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Xiang JM, Mi GB, Qu SJ, Huang X, Chen Z, Feng AH, Shen J, Chen DL. Thermodynamic and microstructural study of Ti 2AlNb oxides at 800 °C. Sci Rep 2018; 8:12761. [PMID: 30143715 PMCID: PMC6109092 DOI: 10.1038/s41598-018-31196-w] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2018] [Accepted: 08/14/2018] [Indexed: 11/08/2022] Open
Abstract
The high-temperature structural applications of Ti2AlNb-based alloys, such as in jet engines and gas turbines, inevitably require oxidation resistance. The objective of this study is to seek fundamental insight into the oxidation behavior of a Ti2AlNb-based alloy via detailed microstructural characterization of oxide scale and scale/substrate interface after oxidation at 800 °C using X-ray diffraction (XRD), scanning electron microscopy (SEM), electron probe microanalysis (EPMA), and transmission electron microscopy (TEM). The oxide scale exhibits a complex multi-layered structure consisting of (Al,Nb)-rich mixed oxide layer (I)/mixed oxide layer (II)/oxygen-rich layer (III)/substrate from the outside to inside, where the substrate is mainly composed of B2 and O-Ti2AlNb phases. High-resolution TEM examinations along with high-angle annular dark-field (HAADF) imaging reveal: (1) the co-existence of two types (α and δ) of Al2O3 oxides in the outer scale, (2) the presence of metastable oxide products of TiO and Nb2O5, (3) an amorphous region near the scale/substrate interface including the formation of AlNb2, and (4) O-Ti2AlNb phase oxidized to form Nb2O5, TiO2 and Al2O3.
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Affiliation(s)
- J M Xiang
- School of Materials Science and Engineering, Tongji University, Shanghai, 201804, P.R. China
| | - G B Mi
- Aviation Key Laboratory of Science and Technology on Advanced Titanium Alloys, AECC Beijing Institute of Aeronautical Materials, Beijing, 100095, China
| | - S J Qu
- School of Materials Science and Engineering, Tongji University, Shanghai, 201804, P.R. China.
| | - X Huang
- Aviation Key Laboratory of Science and Technology on Advanced Titanium Alloys, AECC Beijing Institute of Aeronautical Materials, Beijing, 100095, China
| | - Z Chen
- School of Materials Science and Engineering, Tongji University, Shanghai, 201804, P.R. China
- Aerospace Hiwing (Harbin) Titanium Industrial Co., Ltd., Harbin, 150028, China
| | - A H Feng
- School of Materials Science and Engineering, Tongji University, Shanghai, 201804, P.R. China
| | - J Shen
- School of Materials Science and Engineering, Tongji University, Shanghai, 201804, P.R. China
| | - D L Chen
- Department of Mechanical and Industrial Engineering, Ryerson University, Toronto, Ontario, M5B 2K3, Canada.
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Zhang TM, Yang ZQ, Zhang MY, Hu ZJ, Xiang JM, Huggins JW, Cosgriff TM, Smith JI. Early analysis of viremia and clinical tests in patients with epidemic hemorrhagic fever. Chin Med J (Engl) 1993; 106:608-10. [PMID: 7900974] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023] Open
Abstract
We analysed the early viremia and clinical tests in 82 patients with epidemic hemorrhagic fever (EHF). The results showed that the changes in viremia and clinical tests are related to the severity of the disease and prognosis. Higher concentrations of the virus in infected patients might cause a more unfavourable prognosis and more abnormalities in clinical tests. CK-MB, SGOT, SGPT, serum creatinine and urea nitrogen contents increased markedly, while serum total protein, albumin and calcium contents decreased markedly, indicating that the heart, liver and kidney in EHF patients were severely damaged. Markedly increased WBC and monocytes showed that the patients were seriously infected. Platelet count, antithrombin-III and plasminogen decreased markedly, demonstrating that there were marked changes in the coagulation-anticoagulation and fibrinolytic system of the EHF patients. Changes in RBC, Hb and HCT contents indicated that the blood in the EHF patients had a higher concentration. This study gives further evidence that EHFV plays an important role in the pathogenesis of EHF.
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Affiliation(s)
- T M Zhang
- Virus Research Institute, Hubei Medical College, Wuhan
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Qu CF, Yang ZQ, Xiang JM. [Alternanthera philoxeroides (Mavt.) Griseb protection against fetal epidemic hemorrhagic fever virus infection in suckling mice]. Zhongguo Zhong Yao Za Zhi 1993; 18:304-5, 320. [PMID: 8105801] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
It has been confirmed that Alternanthera philoxeroides (APG) can markedly protect suckling mice from being infected by epidemic hemorrhagic fever (EHF) virus. After the infected mice were treated with the effective components their survival rate increased, pathological lesion and virus antigen in the tissues mitigated as compared with the controls. Therapeutical dose of APG caused only slight deformation of the hepatic cells.
