33 results on '"Yeling Wang"'
Search Results
2. Corrigendum: Arachidonic acid in follicular fluid of PCOS induces oxidative stress in a human ovarian granulosa tumor cell line (KGN) and upregulates GDF15 expression as a response
- Author
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Yalan Ma, Lianwen Zheng, Yeling Wang, Yiyin Gao, and Ying Xu
- Subjects
PCOS ,arachidonic acid ,oxidative stress (OS) ,human ovarian granulosa tumor cell line (KGN) ,GDF15 ,response ,Diseases of the endocrine glands. Clinical endocrinology ,RC648-665 - Published
- 2022
- Full Text
- View/download PDF
3. Ginsenoside Rg2 alleviates myocardial fibrosis by regulating TGF-β1/Smad signalling pathway
- Author
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Quanwei Wang, Wenwen Fu, Xiaofeng Yu, Huali Xu, Dayun Sui, and Yeling Wang
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myocardial ischaemia ,cardiac function ,isoproterenol ,Therapeutics. Pharmacology ,RM1-950 - Abstract
Context Panax ginseng C.A. Meyer (Araliaceae) has cardioprotective effects. Ginsenosides are responsible for most of the pharmacological activities of ginseng. Objective This study investigates the effect of ginsenoside Rg2 on myocardial fibrosis in myocardial ischaemia rats. Materials and methods Male Wistar rats were divided into control, isoproterenol, ginsenoside Rg2 (5, 20 mg/kg) groups (n = 8). The rats were subcutaneously injected with isoproterenol (5 mg/kg) or normal saline (control group) once daily for 7 days. The animals were intragastrically treated with ginsenoside Rg2 or 0.5% CMC-Na (control and isoproterenol groups) daily for 28 days. At day 28, cardiac function, myocardial fibrosis, and TGF-β1/Smad signalling pathway were evaluated. Results Compared with myocardial ischaemic rats, ginsenoside Rg2 at doses of 5, 20 mg/kg abated partially the augment of LVEDP (8.9 ± 1.3 vs. 7.5 ± 0.7, 7.2 ± 1.0 mmHg) and the decreases of the LVSP (96.75 ± 13.2 vs. 118.3 ± 19.4, 124.3 ± 21.3 mmHg), the + dp/dt (2142.8 ± 309.3 vs. 2598.6 ± 404.0, 2661.5 ± 445.2 mmHg/s), and the -dp/dt (1996.3 ± 306.3 vs. 2476.6 ± 289.7, 2509.6 ± 353.1 mmHg/s). Ginsenoside Rg2 (9.2 ± 0.9%, 8.5 ± 0.8%) alleviated myocardial fibrosis when compared with the isoproterenol group (10.1 ± 1.0%), which was accompanied by suppressed TGF-β1/Smad signalling in heart tissues. Conclusions Ginsenosides from ginseng possess the property of alleviating myocardial fibrosis, improving cardiac function after myocardial ischaemia. Ginsenosides may be promising agents for improving the outcomes of patients with myocardial ischaemia.
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- 2021
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4. Arachidonic Acid in Follicular Fluid of PCOS Induces Oxidative Stress in a Human Ovarian Granulosa Tumor Cell Line (KGN) and Upregulates GDF15 Expression as a Response
- Author
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Yalan Ma, Lianwen Zheng, Yeling Wang, Yiyin Gao, and Ying Xu
- Subjects
PCOS ,arachidonic acid ,oxidative stress (OS) ,human ovarian granulosa tumor cell line (KGN) ,GDF15 ,response ,Diseases of the endocrine glands. Clinical endocrinology ,RC648-665 - Abstract
Polycystic ovarian ovary syndrome (PCOS) is the main cause of ovulatory infertility and a common reproductive endocrine disease of women in reproductive age. In addition, nearly half of PCOS patients are associated with obesity, and their total free fatty acids tend to increase. Arachidonic acid (AA) is a polyunsaturated fatty acid. Oxidation products of AA reacting with various enzymes[cyclooxygenases (COX), lipoxygenases (LOX), cytochrome P450s (CYP)] can change cellular mitochondrial distribution and calcium ion concentration, and increase reactive oxygen species (ROS) production. In this study, we analyzed the follicular fluid fatty acids and found higher levels of C20:4n6 (AA) in PCOS patients than in normal control subjects. Also, to determine whether AA induces oxidative stress (OS) in the human ovarian granulosa tumor cell line (KGN) and affects its function, we treated KGN cells with or without reduced glutathione (GSH) and then stimulated them with AA. The results showed that AA significantly reduced the total antioxidant capacity (TAC) and activity of antioxidant enzymes and increased the malondialdehyde (MDA), ROS and superoxide anion(O2-)levels in KGN cells. In addition, AA was also found to impair the secretory and mitochondrial functions of KGN cells and induce their apoptosis. We further investigated the downstream genes affected by AA in KGN cells and its mechanism of action. We found that AA upregulated the expression of growth differentiation factor 15 (GDF15), which had a protective effect on inflammation and tissue damage. Therefore, we investigated whether AA-induced OS in KGN cells upregulates GDF15 expression as an OS response.Through silencing of GDF15 and supplementation with recombinant GDF15 (rGDF15), we found that GDF15, expressed as an OS response, protected KGN cells against AA-induced OS effects, such as impairment of secretory and mitochondrial functions and apoptosis. Therefore, this study suggested that AA might induce OS in KGN cells and upregulate the expression of GDF15 as a response to OS.
