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133 results on '"Chen, Hao-Yan"'

1. One-off and Repeating Fast Radio Bursts: A Statistical Analysis

Author

Chen, Hao-Yan, Gu, Wei-Min, Sun, Mouyuan, and Yi, Tuan

Subjects
Astrophysics - High Energy Astrophysical Phenomena
Abstract

According to the number of detected bursts, fast radio bursts (FRBs) can be classified into two categories, i.e., one-off FRBs and repeating ones. We make a statistical comparison of these two categories based on the first FRB catalog of the Canadian Hydrogen Intensity Mapping Experiment Fast Radio Burst Project. Using the Anderson-Darling, Kolmogrov-Smirnov, and Energy statistic tests, we find significant statistical differences ($p$-value $<$ 0.001) of the burst properties between the one-off FRBs and the repeating ones. More specifically, after controlling for distance, we find that the peak luminosities of one-off FRBs are, on average, higher than the repeating ones; the pulse temporal widths of repeating FRBs are, on average, longer than the one-off ones. The differences indicate that these two categories could have distinct physical origins. Moreover, we discuss the sub-populations of FRBs and provide statistical evidence to support the existence of sub-populations in one-off FRBs and in repeating ones., Comment: 10 pages, 6 figures, accepted for publication in ApJ

Published
2022
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2. Repeating Ultraluminous X-ray Bursts and Repeating Fast Radio Bursts: A Possible Association?

Author

Chen, Hao-Yan, Gu, Wei-Min, Fu, Jin-Bo, Weng, Shan-Shan, Wang, Junfeng, and Sun, Mouyuan

Subjects
Astrophysics - High Energy Astrophysical Phenomena
Abstract

Ultraluminous X-ray bursts (hereafter ULXBs) are ultraluminous X-ray flares with a fast rise ($\sim$ one minute) and a slow decay ($\sim$ an hour), which are commonly observed in extragalactic globular clusters. Most ULXBs are observational one-off bursts, whereas five flares from the same source in NGC 5128 were discovered by Irwin et al. (2016). In this Letter, we propose a neutron star (NS)-white dwarf (WD) binary model with super-Eddington accretion rates to explain the repeating behavior of the ULXB source in NGC 5128. With an eccentric orbit, the mass transfer occurs at the periastron where the WD fills its Roche lobe. The ultraluminous X-ray flares can be produced by the accretion column around the NS magnetic poles. On the other hand, some repeating fast radio bursts (hereafter FRBs) were also found in extragalactic globular clusters. Repeating ULXBs and repeating FRBs are the most violent bursts in the X-ray and radio bands, respectively. We propose a possible association between the repeating ULXBs and the repeating FRBs. Such an association is worth further investigation by follow-up observations on nearby extragalactic globular clusters., Comment: 8 pages, 3 figures, accepted for publication in ApJ

Published
2022
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3. Effects of Gravitational Wave Radiation of Eccentric Neutron Star-White Dwarf Binaries on the Periodic Activity of Fast Radio Burst Sources

Author

Lin, Yi-Qing, Chen, Hao-Yan, Gu, Wei-Min, and Yi, Tuan

Subjects
Astrophysics - High Energy Astrophysical Phenomena
Abstract

We revisit the eccentric neutron star (NS)-white dwarf (WD) binary model for the periodic activity of fast radio burst (FRB) sources, by including the effects of gravitational wave (GW) radiation. In this model, the WD fills its Roche lobe at the periastron and mass transfer occurs from the WD to the NS. The accreted materials can be fragmented and arrive at the NS episodically, resulting in multiple bursts through curvature radiation. Consequently, the WD may be kicked away owing to the conservation of angular momentum. To initiate the next mass transfer, the WD has to refill its Roche lobe through GW radiation. In this scenario, whether the periodic activity can show up relies on three timescales, i.e., the orbital period $P_{\rm orb}$, the timescale $T_{\rm GW}$ for the Roche lobe to be refilled, and the time span $T_{\rm frag}$ for all the episodic events corresponding to each mass transfer process. Only when the two conditions $T_{\rm GW} \gtrsim P_{\rm orb}$ and $T_{\rm frag} < P_{\rm orb}$ are both satisfied, the periodic activity will manifest itself and the period should be equal to $P_{\rm orb}$. In this spirit, the periodic activity is more likely to show up for relatively long periods ($P_{\rm orb} \gtrsim$ several days). Thus, it is reasonable that FRBs 180916 and 121102, the only two sources having been claimed to manifest periodic activity, both correspond to relatively long periods., Comment: 7 pages, 2 figures, accepted for pubilcation in ApJ

Published
2022
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4. Reconciling the 16.35-day period of FRB 20180916B with jet precession

