103 results on '"X F, Zhou"'
Search Results
2. Text Document Latent Subspace Clustering by PLSA Factors.
- Author
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X. F. Zhou, J. G. Liang, Y. Hu, and L. Guo
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- 2014
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3. An EMM-based Approach for Text Classification.
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J. G. Liang, X. F. Zhou, P. Liu, L. Guo, and S. Bai
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- 2013
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4. [Establishment of morphological reference values for the differential count of white blood cells in peripheral blood smear, as well as nucleated cells and megakaryocytes in bone marrow smear]
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P, Wu, L N, Zhou, Y, Xing, H P, Sun, L J, Wan, C Y, Zhou, D D, Zhang, X F, Zhou, H, Zhang, M Y, Chen, Y F, Wang, N N, Wang, W J, Liu, T L, Xu, Y W, Fu, L J, Liu, D, Yuan, M, Chen, and H, Wang
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Male ,Leukocyte Count ,Bone Marrow ,Reference Values ,Leukocytes ,Animals ,Bone Marrow Cells ,Female ,Megakaryocytes - Published
- 2022
5. Diagnosing Anorexia Based on Partial Least Squares, Back Propagation Neural Network, and Support Vector Machines.
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C. Y. Zhao, Ruisheng Zhang, Huanxiang Liu, C. X. Xue, S. G. Zhao, X. F. Zhou, Mancang Liu, and Bo Tao Fan
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- 2004
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6. Value of three biopsy methods in prostate cancer detection: a meta-analysis and systematic review
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Y-S, Deng, Y-H, He, W-W, Ying, H-L, Liu, P-Z, Li, C-Y, Ma, Z-S, Ding, X, Chen, J-F, Wang, and X-F, Zhou
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Cohort Studies ,Male ,Biopsy ,Humans ,Prostatic Neoplasms - Abstract
The study aimed at investigating the value of systemic biopsy (sysPbx), magnetic resonance imaging/ultrasound fusion targeted biopsy (fusPbx) and fusPbx combined with sysPbx (comPbx) for prostate cancer (PCa) detection.Data from the PubMed, Cochrane, and Embase databases were searched from inception until March 23, 2020. Prospective studies comparing the detection rates of sysPbx, fusPbx and comPbx were identified. We pooled the detection rates for all PCa, clinically significant prostate cancer (csPCa), and clinically insignificant prostate cancer (cinsPCa) of fusPbx, sysPbx, and comPbx. Risk ratios (RRs) were calculated for the meta-analysis. Then, analyses were performed to identify the possible sources of heterogeneity.Seventeen studies, including 18 cohorts with 3035 men, were included. No patients had previous evidence of PCa. Each patient had one or more suspicious lesions found on multiparametric magnetic resonance imaging (mpMRI) and received both fusPbx and sysPbx. The results showed that fusPbx and sysPbx did not differ significantly in detecting all PCa (RR=1.00, 95% CI: 0.95-1.05, p0.05). However, fusPbx provided a higher detection rate for csPCa (RR=1.24, 95% CI: 1.14-1.34, p0.05) and a lower detection rate for cinsPCa (RR=0.68, 95% CI: 0.61-0.76, p0.05) than sysPbx. In addition, comPbx detected more PCa (RR=1.22, 95% CI: 1.16-1.29, p0.05) and csPCa cases (RR=1.13, 95% CI: 1.05-1.21, p0.05) than fusPbx.In men with positive mpMRI findings, compared to sysPbx, fusPbx had significantly increased the detection rates for csPCa and decreased those for cinsPCa. The combination of fusPbx with sysPbx outperformed fusPbx in detecting both overall PCa and csPCa.
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- 2021
7. [Analysis of the self-conscious health status and influencing factors of greenhouse agricultural workers in Beijing suburb]
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X F, Zhou, G Y, Li, Y Q, Wang, L, Guo, D X, Wang, M, Yu, H H, Dong, L, Rong, and S C, Tang
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Male ,Farmers ,Beijing ,Health Status ,Occupational Exposure ,Humans ,Agriculture ,Pesticides ,Agricultural Workers' Diseases - Published
- 2021
8. [Prevalence and risk factors of
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Z H, Hu, H H, Chen, K, Qian, C Q, Ning, G H, Peng, Y F, Yu, X F, Zhou, Y H, Chu, D, Xu, J X, Chen, L G, Tian, and H, Li
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Acquired Immunodeficiency Syndrome ,China ,Feces ,Cross-Sectional Studies ,AIDS-Related Opportunistic Infections ,Risk Factors ,Prevalence ,Humans ,Blastocystis hominis ,HIV Infections ,Blastocystis Infections ,Cities - Abstract
To investigate the prevalence and risk factors ofA cross-sectional questionnaire survey was conducted among AIDS patients in Nanchang City during the period between May and September, 2016.A survey was conducted in Nanchang City from May to September 2016. A total of 505 AIDS patients were investigated, and the prevalence ofThe prevalence of
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- 2020
9. Intrinsic Spin Susceptibility and Pseudogaplike Behavior in Infinite-Layer LaNiO_{2}
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Jia-Wei Mei, D. Zhao, H. Cheng, S. J. Li, Lian-Ping Wang, Zhibo Wu, J. J. Ying, F. H. Yu, J. Li, M. Shan, X. F. Zhou, L. Zheng, Y. Fu, L. P. Nie, Yuan Zhou, S. M. Wang, Xi Chen, T. Wu, B. L. Kang, and D. W. Song
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Physics ,Superconductivity ,Condensed matter physics ,biology ,Strongly Correlated Electrons (cond-mat.str-el) ,Condensed Matter - Superconductivity ,Exchange interaction ,General Physics and Astronomy ,FOS: Physical sciences ,Knight shift ,biology.organism_classification ,Superconductivity (cond-mat.supr-con) ,Magnetization ,Paramagnetism ,Condensed Matter - Strongly Correlated Electrons ,Condensed Matter::Superconductivity ,Lanio ,Cuprate ,Condensed Matter::Strongly Correlated Electrons ,Ground state - Abstract
The recent discovery of superconductivity in doped infinite-layer nickelates has stimulated intensive interest, especially for similarities and differences compared to that in cuprate superconductors. In contrast to cuprates, although earlier magnetization measurement reveals a Curie-Weiss-like behavior in undoped infinite-layer nickelates, there is no magnetic ordering observed by elastic neutron scattering down to liquid helium temperature. Until now, the nature of the magnetic ground state in undoped infinite-layer nickelates was still elusive. Here, we perform a nuclear magnetic resonance (NMR) experiment through 139La nuclei to study the intrinsic spin susceptibility of infinite-layer LaNiO2. First, the signature for magnetic ordering or freezing is absent in the 139La NMR spectrum down to 0.24 K, which unambiguously confirms a paramagnetic ground state in LaNiO2. Second, a pseudogap-like behavior instead of Curie-Weiss-like behavior is observed in both the temperature-dependent Knight shift and nuclear spin-lattice relaxation rate (1/T1), which is widely observed in both underdoped cuprates and iron-based superconductors. Furthermore, the scaling behavior between the Knight shift and 1/T1T has also been discussed. Finally, the present results imply a considerable exchange interaction in infinite-layer nickelates, which sets a strong constraint for the proposed theoretical models., 14 pages, 4 figures, accepted by Physical Review Letters
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- 2020
10. CircTMBIM6 promotes osteoarthritis-induced chondrocyte extracellular matrix degradation via miR-27a/MMP13 axis
- Author
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Z-M, Bai, M-M, Kang, X-F, Zhou, and D, Wang
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Aged, 80 and over ,MicroRNAs ,Chondrocytes ,Matrix Metalloproteinase 13 ,Osteoarthritis ,Humans ,RNA, Circular ,Middle Aged ,Aged ,Extracellular Matrix ,Up-Regulation - Abstract
Osteoarthritis is a degenerative disease characterized by degeneration of articular cartilage, but the current mechanism is unclear. Circular RNA (circRNA) plays a significant role in a series of biological processes related to osteoarthritis, but its mechanism remains unclear. The purpose of this study was to investigate the role of the circTMBIM6/miR-27a/MMP13 axis in osteoarthritis.The expression levels of circTMBIM6, miR-27a and MMP13 in cartilage of osteoarthritis patients and normal human cartilage were detected by reverse transcription polymerase chain reaction (RT-PCR). Osteoarthritis cell model was induced by IL-1β and TNF-α, and the expression changes of circTMBIM6, miR-27a and MMP13 in the in vitro model were detected. In addition, the in vitro regulation of circTMBIM6 and miR-27a in osteoarthritis was verified by transfection of circTMBIM6 and miR-27a plasmids, and the regulation of miR-27a on MMP13 was also verified. The dimethylmethylene blue (DMMB) method was used to analyze the secretion and formation of soluble glycosaminoglycan sulfate (sGAG), and the effects of circTMBIM6 and miR-27a chondrocytes were evaluated.The expression levels of circTMBIM6 and MMP13 in cartilage tissue of patients with osteoarthritis were higher than that of normal group, while the expression level of miR-195 in cartilage tissue of patients with osteoarthritis was lower. After IL-1β and TNF-α treatment, the expression of circTMBIM6 and MMP13 in chondrocytes increased, while the expression of miR-27a decreased. CircTMBIM6 overexpression reduced miR-27a expression but increased MMP13 expression. The circTMBIM6 gene knockout showed the opposite effect.CircTMBIM6 promotes osteoarthritis-induced chondrocyte extracellular matrix degradation via miR-27a/MMP13 axis.
