173 results on '"Guang Zhi"'
Search Results
2. U-Pb dating of monazite in the Bainiuchang silver polymetallic deposit, Yunnan Province, and its limitation on Mesozoic mineralization
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Lu, Bo-de, Li, Wen-chang, Liu, Xue-long, Meng, Guang-zhi, Long, Qi-he, Zhang, Hong, Dao, Jun-shan, Li, Fang-lan, Zhou, Jie-hu, Fan, Mao-huang, Mi, Xue, Shi, Nan, and Cao, Zhen-liang
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- 2024
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3. Age-Dependent Female Survival Advantage in Hepatocellular Carcinoma: A Multicenter Cohort Study.
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Pang, Chuan, Li, Jian-Ming, Wang, Zhen, Luo, Yan-Chun, Cheng, Zhi-Gang, Han, Zhi-Yu, Liu, Fang-Yi, Yu, Xiao-Ling, Liang, Feng, Xi, Hong-Qing, Zheng, Rong-Qin, Cheng, Wen, Wei, Qiang, Yu, Song-Yuan, Li, Qin-Ying, He, Guang-Zhi, Yu, Jie, and Liang, Ping
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Hepatocellular carcinoma (HCC) has a higher incidence in males, but the association of sex with survival remains controversial. This study aimed to examine the effect of sex on HCC survival and its association with age. Among 33,238 patients with HCC from 12 Chinese tertiary hospitals, 4175 patients who underwent curative-intent hepatectomy or ablation were analyzed. Cancer-specific survival (CSS) was analyzed using Cox regression and Kaplan–Meier methods. Two propensity score methods and multiple mediation analysis were applied to mitigate confounding. To explore the effect of estrogen, a candidate sex-specific factor that changes with age, female participants' history of estrogen use, and survival were analyzed. There were 3321 males and 854 females included. A sex-related disparity of CSS was present and showed a typical age-dependent pattern: a female survival advantage over males appeared at the perimenopausal age of 45 to 54 years (hazard risk [HR], 0.77; 5-year CSS, 85.7% vs 70.6%; P =.018), peaked at the early postmenopausal age of 55 to 59 years (HR, 0.57; 5-year CSS, 89.8% vs 73.5%; P =.015), and was not present in the premenopausal (<45 y) and late postmenopausal groups (≥60 y). Consistent patterns were observed in patients after either ablation or hepatectomy. These results were sustained with propensity score analyses. Confounding or mediation effects accounted for only 19.5% of sex survival disparity. Female estrogen users had significantly longer CSS than nonusers (HR, 0.74; 5-year CSS, 79.6% vs 72.5%; P =.038). A female survival advantage in HCC depends on age, and this may be associated with age-dependent, sex-specific factors. [Display omitted] [ABSTRACT FROM AUTHOR]
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- 2024
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4. Aerodynamic characteristics of intercity train running on bridge under wind and rain environment.
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Zeng, Guang-Zhi, Li, Zhi-Wei, Huang, Sha, and Chen, Zheng-Wei
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RUNNING training ,RAINDROPS ,WIND speed ,SEVERE storms ,CROSSWINDS ,SOIL vibration - Abstract
Severe weather, especially strong rain-loaded wind, appears in coastal areas frequently. The strong wind driving raindrops worsens the wind effect and aggravates its impact on the intercity railway bridge and running trains. Based on the Euler multiphase model, for evaluating the effect of raindrops in wind and rain environment on running trains, a numerical simulation approach was adopted in this study, and the influence of the crosswind speed and rainfall with varying characteristic parameters on the aerodynamic performances of intercity trains was analysed. The results showed that the airflow around the train drove some raindrops to show a parabolic projectile feature, and the projectile distance increased as the crosswind speed increased, but the projectile distance showed no noticeable change with the rise in the rainfall, because the impact of the crosswind played a dominant role, while the raindrops provided additional effects in the wind and rain environment. Furthermore, in the wind and rain environment, as the crosswind speed increased and compared to that of the 10 m/s conditions, an increase of 354.37 %, 369.60 % and 355.07 % in C S , C L and C M of the whole train was shown in 30 m/s wind speed conditions, respectively, while, as the rainfall increased to 100 mm/h compared to that of the 20 mm/h, an increase of 6.41 % and 6.25 % in C S and C M of the whole train, as well as a decrease of 0.71 % in C L of the whole train was shown, respectively. [ABSTRACT FROM AUTHOR]
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- 2023
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5. Occurrence and risk factors for post-stroke delirium: A systematic review and meta-analysis.