Author

Chen, Hao-Yan, Gu, Wei-Min, Sun, Mouyuan, Liu, Tong, and Yi, Tuan

Subjects
Astrophysics - High Energy Astrophysical Phenomena
Abstract

A repeating fast radio burst (FRB), FRB 20180916B (hereafter FRB 180916), was reported to have a 16.35-day period. This period might be related to a precession period. In this paper, we investigate two precession models to explain the periodic activity of FRB 180916. In both models, the radio emission of FRB 180916 is produced by a precessing jet. For the first disk-driven jet precession model, an extremely low viscous parameter (i.e., the dimensionless viscosity parameter $\alpha \lesssim 10^{-8}$) is required to explain the precession of FRB 180916, which implies its implausibility. For the second tidal force-driven jet precession model, we consider a compact binary consists of a neutron star/black hole and a white dwarf; the white dwarf fills its Roche lobe and mass transfer occurs. Due to the misalignment between the disk and orbital plane, the tidal force of the white dwarf can drive jet precession. We show that the relevant precession periods are several days to hundreds of days, depending on the specific accretion rates and component masses. The duration of FRB 180916 generation in the binary with extremely high accretion rate will be several thousand years., Comment: 12 pages, 4 figures, accepted for publication in ApJ

Published
2021
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7. Data from miR-508 Defines the Stem-like/Mesenchymal Subtype in Colorectal Cancer

Author

Yan, Ting-Ting, primary, Ren, Lin-Lin, primary, Shen, Chao-Qin, primary, Wang, Zhen-Hua, primary, Yu, Ya-Nan, primary, Liang, Qian, primary, Tang, Jia-Yin, primary, Chen, Ying-Xuan, primary, Sun, Dan-Feng, primary, Zgodzinski, Witold, primary, Majewski, Marek, primary, Radwan, Piotr, primary, Kryczek, Ilona, primary, Zhong, Ming, primary, Chen, Jinxian, primary, Liu, Qiang, primary, Zou, Weiping, primary, Chen, Hao-Yan, primary, Hong, Jie, primary, and Fang, Jing-Yuan, primary

Published
2023
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8. Supplementary Tables from miR-508 Defines the Stem-like/Mesenchymal Subtype in Colorectal Cancer

Author

Yan, Ting-Ting, primary, Ren, Lin-Lin, primary, Shen, Chao-Qin, primary, Wang, Zhen-Hua, primary, Yu, Ya-Nan, primary, Liang, Qian, primary, Tang, Jia-Yin, primary, Chen, Ying-Xuan, primary, Sun, Dan-Feng, primary, Zgodzinski, Witold, primary, Majewski, Marek, primary, Radwan, Piotr, primary, Kryczek, Ilona, primary, Zhong, Ming, primary, Chen, Jinxian, primary, Liu, Qiang, primary, Zou, Weiping, primary, Chen, Hao-Yan, primary, Hong, Jie, primary, and Fang, Jing-Yuan, primary

Published
2023
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9. Supplementary Figures from miR-508 Defines the Stem-like/Mesenchymal Subtype in Colorectal Cancer

Author

Yan, Ting-Ting, primary, Ren, Lin-Lin, primary, Shen, Chao-Qin, primary, Wang, Zhen-Hua, primary, Yu, Ya-Nan, primary, Liang, Qian, primary, Tang, Jia-Yin, primary, Chen, Ying-Xuan, primary, Sun, Dan-Feng, primary, Zgodzinski, Witold, primary, Majewski, Marek, primary, Radwan, Piotr, primary, Kryczek, Ilona, primary, Zhong, Ming, primary, Chen, Jinxian, primary, Liu, Qiang, primary, Zou, Weiping, primary, Chen, Hao-Yan, primary, Hong, Jie, primary, and Fang, Jing-Yuan, primary

Published
2023
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10. Supplementary Figure Legends from miR-508 Defines the Stem-like/Mesenchymal Subtype in Colorectal Cancer

Author

Yan, Ting-Ting, primary, Ren, Lin-Lin, primary, Shen, Chao-Qin, primary, Wang, Zhen-Hua, primary, Yu, Ya-Nan, primary, Liang, Qian, primary, Tang, Jia-Yin, primary, Chen, Ying-Xuan, primary, Sun, Dan-Feng, primary, Zgodzinski, Witold, primary, Majewski, Marek, primary, Radwan, Piotr, primary, Kryczek, Ilona, primary, Zhong, Ming, primary, Chen, Jinxian, primary, Liu, Qiang, primary, Zou, Weiping, primary, Chen, Hao-Yan, primary, Hong, Jie, primary, and Fang, Jing-Yuan, primary