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- 2020
11. High expression of MMP14 is associated with progression and poor short-term prognosis in muscle-invasive bladder cancer
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J-F, Wang, Y-Q, Gong, Y-H, He, W-W, Ying, X-S, Li, X-F, Zhou, and L-Q, Zhou
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Male ,Middle Aged ,Prognosis ,Gene Expression Regulation, Neoplastic ,Neoplasms, Muscle Tissue ,Urinary Bladder Neoplasms ,Cell Line, Tumor ,Biomarkers, Tumor ,Disease Progression ,Matrix Metalloproteinase 14 ,Humans ,Female ,Neoplasm Invasiveness ,Aged ,Cell Line, Transformed - Abstract
To evaluate the short-term prognostic value of matrix metalloproteinase 14 (MMP14) in muscle-invasive bladder cancer (MIBC).Expression of MMP14 and clinical information from The Cancer Genome Atlas (TCGA) were mined in MIBC patients to analyse expression differences and conduct survival analyses. The mRNA and protein expression levels of MMP14 in other tumours were analysed using Gene Expression Profiling Interactive Analysis (GEPIA) and The Human Protein Atlas. The expression level of MMP14 in bladder cancer (BC) cell lines and clinical samples and its clinical significance were indicated using quantitative Real Time-Polymerase Chain Reaction (qRT-PCR), Western blotting, and immunohistochemistry. The biological functions of MMP14 were investigated by examining cell migration using in vitro wound-healing assays and cell invasion using transwell invasion assays. Survival analyses were conducted with the collected clinical follow-up data.Our study revealed that MMP14 is highly expressed in MIBC based, on both TCGA derived data and our clinical tissues (p0.05). MMP14 is also highly expressed in head and neck cancer, renal cancer, pancreatic cancer and other cancers, as analysed using GEPIA and The Human Protein Atlas (p0.05). Survival analyses of the TCGA data and our clinical follow-up data revealed high expression of MMP14 indicates a poor short-term prognosis in MIBC (p0.05). Furthermore, downregulation of MMP14 suppressed BC cell invasion and migration abilities in vitro. MMP14 expression was closely correlated with tumour metastasis (p0.05). T stage [hazard ratio (HR)=1.412, 95% confidence interval (CI)=1.121-1.779, p=0.003] and metastasis (HR=2.256, 95% CI=1.242-4.100, p=0.008) were unfavourable prognostic factors in BC patients.In MIBC, MMP14 expression is upregulated and closely associated with disease progression and poor short-term prognosis.
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- 2020
12. Measurement of the Mass of the τ Lepton
- Author
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T. H. Burnett, S. T. Xue, F. Li, H. L. Ni, W. G. Li, Jun-Bing Ma, H. S. Zhou, G. Y. Hu, Q. Liu, Z. D. Cheng, G. P. Zhou, O. Bardon, E. Soderstrom, Wei Li, Y. H. Zhou, Michael J. Fero, Z. J. Jiang, J. S. Whitaker, Chunmei Zhang, L. P. Zhou, Z. P. Mao, Robert Wilson, S. D. Gu, D. H. Ma, W. G. Yan, Q. P. Jia, L. J. Pan, T. Hu, H. Marsiske, D. L. Shen, M. L. Gao, Y. S. Li, C. M. Yang, R. Cowan, W. X. Gao, M. Mandelkern, Ming-Han Ye, Q. M. Zhu, W. D. Li, Yuanyuan Wang, J. W. Zhang, J. A. Coller, S. Z. Lin, D. G. Hitlin, W. R. Zhao, E. Torrence, H. M. Liu, Lei Zhang, Q. M. Li, Z. P. Zheng, Y. F. Lai, Y. B. Liu, D. M. Xi, Y. N. Gao, Joseph Izen, G. Rong, L. S. Zheng, Y. Zhang, X. M. Xia, J. Yan, Pihong Zhao, H. Y. Zhang, J. Panetta, J. S. Campbell, A. S. Johnson, S. M. Chen, D. X. Zhao, B. Y. Zhang, W. X. Gu, Y. C. Zhu, P. Wang, G. L. Tong, M. Z. Wang, X. C. Meng, Z. Q. Xu, W. H. Toki, P. L. Wang, X. F. Zhou, Junguang Lu, P. F. Lang, Xingzhu Cui, H. C. Cui, H. Z. Shi, H. S. Sun, S. Q. Zhang, D. Q. Huang, T. J. Wang, A. J. S. Smith, J. Synodinos, R. Becker-Szendy, J. Z. Bai, Ya-Nan Guo, C. Y. Yang, S. Q. Gao, X. F. Song, Y. Q. Chen, H. L. Ding, Xin Wu, D. P. Stoker, C. Fang, L. Z. Wang, X. X. Xie, R. K. Yamamoto, M. H. Kelsey, R. S. Xu, J. C. Li, Y. K. Que, H. S. Mao, Y. S. Zhu, S. Z. Ye, M. Hatanaka, W. Dunwoodie, M. G. Zhao, Z. Q. Yu, W. J. Wisniewski, G. Zioulas, J. H. Gu, J. Schultz, J. Quigley, S. J. Chen, L. Jones, B. Lowery, Chun-Hua Jiang, J. J. He, P. P. Xie, P. Q. Li, Y. Y. Shao, Jinxing Zheng, E. C. Ma, H. L. Zhang, E. Prabhakar, A. J. Lankford, H. B. Yao, J. T. Shank, D. H. Zhang, H. Y. Sheng, N. D. Qi, Z. Z. Du, R. G. Liu, B. Schmid, Y. L. Han, R. B. Li, Y. Z. Huang, F. C. Porter, and Y. N. Guo
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Physics ,Particle physics ,Lepton - Published
- 2020
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13. Direct Measurement of the Pseudoscalar Decay Constant, fDs
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Z. P. Zheng, Y. Jin, J. C. Li, C. C. Zhang, D. Paluselli, G. P. Zhou, J. G. Lu, G. Zioulas, S. Z. Lin, W. R. Zhao, Z. A. Liu, L. S. Wang, M. H. Ye, R. B. Li, I. Blum, Z. Q. Xu, Y. H. Zhou, K. R. He, R. J. Wilson, Chun-Hua Jiang, D. P. Stoker, J. H. Liu, T. J. Wang, S. Whittaker, R. Malchow, G. L. Tong, T. Hu, Michael Schernau, W. Yang, B. A. Zhuang, P. Gratton, Q. P. Jia, J. Panetta, S. M. Chen, X. M. Xia, H. B. Lan, W. X. Zhao, S. Q. Gao, J. Nie, J. Fang, L. S. Zheng, X. R. Shi, Y. Z. Huang, G. P. Chen, Y. B. Liu, Y. Zhang, Y. C. Zhu, O. Bardon, P. L. Wang, E. Soderstrom, H. Shen, Wei Li, D. X. Zhao, B. Y. Zhang, F. C. Porter, F. Sun, X. Q. Hu, W. D. Li, Y. F. Gu, S. H. Kang, D. Z. Xu, J. M. lzen, X. F. Zhou, D. Q. Huang, R. S. Xu, Y. Y. Wang, Y. Y. Shao, C. S. Gao, D. G. Hitlin, M. He, D. L. Shen, J. Quigley, S. Z. Ye, M. Hatanaka, M. Mandelkern, C. Z. Yuan, H. B. Hu, R. G. Liu, Jinxing Zheng, S. J. Chen, H. S. Mao, B. K. Kim, Y. Q. Chen, S. T. Xue, J. W. Zhang, B. Schmid, B. S. Cheng, J. Z. Bai, A. Breakstone, Q. Liu, Xingzhu Cui, M. G. Zhao, G. Y. Hu, F. A. Harris, L. Jones, J. H. Gu, J. Schultz, X. L. Fan, F. Li, H. L. Ni, H. C. Cui, Y. K. Que, J. Chen, Li Zhou, H. B. Yao, Q. M. Zhu, H. Z. Shi, P. Wang, Jun-Bing Ma, Y. P. Tan, S. M. Wang, D. M. Xi, J. Yan, S. W. Han, J. Synodinos, X. F. Song, P. P. Xie, X. Y. Shen, P. F. Lang, J. W. Zhao, S. D. Gu, S. Q. Zhang, L. Z. Wang, A. M. Ma, H. S. Zhou, J. J. He, M. Z. Wang, H. L. Ding, M. H. Kelsey, Y. N. Guo, E. Torrence, H. S. Sun, X. C. Lou, J. Oyang, H. Y. Sheng, W. Dunwoodie, R. K. Yamamoto, Y. L. Han, P. Q. Li, M. L. Gao, W. G. Li, Xinglong Li, D. H. Zhang, J. Y. Zhang, X. Q. Li, S. Q. Tang, Pihong Zhao, W. J. Wisniewski, C. S. Yu, C. X. Yu, B. Lowery, W. X. Gu, R. Cowan, E. Prabhakar, Y. B. Chen, W. H. Toki, C. Y. Yang, N. D. Qi, H. M. Liu, A. J. Lankford, Y. F. Lai, H. F. Chen, X. C. Meng, W. F. Wang, J. Standifird, L. J. Pan, Michael J. Fero, Y. Y. Zhang, A. J. S. Smith, Y. S. Zhu, C. M. Yang, W. X. Gao, Z. Z. Du, W. G. Yan, S. J. Sun, E. C. Ma, Lei Zhang, H. L. Zhang, G. Rong, Z. Q. Yu, S.L. Olsen, T. H. Burnett, F. Wang, Z. P. Mao, and Q. Y. Li
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Physics ,Pseudoscalar ,Particle physics ,Exponential decay - Published
- 2020
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14. [Clinical analysis of 43 cases of retroperitoneal laparoscopic renal biopsy]
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G M, Zou, L, Zhuo, X F, Zhou, H X, Chen, and W G, Li
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Biopsy ,Humans ,Laparoscopy ,Retroperitoneal Space ,Kidney ,Retrospective Studies - Published
- 2019
15. [Screening of optimal siRNA interference sequence of CIT gene and its inhibition expression in hepatoma SK-Hep-1]
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Y, Hu, Q, Liu, X F, Zhou, L L, Huang, and H, Sun
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Carcinoma, Hepatocellular ,Cell Line, Tumor ,Liver Neoplasms ,Intracellular Signaling Peptides and Proteins ,Humans ,RNA Interference ,Blood Proteins ,RNA, Messenger ,Protein Serine-Threonine Kinases ,RNA, Small Interfering ,Transfection ,Cell Proliferation - Published
- 2019
16. [Safety and efficacy of transarterial embolization combined with octreotide LAR on reducing tumor burden for neuroendocrine tumor liver metastasis]
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Y M, Liu, F, Lian, X F, Zhou, W C, Chen, H K, Liu, W, Yao, W Z, Fan, J P, Li, J, Chen, and Y, Wang
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Adult ,Male ,Neuroendocrine Tumors ,Treatment Outcome ,Liver Neoplasms ,Humans ,Female ,Octreotide ,Retrospective Studies ,Tumor Burden - Published
- 2019
17. [Clinicopathologic characterization of malignant mixed tumor of the skin accompanied by eccrine porocarcinoma]
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X F, Zhou, Q G, Yan, X J, Guo, X D, Gou, J Q, Han, J L, Ye, H Y, Zhang, and F M, Wang
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Diagnosis, Differential ,Male ,Proto-Oncogene Proteins c-kit ,Sweat Gland Neoplasms ,Mixed Tumor, Malignant ,Skin Neoplasms ,Humans ,Eccrine Porocarcinoma ,Middle Aged ,Immunohistochemistry ,Epithelium ,Myoepithelioma - Published
- 2018
18. MiR-1275 promotes non-small cell lung cancer cell proliferation and metastasis by regulating LZTS3 expression
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J, He, L, Yu, C-M, Wang, and X-F, Zhou
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Male ,Binding Sites ,Lung Neoplasms ,Tumor Suppressor Proteins ,Middle Aged ,Up-Regulation ,Gene Expression Regulation, Neoplastic ,MicroRNAs ,A549 Cells ,Cell Movement ,Carcinoma, Non-Small-Cell Lung ,Humans ,Female ,3' Untranslated Regions ,Aged ,Cell Proliferation ,Signal Transduction - Abstract