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Zhang, Guo-Bin, Li, Hao-Yi, Yu, Wei-Jie, Ying, Yu-Zhe, Zheng, Dao, Zhang, Xiao-Kang, Wang, Yong-Gang, Shi, Guang-Zhi, and Huang, Hua-Wei
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Delirium is a significant health concern in acute stroke patients. We aim to systematically summarize existing evidence to conduct a meta-analysis to quantify the occurrence and risk factors for delirium after acute stroke. PubMed, EMBASE and MEDLINE were searched from inception to Feb. 2023 for prospective observational studies that reported the incidence or prevalence of post-stroke delirium and/or evaluated potential risk factors. The search strategy was created using controlled vocabulary terms and text words for stroke and delirium. We performed a meta-analysis of the estimates for occurrence and risk factors using random-effects models. Meta-regression and subgroup meta-analyses were conducted to explore the sources of heterogeneity. Study quality and quality of evidence were assessed using the customized Newcastle-Ottawa Scale and GRADE, respectively. Forty-nine studies that enrolled 12383 patients were included. The pooled occurrence rate of post-stroke delirium was 24.4 % (95 %CI, 20.4 %-28.9 %, I
2 =96.2 %). The pooled occurrence of hyperactive, hypoactive, and mixed delirium was 8.5 %, 5.7 % and 5.0 %, respectively. Study location, delirium assessment method and stroke type independently affected the heterogeneity of the pooled estimate of delirium. Statistically significant risk factors were older age, low education level, cigarette smoking, alcohol drinking, atrial fibrillation, lower ADL level, higher pre-stroke mRS score, premorbid cognitive impairment or dementia, aphasia, total anterior circulation impairment, higher National Institute of Health Stroke Scale score and infection. Delirium affected 1 in 4 acute stroke patients, although reported rates may depend on assessment method and stroke type. Timely prevention, recognition and intervention require prioritizing patients with dominant risk factors. • In this meta-analysis of 49 studies, Delirium affects 1 in 4 acute stroke patients. • Statistically significant risk factors of post-stroke delirium were identified. • Timely prevention and treatment require prioritizing patients with risk determinants. [ABSTRACT FROM AUTHOR]- Published
- 2024
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6. FAM3Dinhibits gluconeogenesis in high glucose environment via DUSP1/ZFP36/SIK1axis
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Huang, Bin, Luo, Yue‐Ling, Huang, Jun‐Ling, Li, Guang‐Zhi, Qiu, Shi‐Yuan, and Huang, Chun‐Chun
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Hyperglycemia is the most important factor leading to the complications of type 2 diabetes mellitus (T2DM). The primary condition for the treatment of T2DM is to change the glucose and lipid metabolism disorders in the liver and other insulin‐sensitive tissues. The current study aims to unearth the potential molecular mechanism of inhibiting liver gluconeogenesis to provide a new theoretical basis for the treatment of T2DM. High glucose (HG) induction of HepG2 cells followed by treatment with sequence‐similar family 3 member D (FAM3D). Dual specificity phosphatases 1 (DUSP1), zinc finger protein 36 (ZFP36), salt‐induced kinase 1 (SIK1), p‐SIK1, posphoenolpyruvate carboxykinase (PEPCK) and glucose‐6‐phosphatase (G6Pase) gene and protein expression level were detected by quantitative real‐time polymerase chain reaction and western blot. The PEPCK and G6Pase activities were detected by enzyme linked immunosorbent assay. Glucose production assay to determine glucose content. The RNA binding protein immunoprecipitation assay was used to detect the binding of ZFP36 to SIK1. FAM3D facilitated the expression of DUSP1 but suppressed the expression of gluconeogenesis‐related factors in an HG environment. The expression of ZFP36 was up‐regulated in an HG environment. ZFP36 could reverse the inhibition of gluconeogenesis caused by FAM3D. HG‐induced upregulation of ZFP36 was downregulated by overexpression of DUSP1. ZFP36 bound to SIK1, and downregulation of ZFP36 promoted SIK1 expression and inhibits gluconeogenesis. Our study demonstrated FAM3D inhibited gluconeogenesis through the DUSP1/ZFP36/SIK1 axis in an HG environment, which provided a new theoretical basis for exploring the pathogenesis and treatment strategy of T2DM.