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- 2022
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5. Three new compounds with nitric oxide inhibitory activity from Tirpitzia sinensis, an ethnomedicinal plant from Southwest China
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Ronghui Gu, Yuehu Wang, Shibiao Wu, Yeling Wang, Ping Li, Li Xu, Yue Zhou, Ze’e Chen, Edward J. Kennelly, and Chunlin Long
- Subjects
Tirpitzia sinensis ,Linaceae ,Lignans ,Inflammatory ,NO inhibition ,Pharmacological targets ,Chemistry ,QD1-999 - Abstract
Abstract The medicinal plant Tirpitzia sinensis has been used by the Zhuang ethnic people in mountainous areas of Southwest China to stop bleeding, invigorate blood circulation, and treat inflammation and wounds. In order to further explore its traditional medicinal uses, the phytochemical constituents of this species were examined. Three new compounds, the lignan tirpitzin (1), the flavonoid tirpitzoside (2), and the furan-glycoside tirpitziol (3), along with five known compounds were isolated from the aerial part of T. sinensis for the first time. The structures of these compounds were elucidated by 1D and 2D NMR, LC/MS, IR spectrometric methods and compared with published data. The results of an in silico pharmacophore-based analysis showed potential targets of the new compounds, including ERBB2, IRAK4, LCK, JAK2, MAPK14, and MMP-12. These targets suggested that 1–3 may be involved with wound-healing and/or inflammation, leading to an in vitro assay of nitric oxide (NO) inhibition assays with lipopolysaccharide-induced BV-2 cells. All three new compounds displayed moderate NO inhibitory activity with the IC50 values of 14.97 ± 0.87, 26.63 ± 1.32, and 17.09 ± 2.3 μM, respectively.
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- 2019
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6. Aging-associated dysfunction of Akt/protein kinase B: S-nitrosylation and acetaminophen intervention.
- Author
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Miaozong Wu, Anjaiah Katta, Murali K Gadde, Hua Liu, Sunil K Kakarla, Jacqueline Fannin, Satyanarayana Paturi, Ravi K Arvapalli, Kevin M Rice, Yeling Wang, and Eric R Blough
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Medicine ,Science - Abstract
BACKGROUND:Aged skeletal muscle is characterized by an increased incidence of metabolic and functional disorders, which if allowed to proceed unchecked can lead to increased morbidity and mortality. The mechanism(s) underlying the development of these disorders in aging skeletal muscle are not well understood. Protein kinase B (Akt/PKB) is an important regulator of cellular metabolism and survival, but it is unclear if aged muscle exhibits alterations in Akt function. Here we report a novel dysfunction of Akt in aging muscle, which may relate to S-nitrosylation and can be prevented by acetaminophen intervention. PRINCIPAL FINDINGS:Compared to 6- and 27-month rats, the phosphorylation of Akt (Ser473 and Thr308) was higher in soleus muscles of very aged rats (33-months). Paradoxically, these increases in Akt phosphorylation were associated with diminished mammalian target of rapamycin (mTOR) phosphorylation, along with decreased levels of insulin receptor beta (IR-beta), phosphoinositide 3-kinase (PI3K), phosphatase and tensin homolog deleted on chromosome 10 (PTEN) and phosphorylation of phosphoinositide-dependent kinase-1 (PDK1) (Ser241). In vitro Akt kinase measurements and ex vivo muscle incubation experiments demonstrated age-related impairments of Akt kinase activity, which were associated with increases in Akt S-nitrosylation and inducible nitric oxide synthase (iNOS). Impairments in Akt function occurred parallel to increases in myocyte apoptosis and decreases in myocyte size and the expression of myosin and actin. These age-related disorders were attenuated by treating aged (27-month) animals with acetaminophen (30 mg/kg body weight/day) for 6-months. CONCLUSIONS:These data demonstrate that Akt dysfunction and increased S-nitrosylation of Akt may contribute to age-associated disorders in skeletal muscle and that acetaminophen may be efficacious for the treatment of age-related muscle dysfunction.
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- 2009
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7. CARD9 Regulation and its Role in Cardiovascular Diseases
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Haina, Zhang, Yeling, Wang, Hongbo, Men, Wenqian, Zhou, Shanshan, Zhou, Quan, Liu, and Lu, Cai
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CARD Signaling Adaptor Proteins ,Cardiovascular Diseases ,Candidiasis, Chronic Mucocutaneous ,Cytokines ,Humans ,Cell Biology ,Molecular Biology ,Applied Microbiology and Biotechnology ,Immunity, Innate ,Ecology, Evolution, Behavior and Systematics ,Adaptor Proteins, Signal Transducing ,Developmental Biology - Abstract
Caspase recruitment domain-containing protein 9 (CARD9) is an adaptor protein expressed on myeloid cells and located downstream of pattern recognition receptors (PRRs), which transduces signals involved in innate immunity. CARD9 deficiency is associated with increased susceptibility to various fungal diseases. Increasing evidence shows that CARD9 mediates the activation of p38 MAPK, NF-κB, and NLRP3 inflammasome in various CVDs and then promotes the production of proinflammatory cytokines and chemokines, which contribute to cardiac remodeling and cardiac dysfunction in certain cardiovascular diseases (CVDs). Moreover, CARD9-mediated anti-apoptosis and autophagy are implicated in the progression of CVDs. Here, we summarize the structure and function of CARD9 in innate immunity and its various roles in inflammation, apoptosis, and autophagy in the pathogenesis of CVDs. Furthermore, we discuss the potential therapies targeting CARD9 to prevent CVDs and raise some issues for further exploring the role of CARD9 in CVDs.