To detect the expressions of micro-ribonucleic acid 1275 (miR-1275) in non-small cell lung cancer (NSCLC) tissues and cells, analyze the correlations of the expression of miR-1275 with the clinicopathological features of NSCLC, and explore its biological function and potential molecular mechanism.Quantitative Real-time polymerase chain reaction (qRT-PCR) was used to detect the relative expression levels of miR-1275 in NSCLC tissues and cells. The correlations of miR-1275 expression with clinicopathological features of NSCLC were statistically analyzed. Clone formation assay, flow cytometry and transwell assay were used to detect the effects of interfering in miR-1275 expression on biological behaviors of NSCLC cells. Bioinformatics was used to predict the downstream target genes of miR-1275, and qRT-PCR and Western blotting were utilized for verification. Dual luciferase reporter gene assay was used to validate the binding of miR-1275 to its target gene.The results of qRT-PCR showed that among 70 cases of tissues from NSCLC patients, 52 cases had up-regulated miR-1275 expressions. MiR-1275 expression was increased in NSCLC cells compared with that in 16 human bronchial epithelial (16HBE) cells. Interfering in miR-1275 expression could inhibit the proliferation, invasion and metastasis of NSCLC cells. Bioinformatics prediction discovered that leucine zipper putative tumor suppressor 3 (LZTS3) might be a target gene of miR-1275. Dual luciferase reporter assay confirmed that the two genes could bind directly.MiR-1275 is relatively highly expressed in NSCLC. Highly expressed miR-1275 can promote the proliferation and metastasis of NSCLC through regulating the expression of LZTS3.
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- 2018
19. [Downregulation of large conductance calcium-activated potassium channels in paraventricular nucleus contributes to sympathoexcitation in rats with chronic heart failure]
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R J, Wang, M L, Wen, Q, Zhou, X W, Wei, H, Li, Y B, Zhao, Y F, Qi, J, Luan, and X F, Zhou
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Heart Failure ,Male ,Rats, Sprague-Dawley ,Random Allocation ,Sympathetic Nervous System ,Animals ,Down-Regulation ,Large-Conductance Calcium-Activated Potassium Channels ,Rats, Wistar ,Paraventricular Hypothalamic Nucleus ,Rats - Published
- 2018
20. GINKGETIN AMELIORATES NEUROPATHOLOGICAL CHANGES IN APP/PS1 TRANSGENICAL MICE MODEL
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X.-F. Zhou, Y.-J. Wang, and Yue-Qin Zeng
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biology ,Amyloid beta ,Ginkgo biloba ,business.industry ,Inflammation ,Pharmacology ,medicine.disease ,medicine.disease_cause ,biology.organism_classification ,Neuroprotection ,Astrogliosis ,Pathogenesis ,mental disorders ,medicine ,biology.protein ,Cerebral amyloid angiopathy ,medicine.symptom ,business ,Oxidative stress - Abstract
The extracellular accumulation of amyloid beta protein (Aβ), reactive gliosis and cerebral amyloid angiopathy (CAA) play critical roles in the pathogenesis of Alzheimer’s disease (AD). Ginkgetin, a biflavone isolated from Ginkgo biloba leaves, was previously reported to exhibit strong neuroprotection against cytotoxic insults induced by oxidative stress and amyloid beta, but it remains unclear whether ginkgetin has therapeutic effect on Alzheimer’s disease (AD) in vivo. In the present study, we investigated 9 months treatment effects of ginkgetin diet in APP/PS1 mice. Our results show that ginkgetin can significantly reduce plasma Aβ levels 59% and Aβ plaque 51% in the brain of APP/PS1 transgenic mice (P
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- 2015
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21. Structure, photoluminescence, and thermal quenching properties of Eu doped Sr2AlxSi5−xN8−x/3red phosphors
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X. L. Ma, Liquan Chen, Y. S. Hu, X. F. Zhou, Ronghui Liu, Yuanhong Liu, Wei Gao, and Weidong Zhuang
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Full width at half maximum ,Photoluminescence ,Materials science ,Electron diffraction ,Rietveld refinement ,Doping ,Analytical chemistry ,General Materials Science ,Phosphor ,General Chemistry ,Crystal structure ,Selected area diffraction ,Condensed Matter Physics - Abstract
Eu2+ doped Sr2AlxSi5−xN8−x/3 red phosphors have been synthesized by a solid state reaction method, with the aim of improving their thermal quenching properties. The XRD patterns confirm that Al3+ can efficiently substitute Si4+ in the Eu2+ doped Sr2Si5N8 host. The crystal structure is studied by Rietveld refinement, selected-area electron diffraction (SAED) and solid-state NMR analysis. With an increase in x, the emission spectra show no obvious shift and the full width at half maximum (FWHM) increases from 86 to 94.2 nm. Remarkably, the thermal quenching properties are obviously improved as appropriate Al3+ substituted Si4+. The corresponding mechanism is discussed in detail based on the influence of size mismatch and the configurational coordinate model.
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- 2015
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22. [Transforming growth factor-β1 small interfering RNA regulates platelet-derived growth factor and phosphorylated extracellular regulated protein kinase in rats with hepatic fibrosis: an experimental study]
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X F, Zhou, Y J, Jiang, Y, Zhang, H, Sun, Q, Liu, and X F, Shi
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Liver Cirrhosis ,Male ,Platelet-Derived Growth Factor ,Rats, Sprague-Dawley ,Transforming Growth Factor beta1 ,Transforming Growth Factor beta ,Transforming Growth Factors ,Animals ,RNA, Small Interfering ,Protein Kinases ,Rats - Published
- 2017
23. [Value of neutrophil-lymphocyte ratio in predicting hepatitis B-related liver failure]
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Y, Fan, X, Li, X F, Zhou, D Z, Zhang, and X F, Shi
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Hepatitis B, Chronic ,Neutrophils ,Predictive Value of Tests ,Risk Factors ,Acute-On-Chronic Liver Failure ,Humans ,Lymphocytes ,Hepatitis B - Published
- 2017
24. [Effects of chronic intermittent hypoxia on left ventricular myocardial contractibility in a rabbit model of obstructive sleep apnea]
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L F, Xu, Y F, Cai, K, Hu, S, Tang, X F, Zhou, and H M, Li
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Sleep Apnea, Obstructive ,Heart Ventricles ,Myocardium ,Animals ,Blood Pressure ,Rabbits ,Hypoxia ,Ventricular Function, Left - Published
- 2017
25. Novel magnesium borides and their superconductivity
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M. M. Davari Esfahani, Artem R. Oganov, Qiang Zhu, X-F. Zhou, Shengnan Wang, Huafeng Dong, and Maksim Rakitin
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Superconductivity ,Coupling constant ,Materials science ,Condensed matter physics ,Magnesium ,Condensed Matter - Superconductivity ,Ab initio ,General Physics and Astronomy ,chemistry.chemical_element ,FOS: Physical sciences ,02 engineering and technology ,021001 nanoscience & nanotechnology ,01 natural sciences ,Decomposition ,Pressure range ,Superconductivity (cond-mat.supr-con) ,chemistry ,0103 physical sciences ,Binary system ,Physical and Theoretical Chemistry ,010306 general physics ,0210 nano-technology ,Boron - Abstract
With the motivation of searching for new superconductors in the Mg-B system, we performed ab initio evolutionary searches for all the stable compounds in this binary system in the pressure range of 0-200 GPa. We found previously unknown, yet thermodynamically stable, compositions MgB$_3$ and Mg$_3$B$_{10}$. Experimentally known MgB$_2$ is stable in the entire pressure range 0-200 GPa, while MgB$_7$ and MgB$_{12}$ are stable at pressures below 90 GPa and 35 GPa, respectively. We predict a reentrant behavior for MgB$_4$, which becomes unstable against decomposition into MgB$_2$ and MgB$_7$ at 4 GPa and then becomes stable above 61 GPa. We find ubiquity of phases with boron sandwich structures analogous to the AlB$_2$-type structure. However, with the exception of MgB$_2$, all other magnesium borides have low electron-phonon coupling constants $\lambda$ of 0.32 to 0.39 and are predicted to have T$_c$ below 3 K., Comment: 13 pages, 10 figures. This manuscript has Supplemental Materials
- Published
- 2017
26. Platinum Nanoparticles Supported on Hierarchical Carbon Foams for Electrocatalytic Oxidation of Methanol
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Xiaodan Huang, Xiaojun Bian, Kun Qian, Baohong Liu, Kai Guo, Lei Liao, Chengzhong Yu, Chang Ji, and X. F. Zhou
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Nanocomposite ,Materials science ,Inorganic chemistry ,chemistry.chemical_element ,Carbon black ,Electrocatalyst ,Platinum nanoparticles ,Catalysis ,chemistry.chemical_compound ,Fuel Technology ,chemistry ,Chemical engineering ,Specific surface area ,Materials Chemistry ,Electrochemistry ,Methanol ,skin and connective tissue diseases ,Carbon - Abstract
A nanocomposite of platinum-loaded macroporous carbon foams (Pt/MCF) has been developed as an electrocatalyst for methanol oxidation reaction (MOR). The physical properties of MCF were characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), and nitrogen sorption isotherm. Cyclic voltammograms show that the Pt/MCF catalyst, which possesses a specific hierarchical structure, has much larger electrochemical surface area than Pt supported on Vulcan XC-72 carbon black (Pt/C). Pt/MCF also exhibits superior electrocatalytic activity for MOR, mostly due to MCF contains well developed porosity (i.e., micro-, meso-, and macropores) which results in large specific surface area and pore volume.
