31,442 research outputs found
Shang han liu jing ding fa
No full text陳澈撰 ; [劉晚榮輯]. 經絡歌訣 / 汪昂, [劉晚榮輯]. 傷寒六經定法 / 舒詔著 ; [劉晚榮輯]Chen Che zhuan ; [Liu Wanrong ji]. Jing luo ge jue / Wang Ang, [Liu Wanrong ji]. Shang han liu jing ding fa / Shu Zhao zhu ; [Liu Wanrong ji
Testing the rotation versus merger scenario in the galaxy cluster Abell 2107
No full textWe search for global rotation of the intracluster medium in the galaxy cluster Abell 2107, where previous studies have detected rotational motion in the member galaxies with a high-significance level. By fitting the centroid of the iron Kα line complex at 6.7–6.9 keV rest frame in Chandra ACIS-I spectra, we identify the possible rotation axis with the line that maximizes the difference between the emission-weighted spectroscopic redshift measured in the two halves defined by the line itself. Then, we measure the emission-weighted redshift in linear regions parallel to the preferred rotation axis, and find a significant gradient as a function of the projected distance from the rotation axis, compatible with a rotation pattern with maximum tangential velocity vmax = 1380 ± 600 km s−1 at a radius λ0 ∼ 160 kpc. This result, if interpreted in the framework of hydrostatic equilibrium, as suggested by the regular morphology of Abell 2107, would imply a large mass correction of the order of ∆M = (6 ± 4) × 1013 M☉ at ∼160 kpc, which is incompatible with the cluster morphology itself. A more conservative interpretation may be provided by an unnoticed off-centre, head-on collision between two comparable haloes. Our analysis confirms the peculiar dynamical nature of the otherwise regular cluster Abell 2107, but is not able to resolve the rotation versus merger scenario, a science case that can be addressed by the next-generation X-ray facilities carrying X-ray bolometers on board
sj-pdf-1-ang-10.1177_00033197211031323 – Supplemental Material for Regional Differences in the Ratio of Observed and Expected In-hospital Mortality for Acute Coronary Syndrome Patients in China: The Improving Care for Cardiovascular Disease in China-Acute Coronary Syndrome Project Analysis
No full textSupplemental Material, sj-pdf-1-ang-10.1177_00033197211031323 for Regional Differences in the Ratio of Observed and Expected In-hospital Mortality for Acute Coronary Syndrome Patients in China: Care for Cardiovascular Disease in China-Acute Coronary Syndrome Project Analysis by Jing Wen Yong, Yue Yan Xing, Mengge Zhou, Na Yang, Yong Chen Hao, Jing Liu, Jun Liu, Dong Zhao, Yujie Zhou, Jian Wang and CCC-ACS in Angiology</p
Liu Kang
No full textLiu Kang: Essays on Art and Culture is a testament to the inexorable passion of an artist who knew no boundaries. This collection of essays, which Liu Kang wrote over 44 years, offers an insight into the artist’s myriad interests as well as his contributions as a first generation Nanyang artist and art educator. Translated into English for this volume, Liu Kang’s essays are accompanied by commentaries and photographs of the artist-author and his subjects
The nature of hot gas in galaxy clusters: exploring the chemical and dynamical properties of the intracluster medium
No full textIn this Thesis I focus on the chemical enrichment of galaxy clusters by tracing the evolution of iron in the intracluster medium (ICM) through high-angular resolution X-ray observations from the Chandra X-ray Observatory. The detailed search and modelization of the emission lines of iron also allow me to perform dynamical studies of the ICM by measuring its velocity through the accurate position of the line centroid in X-ray spectra extracted from different regions. Eventually, the chemical, thermodynamical and dynamical properties of the ICM investigated in this work can be put together in a unique framework in the context of the cosmological evolution of galaxy clusters
COMPUTER SIMULATIONS OF AUTOMOTIVE DISC BRAKE SQUEAL