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- 2022
8. Precise Poverty Alleviation and Enterprise Risk Bearing Level -Based on Empirical Data of Liquor Industry
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Yeling Wang, Qiqi Zheng, Dongchuan Lin, and Meiyan Qu
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- 2023
9. Pterostilbene alleviated NAFLD via AMPK/mTOR signaling pathways and autophagy by promoting Nrf2
- Author
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Bingyu Shen, Yeling Wang, Jiaqi Cheng, Yi Peng, Qiaoling Zhang, Zheng Li, Lilei Zhao, Xuming Deng, and Haihua Feng
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Pharmacology ,Complementary and alternative medicine ,Drug Discovery ,Pharmaceutical Science ,Molecular Medicine - Abstract
NAFLD is a liver disease that is caused by liver damage or extreme lipid deposition but not alcohol. Nrf2 could mediate resistance to oxidative stress injury. Autophagy can degrade metabolic waste and accumulated toxic endogenous substances. Pterostilbene (PTE) is an active compound extracted from blueberry, and grape, that exhibits many biological effects, such as antiinflammation and antitumor.This study provides a mechanism of PTE affecting on oxidative stress and autophagy in NAFLD mice. Tyloxapol, oil acid (OA) and palmitic acid (PA) were used to induce lipid accumulation in mice and HepG2 cells.Western blotting, CRISPR/Cas 9 and other molecular biological approaches were applied to explore the mechanisms of PTE effected on NAFLD.PTE pretreatment effectively reduced the lipid accumulation in OA and PA induced HepG2 cells and tyloxapol induced mice, and significantly promoted the expression of nNrf2, PPAR-α and HO-1, and AMPK activity, but inhibited the expression of mTORC 1 and SREBP-1c. PTE activated phosphatidylinositide 3-kinase (PI3K) and proteins in the autophagy-related gene (ATG) family, and promoted the transformation of LC3Ⅰ to LC3Ⅱ which indicated the activation of autophagy, however, these effects were abolished after Nrf2 knockout.PTE effectively alleviated oxidative stress damage induced by excessive lipid accumulation in hepatocytes, thus promoting the metabolism and decomposition of fatty acids to improve NAFLD.
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- 2022
10. Polarization demultiplexing by recursive least squares constant modulus algorithm based on QR decomposition
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Ling, Zhao, Yeling, Wang, Guijun, Hu, Yunpeng, Cui, Jian, Shi, and Li, Li
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- 2013
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11. Effect of Different Glucose Monitoring Methods on Bold Glucose Control: A Systematic Review and Meta-Analysis
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Yeling Wang, Congcong Zou, Han Na, Weixin Zeng, and Xiaoyan Li
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Blood Glucose ,General Immunology and Microbiology ,Article Subject ,Blood Glucose Self-Monitoring ,Applied Mathematics ,nutritional and metabolic diseases ,General Medicine ,Hypoglycemia ,General Biochemistry, Genetics and Molecular Biology ,Diabetes Mellitus, Type 1 ,Glucose ,Modeling and Simulation ,Humans ,Randomized Controlled Trials as Topic - Abstract
Objective. To evaluate the effectiveness of different glucose monitoring methods on blood glucose control and the incidence of adverse events among patients with type 1 diabetes mellitus. Methods. Using the method of literature review, the databases PubMed, Cochrane, and Embase were retrieved to obtain relevant research literature, and the selected studies were analyzed and evaluated. This study used Cochrane software RevMan5.4 to statistically analyze all the data. Results. A total of 15 studies were included in this study, including 10 randomized controlled trials and 5 crossover design trials, with a total of 2071 patients. Meta-analysis results showed that continuous blood glucose monitoring (CGM) could significantly reduce the HbA1c level of patients, weighted mean difference WMD = − 2.69 , 95% confidence interval (CI) (-4.25, -1.14), and P < 0.001 compared with self-monitoring of blood glucose (SMBG). Meanwhile, the incidence of severe hypoglycemia in the CGM group was significantly decreased, risk ratio RR = 0.52 , 95% CI 0.35-0.77, and P = 0.001 . However, there was no statistical difference in the probability of diabetic ketoacidosis between CGM and SMBG groups, RR = 1.34 , 95% CI 0.57-3.15, and P = 0.5 . Conclusion. Continuous blood glucose monitoring is associated with lower blood glucose levels than the traditional blood glucose self-test method.
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- 2022
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12. Correlation of the controlling nutritional status score and the prognostic nutritional index with the prognosis of patients treated with radiotherapy for small-cell lung cancer
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Lina Li, Shuang Zhang, Shufang Liu, Ping Yang, Xiangqian Weng, Lu Xu, and Yeling Wang
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Advanced and Specialized Nursing ,Oncology ,medicine.medical_specialty ,Index (economics) ,Lung Neoplasms ,business.industry ,medicine.medical_treatment ,Nutritional Status ,Nutritional status ,Prognosis ,Radiation therapy ,Correlation ,Anesthesiology and Pain Medicine ,Nutrition Assessment ,Internal medicine ,medicine ,Humans ,Non small cell ,business ,Retrospective Studies - Abstract
We aimed to explore the associations between the controlling nutritional status (CONUT), the prognostic nutritional index (PNI), and prognostic outcomes in patients with small-cell lung cancer (SCLC) receiving radiotherapy.A total of 93 SCLC patients who received radiotherapy at the hematology department in the First Affiliated Hospital of Hainan Medical University were retrospectively included in this analysis. Patient CONUT and PNI values were calculated. Receiver operating characteristic (ROC) curves were utilized to determine the optimal cut-off, the area under the curve (AUC), sensitivity, and specificity of CONUT and PNI in discriminating patient outcomes. Kaplan-Meier curve analysis was performed, and overall survival (OS) was compared for patients with CONUT3 and ≤3, or those with PNI47.7 and ≤47.7. Univariate and multivariate analysis using the Cox proportional hazard model was performed to identify the risk factors for patient death.The AUCs for CONUT and PNI were 0.95 and 0.82, respectively. The CONUT results indicated that patient OS decreased significantly from normal to mildly malnourished. Meanwhile, the OS for moderately malnourished patient decreased to severely malnourished (P for trend0.001). Patients with CONUT3 or PNI ≤47.7 had significantly shorter OS than those with CONUT ≤3 (median survival time 12 vs. 23 months; P0.001) or with PNI47.7 (median survival time 20 vs. 15 months; P=0.010). Multivariate analysis indicated that the TNM stage [hazard ratio (HR) =1.21; 95% confidence interval (CI): 1.03-1.66], CONUT score (HR =2.33; 95% CI: 1.76-3.91), and PNI ≤47.7 (HR =1.33; 95% CI: 1.09-1.99) were independent prognostic indicators for patient death.The CONUT and PNI were potential indicators for the outcome of patients with SCLC. CONUT3 or PNI ≤47.7 indicated an unfavorable prognosis for SCLC patients.