Published
2023
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11. Supplementary Methods from miR-508 Defines the Stem-like/Mesenchymal Subtype in Colorectal Cancer

Author

Yan, Ting-Ting, primary, Ren, Lin-Lin, primary, Shen, Chao-Qin, primary, Wang, Zhen-Hua, primary, Yu, Ya-Nan, primary, Liang, Qian, primary, Tang, Jia-Yin, primary, Chen, Ying-Xuan, primary, Sun, Dan-Feng, primary, Zgodzinski, Witold, primary, Majewski, Marek, primary, Radwan, Piotr, primary, Kryczek, Ilona, primary, Zhong, Ming, primary, Chen, Jinxian, primary, Liu, Qiang, primary, Zou, Weiping, primary, Chen, Hao-Yan, primary, Hong, Jie, primary, and Fang, Jing-Yuan, primary

Published
2023
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12. 99mTc-HYNIC-TOC scintigraphy in evaluation of active Graves’ ophthalmopathy (GO)

Author

Sun, Hua, Jiang, Xu-Feng, Wang, Shu, Chen, Hao-Yan, Sun, Jiao, Li, Pei-Yong, Ning, Guang, and Zhao, Yong-Ju

Abstract

Abstract: Objective: A promising radiopharmaceutical 99mTc-HYNIC-TOC (99mTc-HYNIC-Octreotide) can be applied for somatostatin receptor scintigraphy with the potential to replace Indium-111 labeled somatostatin analogus. Here we evaluate whether orbital 99mTc-HYNIC-TOC scintigraphy can be used as a Graves’ ophthalmopathy (GO) activity parameter to predict the retrobulbar irradiation response. Methods: Orbital 99mTc-HYNIC-TOC scintigraphy was performed on 14 consecutive patients demonstrating moderated to severe Graves’ ophthalmopathy. The patients were treated with retrobulbar irradiation following the octreoscan and the response to this therapy was assessed at 3 months after the start of treatment. The orbital 99mTc-HYNIC-TOC uptake was calculated to assess the effects of treatment. Results: Among the 14 GO patients, eight (57.1%) responded to retrobulbar radiotherapy; six (42.9%) showed no change. We compared the eight responders and six non-responders in terms of orbital 99mTc-HYNIC-TOC uptake, using the orbital/occipital ratio. On the 4-h 99mTc-HYNIC-TOC scintigraphy, responders had a higher orbital/occipital uptake ratio than the no-responders (P = 0.001). A significant correlation was found between the orbital/occipital ratio and the clinical activity score (CAS) (P = 0.034). The Receiving-Operator-Characteristic curve showed the best threshold for discriminating active and inactive disease was 1.40 (sensitivity, 100%; specificity, 83.3%). In the responders group, all these eight patients had positive scintigraphy. While there were five patients who had negative scintigraphy in the non-responders group. Conclusion: Orbital 99mTc-HYNIC-TOC scintigraphy can be a useful method for the estimation of disease activity and prediction the response to subsequent radiotherapy in GO patient. And the patients with positive octreoscan were more likely to respond to irradiation.

Published
2024
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24. Effects of Gravitational-wave Radiation of Eccentric Neutron Starâ€"White Dwarf Binaries on the Periodic Activity of Fast Radio Burst Sources.

Author

Lin, Yi-Qing, Chen, Hao-Yan, Gu, Wei-Min, and Yi, Tuan

Subjects
ROCHE equipotentials, RADIATION, GRAVITATIONAL waves, WHITE dwarf stars, NEUTRON stars, BINARY systems (Astronomy), MASS transfer
Abstract

We revisit the eccentric neutron star (NS)â€"white dwarf (WD) binary model for the periodic activity of fast radio burst (FRB) sources, by including the effects of gravitational-wave (GW) radiation. In this model, the WD fills its Roche lobe at the periastron and mass transfer occurs from the WD to the NS. The accreted materials can be fragmented and arrive at the NS episodically, resulting in multiple bursts through curvature radiation. Consequently, the WD may be kicked away owing to the conservation of angular momentum. To initiate the next mass transfer, the WD has to refill its Roche lobe through GW radiation. In this scenario, whether the periodic activity can show up relies on three timescales, i.e., the orbital period P orb, the timescale T GW for the Roche lobe to be refilled, and the time span T frag for all the episodic events corresponding to each mass-transfer process. Only when the two conditions T GW ≲ P orb and T frag < P orb are both satisfied, the periodic activity will manifest itself and the period should be equal to P orb. In this spirit, the periodic activity is more likely to show up for relatively long periods (P orb ≳ several days). Thus, it is reasonable that FRBs 180916 and 121102, the only two sources having been claimed to manifest periodic activity, both correspond to relatively long periods. [ABSTRACT FROM AUTHOR]

