Zobrazeno 1 - 10
of 5 702
pro vyhledávání: '"Tan, H A"'
Autor:
Terhune, J. E. S., Elwell, R., Tan, H. B. Tran, Perera, U. C., Morgan, H. W. T., Alexandrova, A. N., Derevianko, Andrei, Hudson, Eric R.
The population dynamics of the 229Th isomeric state is studied in a solid-state host under laser illumination. A photoquenching process is observed, where off-resonant vacuum-ultraviolet (VUV) radiation leads to relaxation of the isomeric state. The
Externí odkaz:
http://arxiv.org/abs/2412.08998
Autor:
Morgan, H. W. T., Tan, H. B. Tran, Elwell, R., Alexandrova, A. N., Hudson, Eric R., Derevianko, Andrei
Laser excitation of thorium-229 nuclei in doped wide bandgap crystals has been demonstrated recently, opening the possibility of developing ultrastable solid-state clocks and sensitive searches for new physics. We develop a quantitative theory of the
Externí odkaz:
http://arxiv.org/abs/2411.15641
Autor:
Morgan, H. W. T., Elwell, R., Terhune, J. E. S., Tan, H. B. Tran, Perera, U. C., Derevianko, A., Alexandrova, A. N., Hudson, E. R.
The recent laser excitation of the 229Th isomeric transition in a solid-state host opens the door for a portable solid-state nuclear optical clock. However, at present the vacuum-ultraviolet laser systems required for clock operation are not conduciv
Externí odkaz:
http://arxiv.org/abs/2410.23364
The self-consistent inclusion of plasma effects in opacity calculations is a significant modeling challenge. As density increases, such effects can no longer be treated perturbatively. Building on a recently published model that addresses this challe
Externí odkaz:
http://arxiv.org/abs/2410.05125
Autor:
Zhang, Chuankun, von der Wense, Lars, Doyle, Jack F., Higgins, Jacob S., Ooi, Tian, Friebel, Hans U., Ye, Jun, Elwell, R., Terhune, J. E. S., Morgan, H. W. T., Alexandrova, A. N., Tan, H. B. Tran, Derevianko, Andrei, Hudson, Eric R.
After nearly fifty years of searching, the vacuum ultraviolet $^{229}$Th nuclear isomeric transition has recently been directly laser excited [1,2] and measured with high spectroscopic precision [3]. Nuclear clocks based on this transition are expect
Externí odkaz:
http://arxiv.org/abs/2410.01753
Autor:
Elwell, R., Schneider, Christian, Jeet, Justin, Terhune, J. E. S., Morgan, H. W. T., Alexandrova, A. N., Tan, H. B. Tran, Derevianko, Andrei, Hudson, Eric R.
LiSrAlF$_6$ crystals doped with $^{229}$Th are used in a laser-based search for the nuclear isomeric transition. Two spectroscopic features near the nuclear transition energy are observed. The first is a broad excitation feature that produces red-shi
Externí odkaz:
http://arxiv.org/abs/2404.12311
Publikováno v:
Computers in Biology and Medicine, vol. 176, June 2024, 108605
In this work, we study various hybrid models of entropy-based and representativeness sampling techniques in the context of active learning in medical segmentation, in particular examining the role of UMAP (Uniform Manifold Approximation and Projectio
Externí odkaz:
http://arxiv.org/abs/2312.10361
Publikováno v:
Breast Cancer: Targets and Therapy, Vol Volume 16, Pp 981-991 (2024)
Yaxin Guo,1,* Jun Liao,1,* Shunian Li,1 Yiyan Shang,2 Yunxia Wang,2 Qingxia Wu,3 Yaping Wu,1 Meiyun Wang,1 Fengshan Yan,1 Hongna Tan1 1Department of Radiology, People’s Hospital of Zhengzhou University & Henan Provincial People’s Hospital
Externí odkaz:
https://doaj.org/article/7c148b8372494f90ac954e7e7f07642d
Publikováno v:
Breast Cancer: Targets and Therapy, Vol Volume 16, Pp 957-972 (2024)
Yiyan Shang,1,2,* Yunxia Wang,1,2,* Yaxin Guo,2,3 Shunian Li,2,3 Jun Liao,2,3 Menglu Hai,4 Meiyun Wang,2,3 Hongna Tan1,2 1Department of Radiology, People’s Hospital of Henan University, Zhengzhou, Henan, People’s Republic of China; 2Depar
Externí odkaz:
https://doaj.org/article/7b2ffc06353a43cda9f154c24fac884a
Publikováno v:
Journal of Inflammation Research, Vol Volume 17, Pp 9539-9547 (2024)
Liubing Li,1,* Tangdan Ding,1,2,* Qiong Shi,1,* Hongji Zhu,1,2 Qinghua Ma,1,2 Mianjing Zhou,3 Ying Yuan,4 Zhihua Wen,5 Hongxu Xu,1,2 Hongxia Tan,1 Dubo Chen1 1Department of Laboratory Medicine, The First Affiliated Hospital, Sun Yat-Sen U
Externí odkaz:
https://doaj.org/article/0d592a59008a4bffb4862154b3f535cd