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- 2021
13. Ginsenoside Rg2 alleviates myocardial fibrosis by regulating TGF-β1/Smad signalling pathway
- Author
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Yeling Wang, Xiaofeng Yu, Dayun Sui, Quan-wei Wang, Huali Xu, and Wenwen Fu
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Cardiac function curve ,Male ,Cardiotonic Agents ,Ginsenosides ,Myocardial Ischemia ,Pharmaceutical Science ,Panax ,Smad Proteins ,SMAD ,Pharmacology ,030226 pharmacology & pharmacy ,01 natural sciences ,Transforming Growth Factor beta1 ,03 medical and health sciences ,Ginseng ,0302 clinical medicine ,Drug Discovery ,Medicine ,Animals ,Rats, Wistar ,biology ,Dose-Response Relationship, Drug ,business.industry ,lcsh:RM1-950 ,Isoproterenol ,General Medicine ,biology.organism_classification ,Fibrosis ,Hedgehog signaling pathway ,myocardial ischaemia ,0104 chemical sciences ,Rats ,010404 medicinal & biomolecular chemistry ,Ginsenoside rg2 ,lcsh:Therapeutics. Pharmacology ,Complementary and alternative medicine ,Molecular Medicine ,Araliaceae ,Myocardial fibrosis ,cardiac function ,business ,Transforming growth factor ,Signal Transduction - Abstract
Context Panax ginseng C.A. Meyer (Araliaceae) has cardioprotective effects. Ginsenosides are responsible for most of the pharmacological activities of ginseng. Objective This study investigates the effect of ginsenoside Rg2 on myocardial fibrosis in myocardial ischaemia rats. Materials and methods Male Wistar rats were divided into control, isoproterenol, ginsenoside Rg2 (5, 20 mg/kg) groups (n = 8). The rats were subcutaneously injected with isoproterenol (5 mg/kg) or normal saline (control group) once daily for 7 days. The animals were intragastrically treated with ginsenoside Rg2 or 0.5% CMC-Na (control and isoproterenol groups) daily for 28 days. At day 28, cardiac function, myocardial fibrosis, and TGF-β1/Smad signalling pathway were evaluated. Results Compared with myocardial ischaemic rats, ginsenoside Rg2 at doses of 5, 20 mg/kg abated partially the augment of LVEDP (8.9 ± 1.3 vs. 7.5 ± 0.7, 7.2 ± 1.0 mmHg) and the decreases of the LVSP (96.75 ± 13.2 vs. 118.3 ± 19.4, 124.3 ± 21.3 mmHg), the + dp/dt (2142.8 ± 309.3 vs. 2598.6 ± 404.0, 2661.5 ± 445.2 mmHg/s), and the -dp/dt (1996.3 ± 306.3 vs. 2476.6 ± 289.7, 2509.6 ± 353.1 mmHg/s). Ginsenoside Rg2 (9.2 ± 0.9%, 8.5 ± 0.8%) alleviated myocardial fibrosis when compared with the isoproterenol group (10.1 ± 1.0%), which was accompanied by suppressed TGF-β1/Smad signalling in heart tissues. Conclusions Ginsenosides from ginseng possess the property of alleviating myocardial fibrosis, improving cardiac function after myocardial ischaemia. Ginsenosides may be promising agents for improving the outcomes of patients with myocardial ischaemia.
- Published
- 2021
14. An Analysis of the Current Situation of the Research on the Influencing Factors of M & A Performance of Listed Companies
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Bingxi Lei, Yeling Wang, Guohui Zhang, and Dongchuan Lin
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Environmental sciences ,Computer science ,Mode (statistics) ,GE1-350 ,Environmental economics - Abstract
M & A was an important means to promote the transformation and upgrading of traditional industries, and also an important way to improve the degree of industrial concentration and speed up the transformation of industrial development mode. As a direct embodiment of the efficiency of M & A, the performance of M & A has been widely concerned by scholars. This paper introduced the concept of M & A performance and motivation of M & A, used Citespace to analyze 749 papers on M & A performance from CNKI core journals from 2000 to 2020,The research focus and frontier of M & A performance a analyzed by keyword clustering and keyword variation, and analyzed the research results of external environment, internal environment, M & A characteristics and external intermediary agencies which affect M & A performance, Finally, the possible direction of future research was proposed.
