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Your search keyword '"Jing-Feng Tian"' showing total 14 results
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14 results on '"Jing-Feng Tian"'

1. Oscillation and Nonoscillatory Criteria of Higher Order Dynamic Equations on Time Scales

Author

Ya-Ru Zhu, Zhong-Xuan Mao, Jing-Feng Tian, Ya-Gang Zhang, and Xin-Ni Lin

Subjects
higher order dynamic equations, oscillation, nonoscillation, Riccati technique, fixed point theorem, Mathematics, QA1-939
Abstract

In this paper, we consider two universal higher order dynamic equations with several delay functions. We will establish two oscillatory criteria of the first equation and a sufficient and necessary condition for the second equation with a nonoscillatory solution by employing fixed point theorem.

Published
2022
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2. Platelet-to-Lymphocyte Ratio (PLR), Neutrophil-to-Lymphocyte Ratio (NLR), Monocyte-to-Lymphocyte Ratio (MLR), and Eosinophil-to-Lymphocyte Ratio (ELR) as Biomarkers in Patients with Acute Exacerbation of Chronic Obstructive Pulmonary Disease (AECOPD)

Author

Liao,Qian-Qian, Mo,Yan-Ju, Zhu,Ke-Wei, Gao,Feng, Huang,Bin, Chen,Peng, Jing,Feng-Tian, Jiang,Xuan, Xu,Hong-Zhen, Tang,Yan-Feng, Chu,Li-Wei, Huang,Hai-Ling, Wang,Wen-Li, Wei,Fang-Ning, Huang,Dan-Dan, Zhao,Bin-Jing, Chen,Jia, Zhang,Hao, Liao,Qian-Qian, Mo,Yan-Ju, Zhu,Ke-Wei, Gao,Feng, Huang,Bin, Chen,Peng, Jing,Feng-Tian, Jiang,Xuan, Xu,Hong-Zhen, Tang,Yan-Feng, Chu,Li-Wei, Huang,Hai-Ling, Wang,Wen-Li, Wei,Fang-Ning, Huang,Dan-Dan, Zhao,Bin-Jing, Chen,Jia, and Zhang,Hao

Abstract

Qian-Qian Liao,1,* Yan-Ju Mo,2,* Ke-Wei Zhu,3,4,* Feng Gao,2 Bin Huang,2 Peng Chen,4 Feng-Tian Jing,5 Xuan Jiang,6 Hong-Zhen Xu,1 Yan-Feng Tang,7 Li-Wei Chu,8 Hai-Ling Huang,1 Wen-Li Wang,8 Fang-Ning Wei,9 Dan-Dan Huang,9 Bin-Jing Zhao,9 Jia Chen,9 Hao Zhang1 1Department of Pharmacy, People’s Hospital of Guilin, Guilin, People’s Republic of China; 2Department of Respiratory and Critical Care Medicine, People’s Hospital of Guilin, Guilin, People’s Republic of China; 3GuangZhou BaiYunShan Pharmaceutical Holdings CO.,LTD. BaiYunShan Pharmaceutical General Factory, Guangzhou, People’s Republic of China; 4Department of Clinical Pharmacology, Xiangya Hospital, Central South University, Changsha, People’s Republic of China; 5Department of Respiratory Medicine, Xing An County People’ Hospital, Guilin, People’s Republic of China; 6Department of Hospital Infection Management, People’s Hospital of Guilin, Guilin, People’s Republic of China; 7Department of Geriatrics, People’s Hospital of Guilin, Guilin, People’s Republic of China; 8Department of Laboratory Medicine, People’s Hospital of Guilin, Guilin, People’s Republic of China; 9School of Clinical Pharmacy, Guilin Medical University, Guilin, People’s Republic of China*These authors contributed equally to this workCorrespondence: Ke-Wei Zhu, GuangZhou BaiYunShan Pharmaceutical Holdings CO.,LTD. BaiYunShan Pharmaceutical General Factory, No. 88 Yunxiang Road Tonghe Street, Baiyun District, Guangzhou, Guangdong Province, 510515, People’s Republic of China, Tel +86-020-87062636, Fax +86-020-87095309, Email zhukew2018@outlook.comPurpose: The study comprehensively evaluated the prognostic roles of the platelet-to-lymphocyte ratio (PLR), neutrophil-to-lymphocyte ratio (NLR), monocyte-to-lymphocyte ratio (MLR), basophil-to-lymphocyte ratio (BLR), and eosinophil-to-lymphocyte ratio (ELR) in patients with acute exacerbation of chronic obstructive pulmonary disease (AECOPD

Published
2024

4. Platelet-to-Lymphocyte Ratio (PLR), Neutrophil-to-Lymphocyte Ratio (NLR), Monocyte-to-Lymphocyte Ratio (MLR), and Eosinophil-to-Lymphocyte Ratio (ELR) as Biomarkers in Patients with Acute Exacerbation of Chronic Obstructive Pulmonary Disease (AECOPD).