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- 2014
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27. Giant temperature coefficient of resistance in Co-doped ZnO thin films
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X. F. Zhou, R. Y. Hao, C. L. He, H. Yan, Ming-Hui Lu, and Hui Zhang
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Materials science ,Electrical resistivity and conductivity ,Doping ,Thermistor ,Analytical chemistry ,General Materials Science ,General Chemistry ,Substrate (electronics) ,Thin film ,Temperature coefficient ,Pulsed laser deposition ,Amorphous solid - Abstract
A novel high-performance thermistor material based on Co-doped ZnO thin films is presented. The films were deposited by the pulsed laser deposition technique on Si (111) single-crystal substrates. The structural and electronic transport properties were correlated as a function of parameters such as substrate temperature and Co-doped content for Zn1−x Co x O (x=0.005,0.05,0.10 and 0.15) to prepare these films. The Zn1−x Co x O films were deposited at various substrate temperatures between 20 and 280 °C. A value of 20 %/K for the negative temperature coefficient of resistance (TCR) with a wide range near room temperature was obtained. It was found that both TCR vs. temperature behavior and TCR value were strongly affected by cobalt doping level and substrate temperature. In addition, a maximal TCR value of over 20 % K−1 having a resistivity value of 3.6 Ω cm was observed in a Zn0.9Co0.1O film near 260 °C, which was deposited at 120 °C and shown to be amorphous by X-ray diffraction. The result proved that the optimal Co concentration could help us to achieve giant TCR in Co-doped ZnO films. Meanwhile, the resistivities of the films ranged from 0.4 to 270 Ω cm. A Co-doped ZnO/Si film is a strong candidate of thermometric materials for non-cooling and high-performance bolometric applications.
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- 2013
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28. [Correlation between expression of long non-coding RNA ZXF1 and prognosis of lung adenocarcinoma and its potential molecular mechanism]
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G F, Pan, X F, Zhou, and J P, Zhao
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Male ,Lung Neoplasms ,Age Factors ,Adenocarcinoma of Lung ,Cell Differentiation ,Kaplan-Meier Estimate ,Adenocarcinoma ,Middle Aged ,Prognosis ,Real-Time Polymerase Chain Reaction ,Survival Analysis ,Disease-Free Survival ,Neoplasm Proteins ,Up-Regulation ,Sex Factors ,A549 Cells ,Lymphatic Metastasis ,Humans ,Regression Analysis ,Female ,RNA, Long Noncoding ,RNA, Messenger ,Precancerous Conditions - Published
- 2017
29. [Risk factors for lower extremity amputation in patients with diabetic foot]
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B, Xu, C Z, Yang, S B, Wu, D, Zhang, L N, Wang, L, Xiao, Y, Chen, C R, Wang, A, Tong, X F, Zhou, X H, Li, and X H, Guan
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Glycated Hemoglobin ,Male ,China ,Foot ,Incidence ,Coronary Artery Disease ,Middle Aged ,Risk Assessment ,Amputation, Surgical ,Diabetic Foot ,Gangrene ,Diabetes Mellitus, Type 1 ,Diabetes Mellitus, Type 2 ,Risk Factors ,Humans ,Female ,Aged ,Retrospective Studies - Published
- 2017
30. Effects of crystallinity on laser-induced voltage effect from Zn0.9Co0.1O thin film
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Ming-Hui Lu, X. F. Zhou, R. Y. Hao, Hui Zhang, H. Yan, and C. L. He
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Electron mobility ,Materials science ,Silicon ,Analytical chemistry ,chemistry.chemical_element ,General Chemistry ,Substrate (electronics) ,Pulsed laser deposition ,Crystallinity ,Carbon film ,chemistry ,Sapphire ,General Materials Science ,Thin film - Abstract
Co-doped ZnO epilayer films were grown by pulsed laser deposition (PLD) on vicinal cut silicon and sapphire substrates. Changes in deposition time were observed as a moderate effect on the quality of the films, and the influence of the thickness on thermoelectric signals from Zn0.9Co0.1O thin films were discussed. The effect of one of the main deposition parameters, the deposition time, on the crystallinity and electron mobility properties of the Zn0.9Co0.1O thin films grown on sapphire was investigated by means of X-ray diffraction (XRD) and laser-induced voltage (LIV) effect. It shown that the XRD rocking curve full-width half-maximun (FWHM) decreased as time increasing, and the LIV signals were observed along the tilting angle of the substrate orientation when the pulsed KrF excimer laser of 248 nm were irradiated on the films. When the films illuminated in pulse lasers, the highest signals occurred in the films with best crystalline quality, and the signals were higher in the films grown on sapphire than those on silicon substrates. It suggested that the electrical resistivity and electron mobility have close relations with not only the crystallinity but also with the interface of the thin films.
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- 2013
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31. [Cluster analysis of the clinical presentations in patients with moderate-to-severe obstructive sleep apnea syndrome and its significance]
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S, Tang, X F, Zhou, K, Hu, L F, Xu, J X, Yu, and H M, Li
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Adult ,Pulmonary Disease, Chronic Obstructive ,Sleep Apnea, Obstructive ,Sleep Initiation and Maintenance Disorders ,Hypertension ,Diabetes Mellitus ,Cluster Analysis ,Humans ,Comorbidity ,Coronary Artery Disease ,Sleep ,Retrospective Studies - Abstract
To analyze subtypes of the clinical presentation of moderate-to-severe obstructive sleep apnea syndrome (OSAS) by cluster analysis and to explore its significance.A retrospective analysis was performed on the data of adult moderate-to-severe OSAS patients, which were diagnosed in Respiratory Department, Renmin Hospital of Wuhan University from October 2012 to October 2015. Fifteen kinds of clinical presentations were included in the cluster analysis, and analysis of characteristic of each cluster was then performed after category.Patients were classified as three distinct clusters. They were identified as "daytime sleepiness group" , "night insomnia group" and "minimally symptomatic group" , consisting of 450 cases (44.64%), 351 cases (34.82%) and 207 cases (20.54%) of the entire cohort. Members in daytime sleepiness group had the highest probability of daytime sleepiness, tiredness, irritableness and the highest Epworth Sleeping Scale score[329 cases (73.11%), 280 cases (62.22%), 223 cases (49.56%) and (13.50±4.93) points], members in night insomnia group had the highest probability of complaining of insomnia, nocturia, night sweats, apnea and awakening[177 cases (50.43%), 157 cases (44.73%), 130 cases (37.04%), 296 cases (84.33%), 182 cases (51.85%)], the probability of having typical symptoms above was the lowest in minimally symptomatic group, but these patients were more likely to have related comorbidities: hypertension, coronary heart disease, arrhythmia, chronic obstructive pulmonary disease and gastroesophageal reflux disease[118 cases (57.00%), 41 cases (19.81%), 44 cases (21.26%), 34 cases (16.43%), 38 cases (18.36%)]; all above results were significantly higher than the other two groups (P0.012 5). The rate of diabetes in minimally symptomatic group[28 cases (13.53%)]was also higher but the difference was not statistical significance.Cluster analysis contributes to classify multiple clinical presentations of OSAS patients, which has important significance for recognizing disease heterogeneity and early diagnosis.