- Published
- 2021
15. The Role of Immune Cells in Recurrent Spontaneous Abortion
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Lianwen Zheng, Ying Xu, Dan Li, Donghai Zhao, and Yeling Wang
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0301 basic medicine ,medicine.medical_specialty ,Abortion, Habitual ,T-Lymphocytes ,Reproductive medicine ,Review ,Abortion ,Immune Dysfunction ,03 medical and health sciences ,0302 clinical medicine ,Immune system ,Pregnancy ,medicine ,Maternal-fetal immunity ,Effective treatment ,Humans ,Pregnancy outcomes ,030219 obstetrics & reproductive medicine ,business.industry ,Macrophages ,Immune cells ,Obstetrics and Gynecology ,Dendritic Cells ,Successful pregnancy ,Immunity, Innate ,Abortion, Spontaneous ,030104 developmental biology ,Immune dysfunction ,Immunology ,Female ,business ,Recurrent spontaneous abortion - Abstract
Recurrent spontaneous abortion affects approximately 1-2% of women of childbearing, and describes a condition in which women suffer from three or more continuous spontaneous miscarriages. However, the origin of recurrent spontaneous abortion (RSA) remains unknown, preventing effective treatment and placing stress upon patients. It has been acknowledged that successful pregnancy necessitates balanced immune responses. Therefore, immunological aberrancy may be considered a root cause of poor pregnancy outcomes. Considerable published studies have investigated the relationship between various immune cells and RSA. Here, we review current knowledge on this area, and discuss the five main categories of immune cells involved in RSA; these include innate lymphocytes (ILC), macrophages, decidual dendritic cells (DCs), and T cells. Furthermore, we sought to summarize the impact of the multiple interactions of various immune cells on the emergence of RSA. A good understanding of pregnancy-induced immunological alterations could reveal new therapeutic strategies for favorable pregnancy outcomes.
- Published
- 2020
16. Empirical Research on the Synergetic Relationship of Agricultural Insurance, Agricultural Credit and Rural Revitalization in Sichuan Province
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Ying Chen, Yeling Wang, Dongchuan Lin, and Guohui Zhang
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Empirical research ,Granger causality ,Agriculture ,business.industry ,Economics ,business ,Agricultural economics - Published
- 2020
17. Two new polyacylated germacrane sesquiterpenes from Salvia chinensis
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Hui-Ming Hua, Zhan-Lin Li, Dahong Li, Qian Liu, Yeling Wang, and Jingjing Xue
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010404 medicinal & biomolecular chemistry ,biology ,010405 organic chemistry ,Stereochemistry ,Chemistry ,Salvia chinensis ,Plant Science ,biology.organism_classification ,01 natural sciences ,Agronomy and Crop Science ,Biochemistry ,0104 chemical sciences ,Biotechnology - Abstract
Two new polyacylated germacrane sesquiterpenoids, named as salvianols A (1) and B (2), were isolated from the aerial parts of Salvia chinensis. Their structures were established by extensive analysis of HR-ESI-MS and NMR spectra. The polyacylated germacrane sesquiterpenoids are rare in natural products.
- Published
- 2019
18. Supra-Segmental Changes in Speech Production as a Result of Spectral Feedback Degradation: Comparison with Lombard Speech
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Lily Talesnick, Yeling Wang, David B. Pisoni, Nicholas Celestin, and Elizabeth D. Casserly
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Linguistics and Language ,Speech production ,Sociology and Political Science ,Computer science ,Speech recognition ,medicine.medical_treatment ,General Medicine ,Fundamental frequency ,Intelligibility (communication) ,01 natural sciences ,Article ,Language and Linguistics ,03 medical and health sciences ,Speech and Hearing ,0302 clinical medicine ,Formant ,Cochlear implant ,0103 physical sciences ,medicine ,Audio feedback ,030223 otorhinolaryngology ,010301 acoustics - Abstract
Perturbations to acoustic speech feedback have been typically localized to specific phonetic characteristics, for example, fundamental frequency (F0) or the first two formants (F1/F2), or affect all aspects of the speech signal equally, for example, via the addition of background noise. This paper examines the consequences of a more selective global perturbation: real-time cochlear implant (CI) simulation of acoustic speech feedback. Specifically, we examine the potential similarity between speakers’ response to noise vocoding and the characteristics of Lombard speech. An acoustic analysis of supra-segmental characteristics in speaking rate, F0 production, and voice amplitude revealed changes that paralleled the Lombard effect in some domains but not others. Two studies of speech intelligibility complemented the acoustic analysis, finding that intelligibility significantly decreased as a result of CI simulation of speaker feedback. Together, the results point to differences in speakers’ responses to these two superficially similar feedback manipulations. In both cases we see a complex, multi-faceted behavior on the part of talkers. We argue that more instances of global perturbation and broader response assessment are needed to determine whether such complexity is present in other feedback manipulations or if it represents a relatively rare exception to the typical compensatory feedback response.
- Published
- 2017
19. MOESM1 of Three new compounds with nitric oxide inhibitory activity from Tirpitzia sinensis, an ethnomedicinal plant from Southwest China
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Ronghui Gu, Yuehu Wang, Shibiao Wu, Yeling Wang, Li, Ping, Xu, Li, Zhou, Yue, ZeâE Chen, Kennelly, Edward, and Chunlin Long
- Abstract
Additional file 1. The details spectra for the identification of compound 1â 3. This file includes 1D-NMR, 2D-NMR, HR-MS, IR and UV spectra of compound 1â 3.
- Published
- 2019
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20. Three new compounds with nitric oxide inhibitory activity from
- Author
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Ronghui, Gu, Yuehu, Wang, Shibiao, Wu, Yeling, Wang, Ping, Li, Li, Xu, Yue, Zhou, Ze'e, Chen, Edward J, Kennelly, and Chunlin, Long
- Subjects
Pharmacological targets ,Pharmacophore ,Tirpitzia sinensis ,In silico ,Linaceae ,NO inhibition ,Lignans ,Inflammatory ,Research Article - Abstract
The medicinal plant Tirpitzia sinensis has been used by the Zhuang ethnic people in mountainous areas of Southwest China to stop bleeding, invigorate blood circulation, and treat inflammation and wounds. In order to further explore its traditional medicinal uses, the phytochemical constituents of this species were examined. Three new compounds, the lignan tirpitzin (1), the flavonoid tirpitzoside (2), and the furan-glycoside tirpitziol (3), along with five known compounds were isolated from the aerial part of T. sinensis for the first time. The structures of these compounds were elucidated by 1D and 2D NMR, LC/MS, IR spectrometric methods and compared with published data. The results of an in silico pharmacophore-based analysis showed potential targets of the new compounds, including ERBB2, IRAK4, LCK, JAK2, MAPK14, and MMP-12. These targets suggested that 1–3 may be involved with wound-healing and/or inflammation, leading to an in vitro assay of nitric oxide (NO) inhibition assays with lipopolysaccharide-induced BV-2 cells. All three new compounds displayed moderate NO inhibitory activity with the IC50 values of 14.97 ± 0.87, 26.63 ± 1.32, and 17.09 ± 2.3 μM, respectively. Electronic supplementary material The online version of this article (10.1186/s13065-019-0568-9) contains supplementary material, which is available to authorized users.