No full textMaster'sMASTER OF SCIENCE IN COMPUTATIONAL ENGINEERINGDissertation Supervisor: 1. Prof. Liu Gui-Rong, SMA Fellow, NUS. Co-Mentors (Sunstar Logistic): 1 Mr Ang Kheng Heng 2. Mr Goh Meng Chuan 3. Mr Hii King Siew 4. Mr Tan Wey Chi
sj-pdf-1-ang-10.1177_00033197221087778 – Supplemental Material for High-Risk Culprit Plaque Predicts Cardiovascular Outcomes Independently of Plaque Rupture in ST-Segment Elevation Myocardial Infarction: Insight From Optical Coherence Tomography
No full textSupplemental Material, sj-pdf-1-ang-10.1177_00033197221087778 for High-Risk Culprit Plaque Predicts Cardiovascular Outcomes Independently of Plaque Rupture in ST-Segment Elevation Myocardial Infarction: Insight From Optical Coherence Tomography by Ying Wang, Xiaoxiao Zhao, Peng Zhou, Chen Liu, Zhiyong Liao, Xiaoqing Wang, Shaodi Yan, Zhaoxue Sheng, Jiannan Li, Jinying Zhou, Runzhen Chen, Yi Chen, Li Song, Hanjun Zhao and Hongbing Yan in Angiology</p
sj-pdf-1-ang-10.1177_00033197221091315 – Supplemental Material for Relation Between New York Heart Association Functional Class and Remnant Cholesterol, and Non-high Density Lipoprotein Cholesterol in Coronary Heart Disease Patients With Type 2 Diabetes Mellitus
No full textSupplemental Material, sj-pdf-1-ang-10.1177_00033197221091315 for Relation Between New York Heart Association Functional Class and Remnant Cholesterol, and Non-high Density Lipoprotein Cholesterol in Coronary Heart Disease Patients With Type 2 Diabetes Mellitus by Qi Cheng, Zhu Li, Xu Wang, Shuo Wang, Yijia Liu, Mengnan Huang, Yue Li, Xiaoxue Xue, Huaien Bu, Rongrong Yang, Yilan Xu, Lin Li, Shan Gao, Yanchao Zheng and Chunquan Yu in Angiology</p
Primulina cataractarum sp. nov. (Gesneriaceae) from limestone landform in Southern Hunan, China
No full textDing, Cong, Liu, Ang, Yu, Xun-Lin, Zhang, Chun-Ping (2021): Primulina cataractarum sp. nov. (Gesneriaceae) from limestone landform in Southern Hunan, China. Phytotaxa 511 (1): 51-64, DOI: 10.11646/phytotaxa.511.1.4, URL: http://dx.doi.org/10.11646/phytotaxa.511.1.
On the origin of central abundance drops in the intracluster medium of galaxy groups and clusters
No full textA central drop of ICM Fe abundance has been observed in several cool-core clusters. It has been proposed that this abundance drop may be due, at least partially, to the depletion of Fe into dust grains in the central, high-density regions. According to this scenario, noble gas elements such as Ar and Ne are not expected to be depleted into dust, and therefore should not show any drop, but follow the general increase of metal abundance towards the centre. In this work, we test this scenario by measuring with Chandra data the radial profiles of Ar and Ne in a sample of 12 groups and clusters where a central drop in Fe abundance has been detected. We confirm the presence of the Fe drop in 10 out of 12 clusters at more than 2σ c.l., and 4 Ar drops with similar significance. We also find 4 Ne drops, with the caveat that Ne abundance measurement from CCD spectra suffers from systematics not completely under control. Our results are consistent with an abundance drop common to the three elements. When comparing the profiles, we find that, on average, the abundance profiles of Ar and Ne are significantly higher than Fe and steeper towards the centre, while they all gradually become consistent with solar composition at r ≥ 0.05r 500 . We also check that Si and S profiles are mostly consistent with Fe. This result confirms a scenario in which some fraction of Fe is depleted into dust grains in the inner regions, although the global central abundance drop is mostly due to mechanical processes, like the displacement of metal-rich ICM from the very centre to larger radii by AGN-driven feedback. Finally, we report the detection of an Fe drop in the cluster MACSJ1423.8+2404 at z = 0.543, showing that this feature appears early on in cool-core clusters
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