AIChE Journal, EarlyView.
Abstract Biotechnology is expanding beyond traditional, centralized fermentation and toward next‐generation bioprocessing paradigms that emphasize flexible deployment outside the laboratory with application‐specific performance. However, many bioprocesses fail to translate beyond proof‐of‐concept into industrially viable systems because early design ...
Sangdo Yook, Karoline Maria Vieira Nogueira, Raj Sukumar, Jenna Miller, Hal S. Alper   +4 more
wiley   +1 more source

An Illuminating Physical View on the Principles of “3 Generations” Structure of Elementary Particles, and on Evolution of Universe–Energy Basic State Field of the Universe (IV)

Reports in Advances of Physical Sciences
In this paper, we review the history research on the principles of “3 generations” structure of elementary particles, including Steven Weinberg’s basic physical ideas on the Standard Model of elementary particles, and Barr and Zee’s research and so on ...
Xiaodong Yang, Yuchen Yang, Luo Zhen, Yuanbo Bi   +3 more
doaj   +1 more source