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148 results on '"Duan, Fujian"'

10. A wide neighbourhood primal-dual second-order corrector interior point algorithm for semidefinite optimization.

Author

Yang, Chong, Duan, Fujian, and Li, Xiangli

Subjects
*SEMIDEFINITE programming, *NEIGHBORHOODS, *INTERIOR-point methods, *KERNEL functions, *ALGORITHMS
Abstract

In this paper, we proposed a new primal-dual second-order corrector interior-point algorithm for semidefinite optimization. The algorithm is based on Darvay–Takács neighbourhood of the central path. In the new algorithm, the search directions are determined by the Darvay–Takács's direction and a second-order corrector direction in each iteration. The iteration complexity bound is $ O(\sqrt {n}L) $ O (n L) for the Nesterov–Todd scaling direction, which coincides with the best-known complexity results for semidefinite optimization. Finally, numerical experiments show that the proposed algorithm is promising. [ABSTRACT FROM AUTHOR]

Published
2024
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19. Isolated Coronary Artery Bypass Graft Combined With Bone Marrow Mononuclear Cells Delivered Through a Graft Vessel for Patients With Previous Myocardial Infarction and Chronic Heart Failure: A Single-Center, Randomized, Double-Blind, Placebo-Controlled Clinical Trial

Author

Hu, Shengshou, Liu, Sheng, Zheng, Zhe, Yuan, Xin, Li, Lihuan, Lu, Minjie, Shen, Rui, Duan, Fujian, Zhang, Xiaoling, Li, Jun, Liu, Xuewen, Song, Yunhu, Wang, Wei, Zhao, Shihua, He, Zuoxiang, Zhang, Hao, Yang, Keming, Feng, Wei, and Wang, Xin

Published
2011
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23. Fertilizer 15 N Fates of the Coastal Saline Soil-Wheat Systems with Different Salinization Degrees in the Yellow River Delta.

Author

Zhu, Kongming, Song, Fupeng, Duan, Fujian, Zhuge, Yuping, Chen, Weifeng, Yang, Quangang, Guo, Xinsong, Hong, Pizheng, Wan, Li, and Lin, Qun

Subjects
SOIL salinity, SOIL salinization, FERTILIZERS, SALINIZATION, SOIL profiles, SOIL erosion
Abstract

In order to clarify the fates of fertilizer N in coastal saline soil-wheat systems with different salinization degrees, this study was conducted to determine the 15N uptake rates in various parts of wheat plant at maturity stage and the residual 15N in three different saline soils and the 15N loss of soil-wheat systems by using the 15N-labeled urea N tracing method in the Yellow River Delta. The results showed that: (1) The increase of soil salinity from 0.2% to 1% promoted the wheat plant to absorb N from soil and not from fertilizer and significantly inhibited the dry matter mass accumulation and 15N uptakes of each wheat parts and whole plant, but especially increased the total N concentration of wheat roots, stems, leaves, and grains. The aggravation of soil salinity significantly enhanced the distribution ratios of 15N uptakes and Ndffs in the wheat roots, stems, and leaves to depress the salt stress. (2) The 15N residues were mainly concentrated in the 0~20 cm saline soil layer and decreased as the soil profile deepened from 0 to 100 cm; the 15N residues decreased in the 0~40 cm soil profile layer and accumulated in the 40~100 cm with the increase of soil salinization degrees significantly. (3) The fates of 15N applied to the coastal saline soil-wheat system were wheat uptakes 1.53~13.96%, soil residues 10.05~48.69%, losses 37.35~88.42%, with the lowest 15N uptake and utilization in the three saline soils, the highest residual rate in lightly saline soils, and the highest loss in moderately and heavily saline soils. The increase of soil salinity inhibits wheat uptakes and soil residues and intensifies the losses from fertilizer 15N. Therefore, the fate of fertilizer N losses significantly increased as the degree of soil salinity increased. The conventional N management that was extremely inefficient for more N loss should be optimized to enhance the N efficiency and wheat yield of the coastal saline soil-wheat system in the Yellow River Delta. [ABSTRACT FROM AUTHOR]

Published
2022
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25. The Role of the Submitral Apparatus in Hypertrophic Obstructive Cardiomyopathy

Author

Tao, Jia, Duan, Fujian, Long, Jili, Meng, Qinglong, Zhang, Bing, Zhu, Zhenhui, and Wang, Hao

Abstract

Hypertrophic cardiomyopathy (HCM) is the most common genetic cardiovascular disease, is characterized by unexplained hypertrophy of any myocardial segment, and has a prevalence of 0.2% to 0.5% among the general population. As one of the phenotypes of hypertrophic cardiomyopathy, left ventricular outflow tract obstruction (LVOTO) is associated with high morbidity and mortality, including cardiac death. The integration of various factors, including septal hypertrophy, malformation of the mitral valve apparatus, and an anomalous mitral subvalvular apparatus, may contribute to the occurrence of LVOTO. Previous studies have thoroughly discussed the role of the mitral valve in the mechanisms of systolic anterior motion and LVOTO. Recent studies have shown the importance of determining the potential mechanism of the submitral apparatus in inducing systolic anterior motion and LVOTO. The authors review recent advances in knowledge regarding the submitral apparatus of patients with hypertrophic cardiomyopathy.