Published
2022
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32. miR-508 Defines the Stem-like/Mesenchymal Subtype in Colorectal Cancer

Author

Yan, Ting-Ting, primary, Ren, Lin-Lin, additional, Shen, Chao-Qin, additional, Wang, Zhen-Hua, additional, Yu, Ya-Nan, additional, Liang, Qian, additional, Tang, Jia-Yin, additional, Chen, Ying-Xuan, additional, Sun, Dan-Feng, additional, Zgodzinski, Witold, additional, Majewski, Marek, additional, Radwan, Piotr, additional, Kryczek, Ilona, additional, Zhong, Ming, additional, Chen, Jinxian, additional, Liu, Qiang, additional, Zou, Weiping, additional, Chen, Hao-Yan, additional, Hong, Jie, additional, and Fang, Jing-Yuan, additional

Published
2018
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34. A Financial Analysis of Several Air Conditioning Systems with Different Habitable Area in Typical Cities

Author

Yan Ting Wang, Hua Zhang, Chen Hao Yan, and Hai Tao Zhang

Subjects
Engineering, law, Air conditioning, business.industry, General Engineering, Environmental engineering, Financial analysis, Economic shortage, Low-carbon economy, Environmental economics, business, Heat pump, law.invention
Abstract

Air conditioning is widely used nowadays. It brings comfortable life to us while gives some problems. Regional shortage of power supply has a great deal to do with the extensive use of air conditioner for long time. Against the background of low carbon economy, this paper choose 3 room types of 4 typical cities which have different habitable area and carry out a financial analysis of 4 types of air conditioning system(northern city has 5 types). So we’ll have a comprehensive and intuitive understand of economy of typical air conditioning system. It could help the selection of air conditioning system of different area and make good use of energy.

Published
2012

37. High Expression of FAM83B Predicts Poor Prognosis in Patients with Pancreatic Ductal Adenocarcinoma and Correlates with Cell Cycle and Cell Proliferation

Author

Shen, Chao-qin, primary, Yan, Ting-Ting, additional, Liu, Wei, additional, Zhu, Xiao-qiang, additional, Tian, Xiang-long, additional, Fu, Xue-liang, additional, Hua, Rong, additional, Zhang, Jun-feng, additional, Huo, Yan-miao, additional, Liu, De-jun, additional, Yang, Jian-yu, additional, Sun, Yong-Wei, additional, Fang, Jing-Yuan, additional, Chen, Hao-Yan, additional, and Hong, Jie, additional

Published
2017
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41. Berberine may rescue Fusobacterium nucleatum-induced colorectal tumorigenesis by modulating the tumor microenvironment

Author

Yu, Ya-Nan, primary, Yu, Ta-Chung, additional, Zhao, Hui-Jun, additional, Sun, Tian-Tian, additional, Chen, Hui-Min, additional, Chen, Hao-Yan, additional, An, Hui-Fang, additional, Weng, Yu-Rong, additional, Yu, Jun, additional, Li, Min, additional, Qin, Wen-Xin, additional, Ma, Xiong, additional, Shen, Nan, additional, Hong, Jie, additional, and Fang, Jing-Yuan, additional

Published
2015
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42. Probiotics Clostridium butyricum and Bacillus subtilis ameliorate intestinal tumorigenesis

Author

Chen, Zhao-Fei, primary, Ai, Luo-Yan, additional, Wang, Ji-Lin, additional, Ren, Lin-Lin, additional, Yu, Ya-Nan, additional, Xu, Jie, additional, Chen, Hao-Yan, additional, Yu, Jun, additional, Li, Min, additional, Qin, Wen-Xin, additional, Ma, Xiong, additional, Shen, Nan, additional, Chen, Ying-Xuan, additional, Hong, Jie, additional, and Fang, Jing-Yuan, additional

Published
2015
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46. Risk factors for colorectal neoplasms based on colonoscopy and pathological diagnoses of Chinese citizens: a multicenter, case-control study

Author

Qin, Miao, primary, Ma, Lan-Qing, additional, Tan, Juan, additional, Chen, Ya-Rong, additional, Zhu, Liang-Ru, additional, Lin, Rong, additional, Hu, Wei-Ling, additional, Li, Jing-Nan, additional, Zhang, Kun-He, additional, Wang, Yan, additional, Li, Jian-Sheng, additional, Xiao, Bing, additional, Chen, Hao-Yan, additional, Chen, Ying-Xuan, additional, and Fang, Jing-Yuan, additional

Published
2014
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