- Published
- 2016
32. Electrochemical Detection and Characterisation of Polymer Nanoparticles
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R. G. Compton, Wei Cheng, Kristina Tschulik, X.‐F. Zhou, and Christopher Batchelor-McAuley
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chemistry.chemical_classification ,Aqueous solution ,Materials science ,Nanoparticle ,Polymer ,Electrochemical detection ,Electrochemistry ,Rapid detection ,Analytical Chemistry ,chemistry.chemical_compound ,Monomer ,chemistry ,Chemical engineering ,Electrode ,Organic chemistry - Abstract
We report the detection and characterisation of polymer nanoparticles using electrochemistry using poly(N-vinylcarbazole) nanoparticles (PVK NPs) as a model system. These were synthesised using the reprecipitation method. The number of electrons (n=2) transferred per PVK monomer was characterised by drop-casting method. Sticking and sensing experiments were then conducted, which involve PVK nanoparticle immobilisation on the electrode surface and subsequent oxidative sensing, to enable rapid detection of polymer nanoparticles in aqueous solution. It is shown for the first time, that using this "stick and sense" method, polymer nanoparticles in aqueous solution can be immobilised, preconcentrated and quantified. © 2014 WILEY-VCH Verlag GmbH and Co. KGaA, Weinheim.
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- 2016
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33. [Clinical analysis of laparoscopic surgery in patients with maintenance hemodialysis and colon cancer]
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D X, Chen, X A, Zhan, Q S, Guo, X F, Zhou, and X J, Xu
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Postoperative Complications ,Renal Dialysis ,Colonic Neoplasms ,Drainage ,Humans ,Lymph Node Excision ,Laparoscopy ,Colorectal Neoplasms ,Retrospective Studies ,Uremia - Abstract
To explore the safety of laparoscopic assisted radical resection of colon cancer in uremic patients.Retrospective analysis of Zhejiang Jinhua Guangfu hospital 2012 March to 2015 March 5 cases of uremia patients complicated with colon cancer underwent laparoscopic assisted colorectal cancer radical resection, and compared with 10 cases, observing two groups of operative time, intraoperative bleeding volume, postoperative drainage volume, lymph nodes dissect, anal exhaust time, postoperative complications, postoperative hospitalization time and postoperative pathological staging.Before operation two groups of age, gender, tumor location was no significant difference (P0.05). In preoperative comorbidities uremic patients were significantly more than that of ordinary patients, mainly in cardiovascular complications, and patients in the two groups in operation time, intraoperative bleeding, post operative drainage volume, lymph node dissection numbers were no significant difference, the postoperative gastrointestinal function recovery was almost no difference, but postoperative hospitalization time significantly prolonged (P0.05).Patients with uremia as long as full preoperative preparation, perioperative management, plus timely hemodialysis, uremia patients undergoing laparoscopic assisted radical surgery is safe and feasible, and it is worth promoting.
- Published
- 2016
34. [Selective bladder preservation in muscle-invasive bladder cancer by transurethral resection combined with intravesical instillation therapy: analysis of clinical effect in the elderly]
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X F, Zhou, Z S, Ding, D B, Fang, J F, Wang, X, Chen, Z L, Fang, and N B, Liu
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Survival Rate ,Administration, Intravesical ,Urinary Bladder Neoplasms ,Quality of Life ,Humans ,Neoplasm Recurrence, Local ,Combined Modality Therapy ,Organ Sparing Treatments ,Retrospective Studies - Abstract
To explore the therapeutic effect and quality of life in elderly patients of muscle-invasive bladder cancer by transurethral resection combined with intravesical instillation therapy.From January 2005 to January 2015, 136 cases were diagnosed with T2 bladder cancer by transurethralplasmakinetic therapy or transurethral laser therapy. The data of 136 cases were analyzed retrospectively.In transurethralplasmakinetic therapy group, the overall survival rate was 73.3%, the cancer-specific survival rate was 85.6%, the average survival time were 65 months. In transurethral laser therapy group, the overall survival rate was 73.9%, the cancer-specific survivalrate was 87.2%, the average survival time were 70 months. Two methods also can improve the patient's quality of life.For the aged with invasive bladder cancer (T2), we could try the transurethral resection combined with intravesical instillation therapy.
- Published
- 2016
35. Genotypic diversity enhances invasive ability ofSpartina alterniflora
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X. Y. Wang, Xiao-Yong Chen, N. N. Xu, Shuo Yu, Jing Jiao, X. F. Zhou, M. M. Shi, and D. W. Shen
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Biomass (ecology) ,Genetic diversity ,biology ,Ecology ,Introduced species ,respiratory system ,Spartina alterniflora ,biology.organism_classification ,Invasive species ,Abundance (ecology) ,Genetic variation ,Genetics ,human activities ,Ecology, Evolution, Behavior and Systematics ,Diversity (business) - Abstract
Although genetic diversity is very important for alien species, which have to cope with new environments, little is known about the role that genetic diversity plays in their invasive success. In this study, we set up a manipulation experiment including three levels of genotypic diversity to test whether genotypic diversity can enhance the invasive ability of alien species, in our case the invasive Spartina alterniflora in China, and to infer the underlying mechanisms. There was no significant relationship between genotypic diversity and parameters of performance in the first year; however, from the summer of the second year onwards, genotypic diversity enhanced four of the six parameters of performance. After two growing seasons, there were significant positive relationships between genotypic diversity and maximum spread distance, patch size, shoot number per patch, and aboveground biomass. Moreover, abundance of the native dominant species Scirpus mariqueter was marginally significantly decreased with genotypic diversity of S. alterniflora, suggesting that enhanced invasive ability of S. alterniflora may have depressed the growth of the native species. There was no significant difference in most measures of performance among six genotypes, but we observed a transgressive over performance in four measures in multiple-genotype patches. At the end of the experiment, there were significant nonadditive effects of genotypic diversity according to Monte Carlo permutations, in six-genotype, but not three-genotype plots. Our results indicated that both additive and nonadditive effects played roles in the positive relationship between genetic diversity and invasion success, and nonadditive effects were stronger as duration increased.
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- 2012
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36. Reliability Assessment and Optimization of Double Random Vibration Systems based on PDEM
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X F Zhou, Y Q Dong, X J Wang, S Q Long, M J Xiang, X Wang, and S Z Yang
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Computer science ,Random vibration ,Reliability (statistics) ,Reliability engineering - Published
- 2019
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37. Preparation of smooth potassium hexatitanate nanofilms by sol–gel method
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Q. H. Qian, Xin Feng, Yuanyuan Hu, Ch. Liu, Xiaohua Lu, and X. F. Zhou
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Materials science ,Scanning electron microscope ,Mechanical Engineering ,Potassium ,Analytical chemistry ,chemistry.chemical_element ,Crystal growth ,Microstructure ,symbols.namesake ,chemistry ,Mechanics of Materials ,Transmission electron microscopy ,Electrode ,symbols ,General Materials Science ,Raman spectroscopy ,Sol-gel - Abstract
New nanosmooth potassium hexatitanate films have been prepared on crystalline Si (111) and ITO glass substrates by sol–gel method using Ti(n-OC4H9)4 and CH3COOK as precursors. Atomic force microscopy (AFM) topographic images were analyzed to select the optimal preparation conditions for the films. It is shown that the films consist of flat particles with the ratio of diameter to height around 11. The root mean square (RMS) roughness of the films based on the measurement of an area of 2,000 nm × 2,000 nm in AFM images is 6.4 nm. The crystal growth process of potassium hexatitanate film was characterized by XRD, Raman spectra, and TEM. The results showed that the crystal growth of potassium hexatitanate nanofilm is a confined growth mechanism. Electrochemical measurements demonstrated that the photocurrent of potassium hexatitanate film electrode is more stable than that of TiO2 film electrode.
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- 2007
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38. Sunitinib modulates the radiosensitivity of esophageal squamous cell carcinoma cells in vitro
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Y-Q, Ding, H-C, Zhu, X-C, Chen, X-C, Sun, X, Yang, Q, Qin, H, Zhang, Y, Yang, Y-H, Yang, L, Gao, J-D, Luo, and X-F, Zhou
- Subjects
Radiation-Sensitizing Agents ,Indoles ,Esophageal Neoplasms ,Blotting, Western ,Antineoplastic Agents ,Apoptosis ,Chemoradiotherapy ,Flow Cytometry ,Radiation Tolerance ,Cell Line, Tumor ,Carcinoma, Squamous Cell ,Sunitinib ,Humans ,DNA Breaks, Double-Stranded ,Pyrroles ,Esophageal Squamous Cell Carcinoma ,Cell Proliferation - Abstract
This study aims to explore the radiosensitivity of sunitinib on esophageal cancer cell lines. For in vitro studies, human esophageal squamous cell carcinoma (ESCC) cell lines were treated with sunitinib 24 hours before irradiation. ESCC cell lines were treated with sunitinib with or without radiation. Cell proliferation was detected by Cell Counting Kit 8 assay. Radiosensitization was evaluated by clonogenic survival assay. Cell apoptosis and cell cycle analysis were detected by flow cytometry. Deoxyribonucleic acid (DNA) double-strand breaks were performed by immunocytofluorescence analysis. Western blot analysis was used to determine the effect of sunitinib on radiation induced signal transduction. Sunitinib potently sensitized ESCC cells to radiation with a sensitization enhancement ratio of 1.13-1.72. Furthermore, sunitinib increased radiation induced DNA double-strand breaks, promoted the apoptosis of ESCC cells and induced the G2/M arrest. Radiosensitization was accompanied with enhanced apoptosis and regulated by the intrinsic pathway of apoptosis. Sunitinib sensitized ESCC cells to the cytotoxic effects of radiation. This compound is promising for future clinical trials with chemoradiation in esophageal cancer.