Author

Liao, Qian-Qian, Mo, Yan-Ju, Zhu, Ke-Wei, Gao, Feng, Huang, Bin, Chen, Peng, Jing, Feng-Tian, Jiang, Xuan, Xu, Hong-Zhen, Tang, Yan-Feng, Chu, Li-Wei, Huang, Hai-Ling, Wang, Wen-Li, Wei, Fang-Ning, Huang, Dan-Dan, Zhao, Bin-Jing, Chen, Jia, and Zhang, Hao

Published
2024
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5. COMPLETE MONOTONICITY OF THE REMAINDER OF AN ASYMPTOTIC EXPANSION OF THE GENERALIZED GURLAND’S RATIO.

Author

ZHEN-HANG YANG and JING-FENG TIAN

Subjects
ASYMPTOTIC expansions, HYPERGEOMETRIC series, GAMMA functions, MONOTONIC functions
Abstract

Let a,b,c,d ∈ R with a+b = c+d = 2r +1. Then In Γ(x+a) Γ (x+b)/Γ(x+c) Γ (x+d) ~ ∞/Σ/k=1 B2k (θ1) - B2k (θ2)/k (2k-1) (x+r)2k-1 as x→∞, where (δ1,δ2) = (|a−b|,|c−d|) = (1−2θ1,1−2θ2). When 0 ≤ δ2 < δ1 ≤ 1, the function x→ (-1)m [1n Γ(x+a) Γ (x+b)/Γ(x+c) Γ (x+d) - m/Σ/k=1 B2k (θ1) - B2k (θ2)/k (2k-1) (x+r)2k-1 ] for m ∈ N is completely monotonic on (−r,∞). This yields some known and new results. [ABSTRACT FROM AUTHOR]

Published
2024
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6. Platelet-to-lymphocyte ratio (PLR), neutrophil-to-lymphocyte ratio (NLR), and monocyte-to-lymphocyte ratio (MLR), and eosinophil-to-lymphocyte ratio (ELR) as biomarkers in patients with acute exacerbation chronic obstructive pulmonary disease

Author

Liao, Qian-Qian, primary, Mo, Yan-Ju, additional, Zhu, Ke-Wei, additional, Gao, Feng, additional, Huang, Bin, additional, Chen, Peng, additional, Jing, Feng-Tian, additional, Jiang, Xuan, additional, Xu, Hong-Zhen, additional, Tang, Yan-Feng, additional, Chu, Li-Wei, additional, Huang, Hai-Ling, additional, Wang, Wen-Li, additional, Wei, Fang-Ning, additional, Huang, Dan-Dan, additional, Zhao, Bin-Jing, additional, Chen, Jia, additional, and Zhang, Hao, additional

Published
2023
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8. Platelet-to-Lymphocyte Ratio (PLR), Neutrophil-to-Lymphocyte Ratio (NLR), and Monocyte-to-Lymphocyte Ratio (MLR), and Eosinophil-to-Lymphocyte Ratio (ELR) as Biomarkers in Patients with Acute Exacerbation Chronic Obstructive Pulmonary Disease.

Author

Liao, Qian-Qian, primary, Mo, Yan-Ju, additional, Zhu, Ke-Wei, additional, Gao, Feng, additional, Huang, Bin, additional, Chen, Peng, additional, Jing, Feng-Tian, additional, Jiang, Xuan, additional, Xu, Hong-Zhen, additional, Tang, Yan-Feng, additional, Chu, Li-Wei, additional, Huang, Hai-Ling, additional, Wang, Wen-Li, additional, Wei, Fang-Ning, additional, Huang, Dan-Dan, additional, Zhao, Bin-Jing, additional, Chen, Jia, additional, and Zhang, Hao, additional

Published
2022
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11. COMPLETE MONOTONICITY INVOLVING THE DIVIDED DIFFERENCE OF POLYGAMMA FUNCTIONS.

Author

Zhen-Hang Yang and Jing-Feng Tian

Abstract

For r, s ∈ R and ρ = min {r, s}, let D [x + r, x + s; ψn-1] ≡ -φn (x) be the divided difference of the functions ψn-1 = (-1)n ψ(n-1) (n ∈ N) on (-ρ, ∞), where ψ(n) stands for the polygamma functions. In this paper, we present the necessary and sufficient conditions for the functions... to be completely monotonic on (-ρ, ∞), where mi, ni ∈ N for i = 1, ..., k with k ≥ 2 and .... These generalize known results and gives an answer to a problem. [ABSTRACT FROM AUTHOR]

Published
2023
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14. Logarithmically complete monotonicity of ratios of q-gamma functions

Author

Zhenhang Yang and Jing-Feng Tian

Subjects
Combinatorics, Applied Mathematics, Monotonic function, Gamma function, Analysis, Mathematics
Abstract

For u , v , r , s ∈ R and 0 q ≠ 1 , let Γ q , ψ q be the q-gamma, -psi functions and let W q ; u , v be defined on ( − min ⁡ { u , v } , ∞ ) by W q ; u , v ( x ) = ( Γ q ( x + u ) Γ q ( x + v ) ) 1 / ( u − v ) if u ≠ v and W q ; u , u ( x ) = e ψ q ( x + u ) . In this paper, by a new way we present the necessary and sufficient conditions for the ratio ( W q ; u , v / W q ; r , s ) to be logarithmically completely monotonic on ( − ρ , ∞ ) , where ρ = min ⁡ { u , v , r , s } . This extends and generalizes some existing results.

Published
2022
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