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- 2023
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7. Micro-LEDs at low current densities to improve efficiency based on the considerations of carrier matching
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Zhang, Xuping, Li, Baojun, Yu, Changyuan, Zhang, Xinliang, Tang, Guang-Zhi, Lin, Wei-An, Tseng, Shen-Fu, and Ye, Zhi-Ting
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- 2022
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8. Improving Prediction of Complications Post-Proton Therapy in Lung Cancer Using Large Language Models and Meta-Analysis
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Chao, Pei-Ju, Chang, Chu-Ho, Wu, Jyun-Jie, Liu, Yen-Hsien, Shiau, Junping, Shih, Hsin-Hung, Lin, Guang-Zhi, Lee, Shen-Hao, and Lee, Tsair-Fwu
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Purpose This study enhances the efficiency of predicting complications in lung cancer patients receiving proton therapy by utilizing large language models (LLMs) and meta-analytical techniques for literature quality assessment.Materials and Methods We integrated systematic reviews with LLM evaluations, sourcing studies from Web of Science, PubMed, and Scopus, managed via EndNote X20. Inclusion and exclusion criteria ensured literature relevance. Techniques included meta-analysis, heterogeneity assessment using Cochran’s Q test and I2statistics, and subgroup analyses for different complications. Quality and bias risk were assessed using the PROBAST tool and further analyzed with models such as ChatGPT-4, Llama2-13b, and Llama3-8b. Evaluation metrics included AUC, accuracy, precision, recall, F1 score, and time efficiency (WPM).Results The meta-analysis revealed an overall effect size of 0.78 for model predictions, with high heterogeneity observed (I2= 72.88%, P< 0.001). Subgroup analysis for radiation-induced esophagitis and pneumonitis revealed predictive effect sizes of 0.79 and 0.77, respectively, with a heterogeneity index (I2) of 0%, indicating that there were no significant differences among the models in predicting these specific complications. A literature assessment using LLMs demonstrated that ChatGPT-4 achieved the highest accuracy at 90%, significantly outperforming the Llama3 and Llama2 models, which had accuracies ranging from 44% to 62%. Additionally, LLM evaluations were conducted 3229 times faster than manual assessments were, markedly enhancing both efficiency and accuracy. The risk assessment results identified nine studies as high risk, three as low risk, and one as unknown, confirming the robustness of the ChatGPT-4 across various evaluation metrics.Conclusion This study demonstrated that the integration of large language models with meta-analysis techniques can significantly increase the efficiency of literature evaluations and reduce the time required for assessments, confirming that there are no significant differences among models in predicting post proton therapy complications in lung cancer patients.
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- 2024
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9. Hypoglycemic and Hypolipidemic Effects of Malonyl Ginsenosides from American Ginseng (Panax quinquefolius L.) on Type 2 Diabetic Mice.
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Liu, Zhi, Qu, Chun-Yuan, Li, Jia-Xin, Wang, Yan-Fang, Li, Wei, Wang, Chong-Zhi, Wang, Dong-Sheng, Song, Jia, Sun, Guang-Zhi, and Yuan, Chun-Su
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- 2021
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10. Surface diffraction beamline at the SSRF
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Gu, Yue-Liang, Zheng, Xu, Zhang, Xing-Min, Zhao, Bin, Yin, Guang-Zhi, Zhu, Da-Ming, Sun, Yuan-He, Gao, Xing-Yu, and Li, Xiao-Long
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BL02U2 of the Shanghai Synchrotron Radiation Facility is a surface diffraction beamline with a photon flux of 5.5 × 1012photons/s at 10 keV and a beam size of 160 µm × 80 µm at the sample site. It is dedicated to studying surfaces (solid–vacuum, solid–gas) and interfaces (solid–solid, solid–liquid, and liquid–liquid) in nanoscience, condensed matter, and soft matter systems using various surface scattering techniques over an energy range of 4.8–28 keV with transmission and reflection modes. Moreover, BL02U2 has a high energy resolution, high angular resolution, and low beam divergence, which can provide excellent properties for X-ray diffraction experiments, such as grazing incident X-ray diffraction, X-ray reflectivity, crystal truncation rods, and liquid X-ray scattering. Diversity of in situ environments can also be provided for the samples studied. This paper describes the setup of the new beamline and its applications in various fields.