- Published
- 2015
39. 29th Annual Meeting • American Society of Preventive Oncology San Francisco, CA • March 13–15, 2005
- Author
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TR Newton, TE Crane, PM Marcus, KW Reeves, Q-W Jiang, B Turner, J. Hampton, Li-Na Mu, J.H. Hardin, N Kulin, T Rothermel, V Hartz, J Zhao, S-Z Yu, K Jackson, E Paskett, Q-Y Lu, KA Phillips, I Lipkus, Wei Cao, P.A. Newcomb, B Peterson, U Ladabaum, C McBride, L Cai, Anne McTiernan, JH Fowke, Jennifer S. Haas, R Sloane, J. McElroy, Leslie Bernstein, PM Reid, Ru-Hong Wang, S Liang, MT Goodman, Bao-Guo Ding, L Wilkens, Y Zhang, K. Karnofski, Melinda L. Irwin, DC Snyder, P. Newcomb, V. Chia, Yuko You Nai-chieh, Zuo-Feng Zhang, Loic Le Marchand, LN Kolonel, E Clipp, W Hauck, RA Hiatt, L-N Mu, Shun-Zhang Yu, J Marshall, R Ness, X Ma, J Morrow, T Brigham, S Van Bebber, R Myers, C Tatum, W Kraus, Kathy B. Baumgartner, D Weinberg, FR Johnson, S Ramsey, B-G Ding, M Potter, R Bostick, Catherine M. Alfano, Xue-Fu Zhou, Ashley Wilder Smith, T Hyslop, Cheryl L. Rock, MB Does, AS McAlearney, Amy Trentham-Dietz, DS Alberts, Bryce B. Reeve, Jeanne F. Nichols, W Demark-Wahnefried, J Walsh, Bilge Pakiz, RM Elashoff, L. Morimoto, G Maskarinec, L Thabane, S. Selvin, J Grana, S Motley, Z-F Zhang, D Lobach, IA Hakim, D Veenstra, Y Takata, CA Thomson, H Lu, Lin Cai, Binh H. Yang, Karla Kerlikowske, I Pagano, M Nagamine, M Miedzinksi, N Schlackman, C Metayer, Denise E. Wilfley, D Marshall, X-F Zhou, A Nomura, Rachel Ballard-Barbash, and Patricia A. Buffler
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Gerontology ,Oncology ,Epidemiology ,business.industry ,Medicine ,business - Published
- 2005
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40. Halo or skin in the excited states of some light mirror nuclei
- Author
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Guo-Liang Ma, Kun Wang, Yu-Gang Ma, W. Guo, W. Z. Jiang, Jingen Chen, X. F. Zhou, Y. B. Wei, Hui Zhang, Wen-Qing Shen, X. Z. Cai, C. Zhong, and Z. Z. Ren
- Subjects
Physics ,Nuclear and High Energy Physics ,Valence (chemistry) ,Proton ,Excited state ,Nuclear Theory ,Hadron ,Neutron ,Mirror nuclei ,Halo ,Atomic physics ,Nuclear Experiment ,Nucleon - Abstract
The properties of three pairs of mirror nuclei 13N- 13C, 15N- 15O and 21Na- 21Ne (these mirror nuclei are all made of a good inert core plus an unpaired valence nucleon) are investigated by using the nonlinear relativistic mean-field (RMF) theory. It is found that the calculated binding energies with two different parameter sets are very close to the experimental ones for both the ground states and the excited states except for the large deformed nuclei. The calculations show that the 2s1/2 excited states of 15N and of 21Na are both weakly bound with a proton halo and a proton skin (or a pigmy proton skin), respectively. In addition, the 1d5/2 excited state of 13C and the 2s1/2 excited state of 15O are also weakly bound with a neutron skin, respectively. The ratio of the valence nucleon radius to matter radius is deduced and it can be regarded as an additional criterion for the existence of exotic structure. The unbound 2s1/2 and 1d5/2 excited states of 13N are also discussed.
- Published
- 2004
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41. Boltzmann-Uehling-Uhlenbech calculation of total reaction cross-section and fragmentation cross-section
- Author
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Wen-Qing Shen, Guo-Liang Ma, X. F. Zhou, X. Z. Cai, W. Guo, HY(张虎勇) Zhang, Jingen Chen, Yan Wei, C. Zhong, Kun Wang, and Yu-Gang Ma
- Subjects
Nuclear physics ,Physics ,Nuclear and High Energy Physics ,symbols.namesake ,Density distribution ,Fragmentation (mass spectrometry) ,Boltzmann constant ,Hadron ,symbols ,Nuclear fusion ,Sigma ,Halo nucleus ,Halo - Abstract
$\sigma_{\rm R}$ , $\sigma_{-n}$ and $\sigma_{-2n}$ have been calculated via the BUU model with soft EOS and 0.8 times of $\sigma_{\rm Cug}$ . The density distribution without any adjustable parameters which comes from the RMF model has been introduced into the BUU calculation to replace the normally used one-parameter square-type distribution. The calculated results can reproduce the experimental data well for both halo- and stable-nuclei-induced reactions. Here $\sigma_{-n}$ or $\sigma_{-2n}$ is calculated as the difference between $\sigma_{\rm R}$ of halo nucleus and core nucleus, by assuming $\sigma_{\rm corr}\simeq 0$ . It indicates that this assumption works very well at high energy in the BUU calculation. More experimental measurements are necessary to test the validity of this assumption at intermediate energy.
- Published
- 2004
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42. POSSIBLE EXOTIC STRUCTURE IN LIGHT PROTON-RICH NUCLEI
- Author
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Hui Zhang, D. Q. Fang, Wen-Qing Shen, Zhi-Yu Sun, W.L. Zhan, J. S. Wang, C. Zhong, Z. Z. Ren, Y. B. Wei, Guoqing Xiao, G. L. Ma, Min Wang, Zhong-Yan Guo, Zuo Xiao, J. Bai, Z. G. Hu, Jing Li, X. Z. Cai, Chen Zhen, J. G. Chen, Wei Li, X. F. Zhou, Lei Chen, Jiang Li, Heng Xu, Kun Wang, and Yu-Gang Ma
- Subjects
Radioactive ion beams ,Physics ,Nuclear and High Energy Physics ,Isotope ,General Physics and Astronomy ,Astronomy and Astrophysics ,Hartree ,Nuclear physics ,Fragmentation (mass spectrometry) ,Transmission method ,Halo ,Atomic physics ,Nucleon ,Projectile fragmentation - Abstract
Radioactive ion beams were produced through the projectile fragmentation induced by 69MeV/nucleon 36 Ar primary beam on a 9 Be target. Measurements of reaction cross section (σR) for some proton-rich nuclei on carbon target at intermediate energies around 30MeV/nucleon have been performed on RIBLL of HIRFL by transmission method and transmission plus transportation method. The experimental σR values for 23Al and 27P are abnormally large compared with their neighboring nuclei and that of 17F has an enhancement compared with the neighboring isotopes. It suggests anomalously large matter root-mean-square radii and proton halo structure in 23 Al and 27 P . The experimental σR values and momentum distribution of fragmentation reaction product for 31 Cl , 32 Cl , 33 Cl , 28 S , 29 S were performed also on RIBLL by transmission and transportation method. These data are in analyzing. The calculation of relativistic density-dependent Hartree shows that the nuclei 23 Al , 27 P , 31 Cl may have proton-halo structure and 17F, 32Cl may have proton-skin structure. New experiment on the search for new nuclides 25 P and 26 S in proton drip line is also described. The significance of these measurements and possible proton halo and skin for light proton-rich nuclei has been discussed.
- Published
- 2003
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43. Bond strength measurement between glass fibres and epoxy resin at elevated temperatures using the pull-out and push-out techniques
- Author
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E. Mäder, S. Zhandarov, S. L. Gao, X.-F. Zhou, and S. R. Nutt
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Materials science ,Bond strength ,Atomic force microscopy ,Surfaces and Interfaces ,General Chemistry ,Epoxy ,Activation energy ,Surface finish ,Surfaces, Coatings and Films ,Push out ,Mechanics of Materials ,visual_art ,Materials Chemistry ,visual_art.visual_art_medium ,Composite material - Abstract
Pull-out and push-out measurements were performed on glass fibres in an epoxy resin to determine the dependence of bond strength on test temperature and on fibre surface treatment. A comparative analysis of the two techniques was carried out to elucidate elementary processes of polymer-fibre debonding and to determine energy values for adhesional bonds. Differences in bond strength values for pull-out and push-out tests were attributed to failure mechanisms that were either interface-controlled or matrix-controlled. Evidence for the different failure mechanisms characteristic of the two test techniques was provided by an estimation of failure parameters, such as the activation energy for debonding. Failure mechanisms also were manifest in AFM images, showing differences in topography and roughness that depended on fibre surface treatment, test geometry, and test temperature.
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- 2002
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44. Interfacial properties of polymer composites measured by push-out and fragmentation tests
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X.-F Zhou, Steve Nutt, and Hanoch Daniel Wagner
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Work (thermodynamics) ,Materials science ,Bond strength ,Glass fiber ,Fragmentation (computing) ,Epoxy ,Paint adhesion testing ,Surface energy ,Stress (mechanics) ,Mechanics of Materials ,visual_art ,Ceramics and Composites ,visual_art.visual_art_medium ,Composite material - Abstract
The interfacial properties for E-glass/epoxy composites were measured using push-out tests and single fiber fragmentation tests. Theoretical models for both stress-based and energy-based criteria were used to interpret the experimental results. Fibers treated with γ-aminopropyl-triethoxysilane (γ-APS) showed higher bond strength (∼1.7 times higher) and interfacial toughness (∼1.9 times higher) than those of unsized E-glass based composites. However, the average interfacial toughness obtained from fragmentation tests was about six times higher than that obtained from push-out tests. Considering the analytical frameworks employed to interpret the values measured in the present work, the fragmentation test is a more appropriate method to obtain interfacial energy for polymeric composites, but both methods are appropriate for relative measurements of interface strength.