- Published
- 2018
21. An uncommon case of dual ventricular response in dual atrioventricular nodal non-reentrant tachycardia
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Zhiguo Zhang, Dongmei Chen, Meiwei Zhang, Hang Li, and Yeling Wang
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Tachycardia ,medicine.medical_specialty ,medicine.medical_treatment ,Cardiomyopathy ,030204 cardiovascular system & hematology ,Asymptomatic ,03 medical and health sciences ,0302 clinical medicine ,Refractory ,Internal medicine ,Palpitations ,Humans ,Tachycardia, Atrioventricular Nodal Reentry ,Ventricular Function ,Medicine ,cardiovascular diseases ,030212 general & internal medicine ,Ejection fraction ,business.industry ,General Medicine ,Middle Aged ,Ablation ,medicine.disease ,Treatment Outcome ,medicine.anatomical_structure ,Ventricle ,Catheter Ablation ,cardiovascular system ,Cardiology ,Female ,medicine.symptom ,Cardiomyopathies ,business - Abstract
Rationale Dual atrioventricular nodal non-reentrant tachycardia (DAVNNT) is an uncommon arrhythmia. Because of the different refractory periods of fast and slow pathways, a single atrial depolarization gives rise to 2 ventricular activationsthrough fast and slow pathways separately. Patient concerns A 45-year-old woman was referred to our Cardiology Center with symptoms of recurrent palpitations and fatigue persisting for the previous 3 years. On echocardiography, the ejection fraction of the left ventricle was 45%. Diagnoses Electrophysiological study findings and 12-lead electrocardiogram led to a diagnosis of DAVNNT. Interventions Our case responded very well to the ablation of the slow pathway, and her tachycardia completely disappeared. Outcome Her left ventricle ejection fraction also improved to52% after 3 months of follow-up. The patient remained asymptomatic throughout the follow-up period of 1 year, without any recurrence or complications. Lessons DAVNNT is a rare arrhythmia which can induce tachycardia-induced cardiomyopathy. Ablation of the slow pathway isconsidered a curative treatment.
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- 2018
22. Triterpenoids isolated from the aerial parts of Salvia chinensis
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Hui-Ming Hua, Hailong Zhang, Tao Yuan, Dandan Song, Yeling Wang, Yongkui Jing, Zhan-Lin Li, and Yue-Hu Pei
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Human leukemia ,Triterpenoid ,biology ,Traditional medicine ,Chemistry ,Stereochemistry ,Salvia chinensis ,Plant Science ,Differentiation induction ,biology.organism_classification ,Agronomy and Crop Science ,Biochemistry ,Biotechnology - Abstract
A new triterpenoid, 2α, 3β, 20β, 23-tetrahydroxy-urs-12, 19 (29)-dien-28-oic acid, together with eight known triterpenoids, was isolated from the aerial parts of Salvia chinensis . Their structures were identified by spectroscopic analyses. The antiproliferative effects and differentiation induction abilities of these compounds were determined in human leukemia HL-60 cells.
- Published
- 2009
23. New Germacrane Sesquiterpenes from Salvia chinensis
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Hui-Ming Hua, Hailong Zhang, Yue-Hu Pei, Yi Sha, Yeling Wang, and Zhan-Lin Li
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Spectrometry, Mass, Electrospray Ionization ,Salviadienol B ,Chromatography ,Spectrophotometry, Infrared ,medicine.diagnostic_test ,biology ,Chemistry ,Electrospray ionization ,General Chemistry ,General Medicine ,Mass spectrometry ,biology.organism_classification ,Sesquiterpene ,Plant Leaves ,Sesquiterpenes, Germacrane ,chemistry.chemical_compound ,Spectrophotometry ,Drug Discovery ,Solvents ,medicine ,Salvia chinensis ,Salvia ,Dehydrovomifoliol ,Chromatography, Liquid - Abstract
Two new germacrane sesquiterpenes, called salviadienol A (1) and salviadienol B (2), together with five known compounds, methyl-ent-4-epi-agath-18-oate (3), angelicoidenol (4), clovane-2beta,9alpha-diol (5), dehydrovomifoliol (6) and blumenol A (7), were isolated from Salvia chinensis. Their structures were identified on the basis of spectral characteristics.
- Published
- 2008
24. [Successful emergent stenting for acute left anterior descending artery occlusion during alcohol septal ablation for hypertrophic obstructive cardiomyopathy: a case report]
- Author
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Guoyu, Wang and Yeling, Wang
- Subjects
Adult ,Ethanol ,Catheter Ablation ,Humans ,Female ,Cardiomyopathy, Hypertrophic ,Extravasation of Diagnostic and Therapeutic Materials - Published
- 2014
25. An uncommon case of dual ventricular response in dual atrioventricular nodal non-reentrant tachycardia: A case report.
