Zobrazeno 1 - 10
of 342 673
pro vyhledávání: '"R Yang"'
Chern-Simons theory with certain gauge groups is known to be equivalent to a first-order formulation of three-dimensional Einstein gravity with a cosmological constant, where both are purely topological. Here, we extend this correspondence to theorie
Externí odkaz:
http://arxiv.org/abs/2408.14228
Autor:
Assimos, T. S., Pereira Jr, A. D., Santos, T. R. S., Sobreiro, R. F., Tomaz, A. A., Otoya, V. J. Vasquez
Publikováno v:
Int.J.Mod.Phys. D26 (2017) no.08, 1750087
From pure Yang-Mills action for the $SL(5,\mathbb{R})$ group in four Euclidean dimensions we obtain a gravity theory in the first order formalism. Besides the Einstein-Hilbert term, the effective gravity has a cosmological constant term, a curvature
Externí odkaz:
http://arxiv.org/abs/1305.1468
Autor:
Yang, Yi, Yeung, Wai Bong
We show that the GL(4 R) gauge theory of gravity will admit an exponentially expanding solution for the primordial evolution of the Universe. This inflationary phase of the Universe is driven by a rapidly changing GL(4 R) gauge field configuration. N
Externí odkaz:
http://arxiv.org/abs/1303.3801
Autor:
Hela Koka, Weiyin Zhou, Mary L. McMaster, Jiwei Bai, Wen Luo, Alyssa Klein, Tongwu Zhang, Xing Hua, Xin Li, Difei Wang, Yujia Xiong, Kristine Jones, Aurelie Vogt, Belynda Hicks, Dilys Parry, Alisa M. Goldstein, Xiaohong R. Yang
Publikováno v:
Acta Neuropathologica Communications, Vol 12, Iss 1, Pp 1-9 (2024)
Abstract Chordoma is a rare bone cancer with variable clinical outcomes. Here, we recruited 184 sporadic chordoma patients from the US and Canada and collected their clinical and treatment data. The average age at diagnosis was 45.5 years (Range 5–
Externí odkaz:
https://doaj.org/article/85edb55c6c274b2e85c9cce9b31a7e2e
Autor:
Waruiru Mburu, Changyuan Guo, Yuan Tian, Hela Koka, Sheng Fu, Ning Lu, Erni Li, Jing Li, Renata Cora, Ariane Chan, Jennifer L. Guida, Hyuna Sung, Gretchen L. Gierach, Mustapha Abubakar, Kai Yu, Xiaohong R. Yang
Publikováno v:
Breast Cancer Research, Vol 26, Iss 1, Pp 1-12 (2024)
Abstract Background Higher mammographic density (MD), a radiological measure of the proportion of fibroglandular tissue in the breast, and lower terminal duct lobular unit (TDLU) involution, a histological measure of the amount of epithelial tissue i
Externí odkaz:
https://doaj.org/article/da2d57df18654fb99e53fd1aa7049e16
Autor:
L. Piermattei, M. Zemp, C. Sommer, F. Brun, M. H. Braun, L. M. Andreassen, J. M. C. Belart, E. Berthier, A. Bhattacharya, L. Boehm Vock, T. Bolch, A. Dehecq, I. Dussaillant, D. Falaschi, C. Florentine, D. Floricioiu, C. Ginzler, G. Guillet, R. Hugonnet, M. Huss, A. Kääb, O. King, C. Klug, F. Knuth, L. Krieger, J. La Frenierre, R. McNabb, C. McNeil, R. Prinz, L. Sass, T. Seehaus, D. Shean, D. Treichler, A. Wendt, R. Yang
Publikováno v:
The Cryosphere, Vol 18, Pp 3195-3230 (2024)
Observations of glacier mass changes are key to understanding the response of glaciers to climate change and related impacts, such as regional runoff, ecosystem changes, and global sea level rise. Spaceborne optical and radar sensors make it possible
Externí odkaz:
https://doaj.org/article/3d24e47842a943a1bec0821da8ba2b07
Autor:
Emma A. Schindler, Cristiane Takita, Fernando Collado-Mesa, Isildinha M. Reis, Wei Zhao, George R. Yang, Laura G. Acosta, Jennifer J. Hu
Publikováno v:
BMC Women's Health, Vol 24, Iss 1, Pp 1-11 (2024)
Abstract Background Obesity is associated with an increased breast cancer risk in postmenopausal women and may contribute to worse outcomes. Black women experience higher obesity and breast cancer mortality rates than non-Black women. We examined ass
Externí odkaz:
https://doaj.org/article/fef459027b494915b0ce7f16cc5780c7
Publikováno v:
Earth Surface Dynamics, Vol 12, Pp 783-800 (2024)
Landscapes are sculpted by a complex response of surface processes to external forcings, such as climate and tectonics. Several major river captures have been documented in the Hengduan Mountains, leading to the hypothesis that the region experiences
Externí odkaz:
https://doaj.org/article/3dde572a1e3a4a84b7c5f5c23c8fb3f0
Autor:
Qian Liu, Mingxuan Li, Yujia Xiong, Yutao Shen, Tianshun Ma, Tianhao Zhang, Xiaohong R. Yang, Yazhuo Zhang, Jiwei Bai
Publikováno v:
Genes and Diseases, Vol 11, Iss 5, Pp 101133- (2024)
Externí odkaz:
https://doaj.org/article/9f83c46fcfc84b18ac3e348c930d27f8
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