- Published
- 2001
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45. The BES upgrade
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G. S. Huang, X. C. Meng, J. Y. Zhang, J. Standifird, W. G. Yan, J. Oyang, Jun-Bing Ma, J. Schultz, M.H. Kelsey, J. Z. Bai, L. S. Wang, B. Yang, P. Zhang, Y. K. Heng, Y. Y. Zhang, Jun Wang, Chunmei Zhang, J. Li, Joseph Izen, H. Luo, Y. Yuan, Y. S. Zhu, B. W. Shen, Y. Q. Chen, Hao-Ze Chen, Z.R. Wan, Z. Q. Xu, H. Y. Sheng, Jiming Yang, H.G. Han, M. G. Zhao, X.M. Chu, C. X. Yu, Qiyang Zhang, Y. W. Liu, P. Wang, H. S. Mao, Zhengguo Zhao, G. Y. Hu, T. J. Wang, N. D. Qi, W.H. Li, G. P. Chen, M. Mandelkern, C. Z. Yuan, L. Y. Dong, Xinchou Lou, He-Run Yang, S.T. Xu, C.S. Yang, H. Z. Shi, B. S. Cheng, H. M. Liu, Dehong Zhan, X. F. Song, D. P. Stoker, P. F. Lang, M. Weaver, Y.Y. Du, D. Paluselli, R. B. Li, Y.Y. Jiang, D. Kong, H.Y. Lu, Qian Liu, L. Zhang, L. Z. Wang, B. K. Kim, X. Q. Hu, Y. H. Xie, J. H. Gu, Ming-Han Ye, Qi Liu, T. Hu, M. L. Gao, C. C. Xu, H. W. Zhao, Y. K. Que, J. Chen, Li Zhou, H. M. Hu, Cheng-Kui Li, J. C. Chen, R. Malchow, D. X. Zhao, B. Y. Zhang, Jiurong Liu, Y. Z. Sun, Y. Y. Wang, J. Fang, L. S. Zheng, Wei Li, C. D. Qian, M. He, H. B. Li, W. Y. Ding, C. Y. Yang, X. Y. Shen, S. D. Gu, Yuanbo Chen, X. L. Luo, D. L. Shen, D.J. Yang, Z. Z. Du, S. J. Sun, Xingzhu Cui, Z. X. Liu, B. D. Jones, Y. H. Qu, W. J. Xiong, J. L. Hu, Yue-Yuan Zhang, Q. Xie, H. L. Ni, S. Q. Tang, C. M. Yang, G. S. Varner, Y. Jin, G. A. Yang, K. J. Zhu, W. X. Gu, W. H. Toki, X. Xiao, S.C. Zheng, S. Q. Gao, Z. J. Ke, Z. P. Zheng, W. Dunwoodie, Y. F. Lai, P. P. Xie, C.C. Zhong, X. Ju, G. L. Tong, B. A. Zhuang, H. Shen, X. H. Mo, J. F. Qiu, L.G. Mu, Y. P. Tan, P. Q. Li, W. G. Li, J.S. Lou, S. M. Wang, Junguang Lu, Cunfeng Wei, H. L. Ding, S. W. Han, R. G. Liu, Y. J. Sun, Frank C. Porter, Jun Liu, B. Schmid, Q. H. Hu, H. S. Zhou, P. Gratton, J. Panetta, Y. C. Zhu, X. M. Xia, Xingguo Li, F. Sun, Z. W. Chai, J. Zhao, X. F. Zhou, Meng Wang, F. A. Harris, H.C. Bao, D. M. Xi, J. Yan, Lin. Zhang, Y. H. Yu, G. Rong, Jiang Changhui, E. C. Ma, H. L. Zhang, Stephen L. Olsen, D. H. Zhang, C. S. Yu, A. J. Lankford, X. N. Li, D. G. Hitlin, J. H. Liu, Michael Schernau, W. Yang, J. Nie, Y. Y. Shao, C. S. Gao, Jinxing Zheng, J. D. Huang, F. Wang, Z. P. Mao, Q. M. Zhu, H. S. Sun, Z. Q. Yu, Y. N. Guo, F. Y. Li, J. W. Zhang, W. Z. Fang, B. Lowery, Y. B. Chen, Y. L. Han, S. Q. Luo, I. Blum, Y. Z. Huang, Q. Y. Li, J. He, S. Q. Zhang, W.L. Yao, G.P. Zho, L. J. Pan, Bing Zhou, W. R. Zhao, X. R. Qi, Yuehong Xie, H. B. Hu, P. L. Wang, and Xuan Yang
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Physics ,Nuclear and High Energy Physics ,Spectrometer ,Physics::Instrumentation and Detectors ,Detector ,Solenoid ,Particle accelerator ,Computer Science::Digital Libraries ,Computer Science::Computers and Society ,Particle detector ,law.invention ,Nuclear physics ,Upgrade ,Beijing ,law ,Physics::Accelerator Physics ,High Energy Physics::Experiment ,Collider ,Instrumentation - Abstract
The Beijing Spectrometer (BES) detector is a general purpose solenoid detector at the Beijing Electron Positron Collider (BEPC) in Beijing, China, that has collected large numbers of J/ψ, ψ′, Ds, D and τ events. In this paper, we describe the recent upgrade of the initial BES detector (BESI) to the improved BESII detector.
- Published
- 2001
- Full Text
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46. Fragmentation of two-fiber hybrid microcomposites: stress concentration factors and interfacial adhesion
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X.-F. Zhou and Hanoch Daniel Wagner
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chemistry.chemical_classification ,Materials science ,Glass fiber ,General Engineering ,Fracture mechanics ,Epoxy ,Polymer ,Aramid ,Synthetic fiber ,chemistry ,visual_art ,Ceramics and Composites ,Shear stress ,visual_art.visual_art_medium ,Composite material ,Stress concentration - Abstract
Stress concentration profiles resulting from the progressive fragmentation of a single fiber, and fiber/polymer interfacial adhesion, were assessed by testing a two-fiber hybrid microcomposite. The specimen consisted of a highly pre-stressed E-glass fiber and a lightly stressed Kevlar fiber, embedded in an epoxy film. The large pre-stress ensured saturation of the fragmentation process in the glass fiber. The interfacial adhesion was quantified by an energy balance approach as well as by a conventional stress balance (Kelly–Tyson) scheme. The stress concentration profiles induced in the Kevlar fiber by breaks in the nearby E-glass fiber were measured by micro-Raman spectroscopy, using several interfiber distances. The experimental results were compared with an extension of our earlier theoretical scheme for the stress concentration factor profile.
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- 2000
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47. Stress concentrations caused by fiber failure in two-dimensional composites
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Hanoch Daniel Wagner and X.-F. Zhou
- Subjects
symbols.namesake ,Materials science ,General Engineering ,Ceramics and Composites ,symbols ,Composite material ,Raman spectroscopy ,Spectroscopy ,Close contact ,Stress concentration - Abstract
In the process of fracture of fiber-reinforced composites, the stress concentrations caused by the redistribution of stress from a failed fiber to its intact adjacent neighboring fibers play a substantial role, as they determine the overall failure pattern of the composites. In the present article we propose a new model for the stress concentration factors (SCFs) in two-dimensional unidirectional composites. This model is based on an earlier shear-lag scheme which is here modified in several respects: a new shear-lag constant βN (proposed by Nayfeh) is included (which replaces the classical shear-lag constant of Cox, βC), and the effects of fiber/matrix debonding and fiber/matrix interfacial friction are incorporated. We find that the proposed model is in good agreement with recently published Raman spectroscopy results. When the fibers are in close contact, the SCF is found to possess a maximum value of 1.33, identical with the classical result of Hedgepeth and Van Dyke. However, unlike the scheme of Hedgepeth and Van Dyke, the SCF decreases with increasing interfiber distance, similar to more recent models, but in closer agreement than these models with the micro-Raman spectroscopy data.