- Author
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Meiwei Zhang, Yeling Wang, Dongmei Chen, Hang Li, and Zhiguo Zhang
- Published
- 2018
- Full Text
- View/download PDF
26. Assayed Sperm Damnification by SCGE and Its Correlation with Sperm Motility and Sperm Malformation Rate
- Author
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Baigong Xue, Yeling Wang, Lianwen Zheng, and Zhanfei Yao
- Subjects
Gel electrophoresis ,endocrine system ,medicine.diagnostic_test ,urogenital system ,media_common.quotation_subject ,Motility ,Semen ,Semen analysis ,Biology ,Sperm ,Andrology ,Correlation analysis ,medicine ,Reproduction ,reproductive and urinary physiology ,Sperm motility ,media_common - Abstract
Objectives: To investigate the role played by sperm damnification in reproduction and correlation with sperm motility and sperm malformation rate. Method: We chosed 186 clinical samples for assaying their semen parameters by Computer Assisted Semen Analysis (CASA), meanwhile, we investigated sperm DNA damnification by Single cell gel electrophoresis(SCGE). Our work highlight that the correlation analysis of DNA damnification with the sperm deformity and motility. Then, we randomly selected some datas made statistics analysis by SPSS13.0. Result: The results showed that the SCGE method is very accurate for detected sperm DNA damnification. Statistics analysis showed that compared with the control group (male fertility), sperm viability, DNA damnification and morphology are significant difference of the group low sperm motility (P
- Published
- 2011
27. Iron-induced cardiac damage: role of apoptosis and deferasirox intervention
- Author
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Ravi Kumar Arvapalli, Hua Liu, Anjaiah Katta, Rabaa M. Al-Rousan, Jacqueline Fannin, Yeling Wang, Satyanarayana Paturi, Sunil K. Kakarla, Kevin M. Rice, Eric R. Blough, Miaozong Wu, and William E. Triest
- Subjects
Male ,medicine.medical_specialty ,Iron Overload ,Cardiac fibrosis ,Iron ,Apoptosis ,Iron Chelating Agents ,Benzoates ,Fibrosis ,Internal medicine ,medicine ,Animals ,Protein kinase B ,Caspase ,Pharmacology ,TUNEL assay ,biology ,Myocardium ,Deferasirox ,Triazoles ,medicine.disease ,Endocrinology ,Terminal deoxynucleotidyl transferase ,Immunology ,biology.protein ,Molecular Medicine ,Gerbillinae ,medicine.drug - Abstract
Excess cardiac iron levels are associated with cardiac damage and can result in increased morbidity and mortality. Here, we hypothesize that elevations in tissue iron can activate caspase-dependent signaling, which leads to increased cardiac apoptosis and fibrosis, and that these alterations can be attenuated by iron chelation. Using an iron-overloaded gerbil model, we show that increased cardiac iron is associated with reduced activation of Akt (Ser473 and Thr308), diminished phosphorylation of the proapoptotic regulator Bad (Ser136), and an increased Bax/Bcl-2 ratio. These iron-overload-induced alterations in Akt/Bad phosphorylation and Bax/Bcl-2 ratio were coupled with increased activation of the downstream caspase-9 (40/38- and 17-kDa fragments) and apoptosis executioner caspase-3 (19- and 17-kDa fragments), which were accompanied by evidence of elevated cytoskeletal α-fodrin cleavage (150- and 120-kDa fragments), discontinuity of myocardial membrane dystrophin immunoreactivity, increases in the number of terminal deoxynucleotidyl transferase dUTP nick-end labeling (TUNEL)-positive cells (nucleic DNA fragmentation), and cardiac fibrosis. We demonstrate that the administration of deferasirox, a tridentate iron chelator, is associated with diminished tissue iron deposition, attenuated activation of caspases, reduced α-fodrin cleavage, improved membrane integrity, decreased TUNEL reactivity, and attenuated cardiac fibrosis. These results suggest that the activation of caspase-dependent signaling may play a role in the development of iron-induced cardiac apoptosis and fibrosis, and deferasirox, via a reduction in cardiac tissue iron levels, may be useful for decreasing the extent of iron-induced cardiac damage.
- Published
- 2010
28. Acetaminophen improves protein translational signaling in aged skeletal muscle
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Sunil K. Karkala, Ravi Kumar Arvapalli, Yeling Wang, Miaozong Wu, Hua Liu, Jacqueline Fannin, Kevin M. Rice, Satyanarayana Paturi, Anjaiah Katta, and Eric R. Blough
- Subjects
Male ,medicine.medical_specialty ,Aging ,Eukaryotic Initiation Factor-2 ,Biology ,In Vitro Techniques ,medicine.disease_cause ,Models, Biological ,Internal medicine ,Tuberous Sclerosis Complex 2 Protein ,medicine ,Animals ,Phosphorylation ,Muscle, Skeletal ,Protein kinase B ,PI3K/AKT/mTOR pathway ,Acetaminophen ,Ribosomal Protein S6 ,Ribosomal Protein S6 Kinases ,TOR Serine-Threonine Kinases ,Tumor Suppressor Proteins ,RPTOR ,Intracellular Signaling Peptides and Proteins ,Skeletal muscle ,Phosphoproteins ,Muscle atrophy ,Rats ,medicine.anatomical_structure ,Endocrinology ,Eukaryotic Initiation Factor-4E ,Protein Biosynthesis ,Geriatrics and Gerontology ,medicine.symptom ,Carrier Proteins ,Oxidative stress ,medicine.drug ,Signal Transduction - Abstract
Age-related muscle atrophy is characterized by increased oxidative stress, diminished Akt enzymatic function, and reduced phosphorylation of the mammalian target of rapamycin (mTOR), which can be attenuated by chronic acetaminophen ingestion. Here we hypothesize that age-related impairments in Akt/mTOR function are associated with reduced protein translational signaling, and that these changes, if present, can be attenuated by acetaminophen treatment.Compared to 6- and 27-month old animals, the expression of the mTOR-complex proteins raptor and GβL and the phosphorylation of tuberin/TSC2 (Thr1462) were reduced in the soleus muscles of very aged rats (33 months old). These changes in Akt/mTOR pathway signaling proteins were in turn associated with decreased phosphorylation of S6 kinase p85S6K (Thr412) and eukaryotic translation initiation factor-4E (eIF4E) binding protein-1 (4EBP1, Thr37/46), reduced phosphorylation of S6 ribosomal protein (Ser235/236), and increased inhibition of eIF4E by binding to 4EBP1. Age-associated alterations in the Akt/mTOR pathway signaling and in the phosphorylation of the stress-responsive eIF2α protein were attenuated by chronic acetaminophen treatment (30 mg/kg body weight per day). Ex vivo incubation of adult muscles with hydrogen peroxide mimicked the age-related decreases seen in eIF4E and 4EBP1 phosphorylation, whereas the inclusion of acetaminophen in the muscle bath attenuated this effect.Aging is associated with impairments in the regulation of proteins thought to be important in controlling mRNA translation, and acetaminophen may be useful for the treatment of age-related muscle atrophy by reducing oxidative stress.