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Affiliation(s)
- C F Qu
- Virus Research Institute, Hubei Medical College, Wuhan
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Yang ZQ, Zhang TM, Zhang MV, Zheng ZM, Hu ZJ, Qu CF, Xiang JM, Huggins JW, Cosgriff TM, Smith JI. Interruption study of viremia of patients with hemorrhagic fever with renal syndrome in the febrile phase. Chin Med J (Engl) 1991; 104:149-53. [PMID: 1678691] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
Kinetic changes of viremia were observed in 287 cases of hemorrhagic fever with renal syndrome (HFRS) in whom ribavirin was administered with double blind random control studied by means of virus isolation, indirect immunofluorescence assay and enzyme-linked immunosorbent assay. The positive rate of viremia was 79.7% (Sp = 3%) and positive rate of HERS IgM was 85% (Sp = 3.1%) before treatment. Viremia could be interrupted by ribavirin as in the ribavirin treated group, the viremia positive rate decreased, duration of viremia was shortened, viral antigen products, virus titer and HFRS IgG antibody level were reduced as compared with the control group. This showed that viremia was very frequent in patients in the febrile phase and ribavirin is an effective antiviral drug in HFRS during the febrile phase. Dosage and course of treatment of this drug are discussed.
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Affiliation(s)
- Z Q Yang
- Virus Research Institute, Hubei Medical College, Wuhan
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Xiang LB, Zhang ZY, Chen JM, Xiang JM, Cosgriff TM. Epidemic hemorrhagic fever. The mechanism of coagulation and fibrinolysis. Chin Med J (Engl) 1990; 103:391-5. [PMID: 1975230] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
To understand the mechanism of hemorrhage, coagulation and fibrinolysis in epidemic hemorrhagic fever (EHF), thrombin time (TT), prothrombin time (PT), fibrinogen (FIG), the platelet count (PLAT), plasminogen (PLG), antithrombin-III (AT-III), fibrin-fibrinogen degraded products (FDP) and platelet functions of aggregation and release were studied dynamically with advanced methods in 134 EHF patients. TT and PT were prolonged, FIG, AT-III and PLG were decreased and FDP was increased. Besides, the decrease of PLAT, the platelet functions of aggregation and release were below the normal level. The results showed that the balance of blood coagulation and fibrinolysis was lost from the early stage of the disease.
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Affiliation(s)
- L B Xiang
- First Affiliated Hospital, Hubei Medical University, Wuhan
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Chen ZH, Zhang ZX, Wang XH, Xiang JM, Xiong JM, Mo YQ. [Effects of acetylgastrodin on vertebral and internal carotid artery blood flow in anesthetized dogs and rabbits]. Zhongguo Yao Li Xue Bao 1987; 8:321-5. [PMID: 3445772] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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Zheng ZM, Xiang JM, Liu HL, Zhu WP. Detection of herpes simplex virus antigens in tissue cultures by avidin-biotin-peroxidase complex method. Chin Med J (Engl) 1986; 99:717-20. [PMID: 3026746] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
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Li HL, Su Q, Xiang JM, Zhang ZZ, Mo YQ. [Antispasmodic effect of acetagastrodine on vascular smooth muscle]. Yao Xue Xue Bao 1986; 21:539-41. [PMID: 3811945] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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Chen WK, Cheng L, Guo SF, Xiang JM. [Serum HSV-2 antibody in males from high and low incidence areas of cervical cancer]. Zhonghua Zhong Liu Za Zhi 1986; 8:199-200. [PMID: 3017663] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Serum HSV-2 antibody in male from high and low incidence areas of cervical cancer was assayed by enzyme-immuno-slide method. The results show that the geometric mean titer of the serum HSV-2 antibody in the male from high incidence area (413.5) is significantly higher than that from the low incidence area (210.4) (P less than 0.01). It indicates that the high cancer incidence might be related to the high HSV-2 infection rate in the spouses of the cervical cancer patients.
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Xiang JM. [Comparative study of serum HSV-2 antibody by immuno-enzyme slide method in high and low incidence areas of cancer of the uterine cervix (author's transl)]. Zhonghua Zhong Liu Za Zhi 1982; 4:23-5. [PMID: 6284465] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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Xiang JM, Feng JS, Huang PT, Chen WK, Wu JG, Liu HY. Virus isolation and identification in cervical cancer patients. Chin Med J (Engl) 1982; 95:151-2. [PMID: 6284447] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
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