Published
2023
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38. The clinical features, outcomes and genetic characteristics of hypertrophic cardiomyopathy patients with severe right ventricular hypertrophy

Author

Guo, Xiying, primary, Fan, Chaomei, additional, Tian, Lei, additional, Liu, Yanling, additional, Wang, Hongyue, additional, Zhao, Shihua, additional, Duan, Fujian, additional, Zhang, Xiuling, additional, Zhao, Xing, additional, Wang, Fengqi, additional, Zhu, Hongguang, additional, Lin, Aiqing, additional, Wu, Xia, additional, and Li, Yishi, additional

Published
2017
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41. Abstract 12446: Comparison of Midterm Outcomes After Surgical Correction in Patients With Biventricular Obstruction Hypertrophic Cardiomyopathy

Author

Zhai, Shanshan, primary, Fan, Chaomei, additional, Yan, Jun, additional, Wang, Shuiyun, additional, Song, Yunhu, additional, Yang, Yinjian, additional, Guo, Xiying, additional, An, Shuoyan, additional, Wang, Zhimin, additional, Duan, Fujian, additional, Zhao, Shihua, additional, and Li, Yishi, additional

Published
2016
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47. Effects of Bone Marrow Mononuclear Cells Delivered through a Graft Vessel for Patients with Previous Myocardial Infarction and Chronic Heart Failure: An Echocardiographic Study of Left Atrium Function.

Author

Qi, Zhi, Liu, Sheng, Lv, Xiuzhang, Duan, Fujian, Wang, Hao, Gao, Yiming, and Wang, Jianpeng

Subjects
CARDIOVASCULAR disease diagnosis, HYPERTENSION, TREATMENT of cardiomyopathies, LEFT heart atrium, ANGIOGRAPHY, ATRIAL natriuretic peptides, BONE marrow, CELL physiology, CHI-squared test, CHRONIC diseases, CORONARY artery bypass, ORGAN donation, ECHOCARDIOGRAPHY, HEART diseases, CARDIAC patients, CARDIAC surgery, HEART transplantation, LENGTH of stay in hospitals, PATIENT aftercare, INTENSIVE care units, MEDICAL needs assessment, STEM cells, TRANSPLANTATION of organs, tissues, etc., THREE-dimensional imaging, DATA analysis, SINGLE-photon emission computed tomography, RANDOMIZED controlled trials, CONTROL groups, HUMAN research subjects, PATIENT selection, BODY surface area, DATA analysis software, DESCRIPTIVE statistics, MONONUCLEAR leukocytes, VENTRICULAR ejection fraction, PHYSIOLOGY
Abstract

Objectives The graft of stem cells to treat ischemic cardiomyopathy is popular in many clinical trials. The aim of this study was to evaluate the effectiveness of isolated coronary artery bypass graft combined with bone marrow mononuclear cells (BMMNC) delivered through the graft vessels to improve left atrium (LA) function of patients with previous myocardial infarction and chronic heart failure using echocardiography. Methods Forty-two patients with previous myocardial infarction and chronic heart failure were randomly allocated to one of the two groups: coronary artery bypass graft (CABG) only (18 in CABG group) or CABG with BMMNC transplantation (24 in CABG + BMMNC group). Echocardiographic parameters were measured on two-dimensional (2D) imaging, three-dimensional imaging, 2D strain, and strain rate imaging, eight parameters were measured totally. Results Postoperative LA global strain (LAGS) versus Preoperative LAGS were 24.875 ± 1.588% versus 14.250 ± 1.281% (P < 0.05) in CABG + BMMMNC group and 17.556 ± 1.834% versus 13.111 ± 1.479% (P < 0.05) in CABG group, LVEF was 49.083 ± 1.914% versus 36.042 ± 1.185% (P < 0.05) in CABG + BMMMNC group and 41.389 ± 2.210% versus 34.667 ± 1.369% (P < 0.05) in CABG group, and LA volume (LAV) was 15.651 ± 0.631 mL versus 23.894 ± 0.831 mL (P < 0.05) in CABG + BMMMNC group and 21.429 ± 0.707 mL versus 22.379 ± 0.959 mL (P < 0.05) in CABG group. LAGS, LVEF, and LAV were significantly improved postoperatively in both groups. The degree of the improvement was significantly different between the two groups with the CABG + BMMNC group improved more versus the group of CABG only (P < 0.05). Postoperative LVEDV and LVESV were significantly improved compared with those obtained prior to operation in CABG + BMMNC group (P < 0.05). Conclusions The improvement of LA function in CABG + BMMNC group is better than CABG group. 2D strain imaging is a more sensitive tool to evaluate LA function. [ABSTRACT FROM AUTHOR]

Published
2016
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