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- 1999
- Full Text
- View/download PDF
48. Evidence for the leptonic decay D→μν
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J. Panetta, O. Bardon, S. M. Chen, Y. C. Zhu, E. Soderstrom, Wei Li, K. K. Young, P. L. Wang, X. F. Zhou, H. Y. Sheng, L. J. Pan, C. X. Yu, Q. Liu, Y. Luo, N. D. Qi, Michael J. Fero, Q. Y. Li, C. M. Yang, G. Zioulas, S. Q. Zhang, J. He, Chun-Hua Jiang, R. B. Li, H. S. Mao, S. Z. Lin, W. R. Zhao, H. W. Zhao, J. C. Li, Y. Zhang, S. Whittaker, J. G. Lu, F. A. Harris, L. Jones, T. H. Burnett, D. Kong, Y. P. Tan, S. Q. Tang, Y. H. Zhou, X. R. Shi, Z. P. Zheng, R. J. Wilson, D. H. Zhang, C. S. Yu, B. S. Cheng, G. P. Chen, S. Jin, L. P. Zhou, F. Wang, T. Hu, C. Y. Yang, Z. Z. Du, S. J. Sun, S. M. Wang, R. Cowan, Z. P. Mao, D. Z. Xu, G. L. Tong, W. D. Li, E. Prabhakar, J. H. Gu, X. C. Meng, B. A. Zhuang, F. Li, J. Standifird, H. L. Ni, R. G. Liu, J. Schultz, Xingzhu Cui, A. J. Lankford, B. Schmid, S. H. Kang, P. F. Lang, R. K. Yamamoto, G. P. Zhou, D. Q. Huang, D. G. Hitlin, Z. A. Liu, H. Shen, M. Mandelkern, C. Z. Yuan, Y. L. Han, A. J. S. Smith, Y. Jin, Q. P. Jia, Cunfeng Wei, J. Y. Zhang, E. Torrence, A. Breakstone, L. S. Wang, M. H. Ye, R. S. Xu, C. C. Zhang, S. T. Xue, X. L. Fan, B. K. Kim, P. Gratton, Y. S. Zhu, H. L. Ding, J. Z. Bai, W. G. Yan, Y. K. Que, X. M. Xia, J. W. Zhang, Y. Y. Zhang, M. L. Gao, J. W. Zhao, E. C. Ma, T. J. Wang, Z. Q. Xu, Lei Zhang, X. Q. Hu, Z. Q. Yu, D. Paluselli, Joseph Izen, H. L. Zhang, Y. F. Gu, G. Rong, H. Z. Shi, D. M. Xi, W. J. Wisniewski, Y. B. Chen, J. Yan, D. X. Zhao, B. Y. Zhang, M. He, J. Synodinos, Y. F. Lai, H. F. Chen, D. P. Stoker, J. C. Chen, D. L. Shen, Y. Y. Wang, R. Malchow, X. F. Song, X. Y. Shen, Jun-Bing Ma, J. Quigley, J. Oyang, J. Fang, L. S. Zheng, S. Q. Gao, Z. J. Ke, S. J. Chen, L. Z. Wang, S. D. Gu, G. Y. Hu, B. Lowery, M. H. Kelsey, M. G. Zhao, W. Dunwoodie, F. Sun, Q. M. Zhu, S. W. Han, M. Z. Wang, S. Q. Luo, H. S. Sun, X. N. Li, I. Blum, X. C. Lou, A. M. Ma, H. S. Zhou, J. H. Liu, Y. Z. Huang, Michael Schernau, W. Yang, F. C. Porter, J. Nie, Y. Y. Shao, C. S. Gao, Jinxing Zheng, W. X. Gu, Y. N. Guo, S. L. Olsen, W. H. Toki, H. B. Lan, S. Z. Ye, M. Hatanaka, P. P. Xie, P. Q. Li, W. G. Li, H. M. Liu, P. Wang, Y. B. Liu, Y. Q. Chen, and X. H. Li
- Subjects
Physics ,Nuclear and High Energy Physics ,Particle physics ,Muon ,Branching fraction ,Electron–positron annihilation ,Nuclear physics ,Pseudoscalar ,D meson ,High Energy Physics::Experiment ,Center of mass ,Exponential decay ,Neutrino ,Nuclear Experiment - Abstract
Purely leptonic decays of the charged D meson have been studied using the reaction e + e − →D ∗+ D − at a center of mass energy of 4.03 GeV. A search was performed for D→μνμ recoiling against a D0 or D+ which had been reconstructed from its hadronic decay products. A single event candidate was found in the reaction e + e − →D ∗+ D − , where D ∗+ →π + D 0 with the D0→K−π+, and the recoiling D− decaying via D − →μ − ν μ . This yields a branching fraction value B(D→μνμ)=0.08−0.05−0.02+0.16+0.05%, and a corresponding value of the pseudoscalar decay constant fD=300−150−40+180+80 MeV.
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- 1998
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49. Direct measurement ofB(Ds+→φX+)
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J. Z. Bai, O. Bardon, I. Blum, A. Breakstone, T. Burnett, G. P. Chen, H. F. Chen, J. Chen, S. J. Chen, S. M. Chen, Y. Chen, Y. B. Chen, Y. Q. Chen, B. S. Cheng, R. F. Cowan, X. Z. Cui, H. L. Ding, Z. Z. Du, W. Dunwoodie, X. L. Fan, J. Fang, C. S. Gao, M. L. Gao, S. Q. Gao, P. Gratton, J. H. Gu, S. D. Gu, W. X. Gu, Y. F. Gu, Y. N. Guo, S. W. Han, Y. Han, F. A. Harris, J. He, M. He, D. G. Hitlin, G. Y. Hu, T. Hu, X. Q. Hu, D. Q. Huang, Y. Z. Huang, J. M. Izen, C. H. Jiang, S. Jin, Y. Jin, L. Jones, S. H. Kang, Z. J. Ke, M. H. Kelsey, B. K. Kim, D. Kong, Y. F. Lai, H. B. Lan, P. F. Lang, A. Lankford, F. Li, J. Li, P. Q. Li, Q. Li, R. B. Li, W. Li, W. D. Li, W. G. Li, X. H. Li, X. N. Li, S. Z. Lin, H. M. Liu, J. Liu, J. H. Liu, Q. Liu, R. G. Liu, Y. Liu, Z. A. Liu, X. C. Lou, B. Lowery, J. G. Lu, J. Y. Lu, S. Luo, Y. Luo, A. M. Ma, E. C. Ma, J. M. Ma, R. Malchow, M. Mandelkern, H. S. Mao, Z. P. Mao, X. C. Meng, H. L. Ni, J. Nie, S. L. Olsen, J. Oyang, D. Paluselli, L. J. Pan, J. Panetta, F. Porter, E. Prabhakar, N. D. Qi, Y. K. Que, G. Rong, M. Schernau, B. Schmid, J. Schultz, Y. Y. Shao, D. L. Shen, H. Shen, X. Y. Shen, H. Y. Sheng, H. Z. Shi, E. Soderstrom, X. F. Song, J. Standifird, D. Stoker, F. Sun, H. S. Sun, S. J. Sun, J. Synodinos, Y. P. Tan, S. Q. Tang, W. Toki, G. L. Tong, F. Wang, L. S. Wang, L. Z. Wang, M. Wang, P. Wang, P. L. Wang, S. M. Wang, T. J. Wang, Y. Y. Wang, M. Weaver, C. L. Wei, W. J. Wisniewski, D. M. Xi, X. M. Xia, P. P. Xie, D. Z. Xu, R. S. Xu, Z. Q. Xu, S. T. Xue, J. Yan, W. G. Yan, C. M. Yang, C. Y. Yang, H. Yang, W. Yang, M. H. Ye, S. Z. Ye, K. Young, C. S. Yu, C. X. Yu, Z. Q. Yu, C. Z. Yuan, B. Y. Zhang, C. C. Zhang, D. H. Zhang, H. L. Zhang, J. Zhang, J. W. Zhang, L. S. Zhang, S. Q. Zhang, Y. Zhang, Y. Y. Zhang, D. X. Zhao, J. W. Zhao, M. Zhao, W. R. Zhao, J. P. Zheng, L. S. Zheng, Z. P. Zheng, G. P. Zhou, H. S. Zhou, L. Zhou, X. F. Zhou, Y. H. Zhou, Q. M. Zhu, Y. C. Zhu, Y. S. Zhu, and B. A. Zhuang
- Subjects
Hadronic decay ,Nuclear physics ,Physics ,Nuclear and High Energy Physics ,Pair production ,Luminosity (scattering theory) ,Branching fraction - Abstract
The absolute inclusive branching fraction of D_s^+→φX^+ has been measured from data collected by the BES detector at a center-of-mass energy of 4.03 GeV, corresponding to an integrated luminosity of 22.3 pb^(-1). At this energy, direct pair production e^+e^-→D_s^+D_s^- has been observed. We have selected D_s candidate events by reconstructing five hadronic decay modes D_s^+→φπ^+, K^(0*)K^+, K^0K^+, f0^(π+) and K^0K^-π^+π^+ and have searched for inclusive φ’s in the recoiling D_s^-. We observed three recoiling φ’s in the 166.4 ± 31.8 D_s candidate events, which leads to the absolute branching fraction B(D_s^+→φX^+)=(17.8(-7.2 -6.3)^(+15.1+0.6)) % and B(D_s-6.3+→φπ-6.3+)=(3.6_(-1.6 -1.3)(^_3.1+0.4) %. [S0556-2821(97)02423-5]
- Published
- 1998
- Full Text
- View/download PDF
50. Clinical characteristics of hypertension among victims in temporary shield district after Wenchuan earthquake in China
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X-C, Sun, X-F, Zhou, S, Chen, Y-X, Liu, Y-J, Wang, W, Zhang, and Y-C, Gao
- Subjects
Adult ,Aged, 80 and over ,Male ,China ,Logistic Models ,Hypertension ,Earthquakes ,Prevalence ,Humans ,Female ,Middle Aged ,Aged - Abstract
The frequency of hypertension events increases after a strong stress, but the mechanism has not been fully investigated. This study aimed to investigate its prevalence and risk factors after the Wenchuan earthquake (8.0 on the Richter scale), so as to provide a scientific basis for the prevention of hypertension in natural disasters or unforeseen accidents.Victims staying in temporary shelter for more than 1 year between March to May 2009 were randomly selected by multi-stage stratified cluster sampling method. And predetermined questionnaire survey and physical examination were carried out. In this study, all participants signed informed consent form.A total of 3230 victims aged over 20 years participated in this study, and the prevalence rate of hypertension among those victims was 24.08% (778/3230), most of whom had first-level hypertension; and the standardized rate was 18.44%. Moreover, the rates of hypertension awareness, dosing and controlling was only 34.58%, 53.43% and 17.84%, respectively. Among this cohort, the prevalence rate of hypertension increased with age (p0.01), but its distribution was similar between male and female victims (25.0% versus 23.58, p0.05). Logistic regression analysis showed that age, family history of hypertension, sleep quality, waist-to-hip ratio, body mass index and blood glucose level were risk factors of earthquake-induced hypertension among victims in temporary shield district, but mental stress was not.Though mental stress was not a risk factor of hypertension in this study, earthquake-induced hypertension should not be ignored. For victims after earthquake, the education of the prevention and treatment of hypertension should be strengthened.
- Published
- 2013
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