- Published
- 2010
29. ChemInform Abstract: New Germacrane Sesquiterpenes from Salvia chinensis
- Author
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Yi Sha, Hui-Ming Hua, Zhan-Lin Li, Hailong Zhang, Yeling Wang, and Yue-Hu Pei
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Terpene ,Salviadienol B ,biology ,Chemistry ,Stereochemistry ,Salvia chinensis ,General Medicine ,Dehydrovomifoliol ,biology.organism_classification - Abstract
Two new germacrane sesquiterpenes, called salviadienol A (1) and salviadienol B (2), together with five known compounds, methyl-ent-4-epi-agath-18-oate (3), angelicoidenol (4), clovane-2β,9α-diol (5), dehydrovomifoliol (6) and blumenol A (7), were isolated from Salvia chinensis. Their structures were identified on the basis of spectral characteristics.
- Published
- 2008
30. SEPARATION OF THREE BIOACTIVE ISOMERS FROM BIDENS PILOSA BY COUNTERCURRENT CHROMATOGRAPHY
- Author
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Ping, Li, primary, Yeling, Wang, additional, Zhiyong, Guo, additional, Wu, Shibiao, additional, Kennelly, Edward J., additional, Jianjun, Wang, additional, Li, Tang, additional, and Chunlin, Long, additional
- Published
- 2014
- Full Text
- View/download PDF
31. A new aromatic alkine from the tuber of Sparganium stoloniferum
- Author
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Hui-Ming Hua, Tao Yuan, Yeling Wang, and Yue-Hu Pei
- Subjects
Pharmacology ,Magnetic Resonance Spectroscopy ,Plant Extracts ,Chemistry ,Stereochemistry ,Sparganium stoloniferum ,General Medicine ,Pharmacognosy ,Magnoliopsida ,Structure-Activity Relationship ,Drug Discovery ,Botany ,Humans ,Phytotherapy - Abstract
A new aromatic alkine was isolated from the tuber of Sparganium stoloniferum . Its structure was assigned to be methyl 3,6-dihydroxy-2-[2-(2-hydroxyphenyl)-ethynyl]benzoate (1) by spectroscopic methods.
- Published
- 2007
32. Acetaminophen Improves Protein Translational Signaling in Aged Skeletal Muscle.
- Author
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Miaozong Wu, Hua Liu, Jacqueline Fannin, Anjaiah Katta, Yeling Wang, Ravi Kumar Arvapalli, Satyanarayana Paturi, Sunil K. Karkala, Kevin M. Rice, and Eric R. Blough
- Published
- 2010
- Full Text
- View/download PDF
33. Microstructure and High-temperature Mechanical Properties of Different Positions of Turbine Disc Forgings in GH4706 Superalloy
- Author
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Xu Yeling, Wang Chong, Hou Xiangyi, Huang Jialiang, Lian Xintong, Huang Shuo
- Subjects
gh4706 alloy; turbine disc; grain size; high-temperature mechanical properties ,Materials of engineering and construction. Mechanics of materials ,TA401-492 ,Technology - Abstract
In order to study the differences in microstructure and high temperature properties of different positions of turbine disc forging in GH4706 alloy, comparative analysis of mechanical properties at high temperature were carried out. Detailed experiments included high-temperature tensile property (conducted at the temperature of 400 ℃, 500 ℃, 600 ℃ and 650 ℃), high-temperature low-cycle fatigue (conducted at the temperature of 400 ℃, 500 ℃ and 600 ℃) and high-temperature stress rupture life (conducted at the condition of 650 ℃/690 MPa and 600 ℃/700 MPa) based on typical service performance requirements. The test results showed that the grain sizes of the hub, spoke and rim varied significantly, with the hub grain size level 4 (average grain size 84 μm), spoke grain size level 3 (average grain size 120 μm) and rim grain size level 2 (average grain size 183 μm).The γ′-γ″ composite of the samples in different positions were dispersed in spherical shape. The η phase of hub and plate is in needle shape, with larger size, and distributed parallel to grain boundaries. The η phase of rim precipitates in the shape of short rods with smaller size and dispersed arrangement at grain boundaries. There was no significant difference in high-temperature tensile strength at different locations. However, the samples from hub had excellent low-cycle fatigue performance (4 363 cycle number), while the tensile plasticity and stress rupture life of rim was the longest (1 259 h). The study indicated that the variation of microstructure from different positions of turbine disc forging in GH4706 alloy had significant effects on mechanical properties.
- Published
- 2024
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