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- 2024
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11. Period-Dependent Survival Benefit of Percutaneous Microwave Ablation for Hepatocellular Carcinoma: A 12-Year Real-World, Multicentric Experience
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Yu, Jie, Cheng, Zhi-Gang, Han, Zhi-Yu, Liu, Fang-Yi, Zheng, Rong-Qin, Cheng, Wen, Wei, Qiang, Yu, Song-Yuan, Li, Qin-ying, He, Guang-zhi, Luo, Yan-chun, Yu, Xiao-Ling, and Liang, Ping
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Introduction:Although microwave ablation (MWA) is a promising technique for hepatocellular carcinoma (HCC) treatment, its 10-year efficacy is unknown. Objective:The objective of the study was to assess whether the advances in MWA for HCC translated into a real-world survival benefit. Methods:This retrospective study included 2,354 patients with Barcelona Clinic Liver Cancer (BCLC) stage 0 to B from 5 hospitals, with at least 2 years of follow-up for all the patients. Recurrence and survival were analyzed using the Kaplan-Meier method with time-period stratification. Results:A total of 5,326 HCCs (mean diameter, 2.9 cm ± 1.2) underwent 4,051 sessions of MWA with a median follow-up of 61.3 (0.6–169.5 range) months during 3 periods (2007–2010, 2011–2014, and 2015–2018). Technical success was achieved in 5,194 (97.5%) tumors with significant improvement over time, especially for >3.0-cm HCC (p< 0.001). Local tumor progression (LTP) showed no period-dependent advance, with >3.0-cm HCC and perivascular location being the risk factors for LTP. The median intrahepatic metastasis time was 27.6 (95% confidence interval [CI]: 25.2–28.8) months, with 5- and 10-year occurrence rates of 68.8% and 79.4%, respectively. The 5- and 10-year overall survivals were 63.9% and 41.1%, respectively, and BCLC stage 0, A, and all B patients showed an observable survival improvement over time (p< 0.001). The median disease-free survival time increased from 19.4 (95% CI: 16.5–22.6) months in 2007–2010 to 28.1 (95% CI: 25.9–32.3) months in 2015–2018. The improved survival for early recurrent (≤2 years) patients was period-dependent, as verified by Cox regression analyses. The major complications rate per procedure was 3.0% (122/4,051). Conclusions:These real-world data show that MWA provided an upward trend in survival for HCC patients with BCLC stage 0–B over a 12-year follow-up period. An encouraging clear survival benefit in early recurrent patients was also observed.
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- 2022
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12. Clinical significance of ribosome production factor 2 homolog in hepatocellular carcinoma
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An, Yan, Xia, Yechen, Wang, Zhengyang, Jin, Guang-Zhi, and Shang, Mingyi
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•RPF2 was highly expressed in HCC•Expression level of RPF2 was associated with prognosis and clinical pathological factors in HCC patients•RPF2 played a promoting role in HCC progression
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- 2024
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13. Improved Phase Stability and Enhanced Luminescence of Calcite Phase LuBO3:Ce3+ through Ga3+ Incorporation.
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Huang, Meng, Li, Qian-Li, Yuan, Rui, Yang, Xue-Chun, Yin, Guang-Zhi, Yang, Xin-Xin, Hu, Jian-Feng, Gao, Xing-Yu, Deng, Zheng, Wang, Lin, Zhao, Jing-Tai, and Zhang, Zhi-Jun
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- 2020
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14. A novel double-balloon catheter for percutaneous balloon pulmonary valvuloplasty under echocardiographic guidance only.
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Deng, Run-Di, Zhang, Feng-Wen, Zhao, Guang-Zhi, Wen, Bin, Wang, Shou-Zheng, Ou-Yang, Wen-Bin, Liu, Yao, Xie, Yong-Quan, and Pan, Xiang-Bin
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• Echo-guided percutaneous balloon pulmonary valvuloplasty (PBPV) avoids the use of radiation and contrast agent. • A novel double-balloon catheter is designed for echo-guided PBPV. • Better visualization of the novel catheter under echo than the traditional one. • The novel catheter is feasible and safe for echo-guided PBPV in animal experiments. Percutaneous balloon pulmonary valvuloplasty (PBPV) is the procedure of choice for uncomplicated severe or symptomatic pulmonary stenosis. Echocardiography (echo)-guided PBPV can completely avoid the use of radiation and contrast agents compared to fluoroscopy-guided PBPV. Although we have confirmed that echo-guided PBPV is feasible in humans, the poor visibility of the traditional catheter under echo greatly limits the promotion of this new technology. We produced a novel double-balloon catheter to make the catheter easy to be detected by echo through adding a guiding balloon at the distal end of the catheter. Echo-guided PBPV was performed on thirty healthy swine using either a novel catheter or a traditional catheter to evaluate the feasibility and safety of the novel double-balloon catheter. The feasibility was evaluated by the success rate of balloon inflation at the pulmonary valve annulus and the operating time. The safety was evaluated by the frequency of balloon slippage and the incidence of complications. There were no significant between-group differences in terms of weight and the ratio of balloon diameter to pulmonary annulus diameter. The success rate was 93.3% and 60% in the novel and traditional groups, respectively. The novel group had significantly (p < 0.05) lower mean procedure time (6.33 ± 6.86 min vs 24.8 ± 9.79 min) and lower frequency of balloon slippage (0.07 ± 0.26 vs 0.53 ± 0.52), arrhythmia (0.07 ± 0.26 vs 0.47 ± 0.52), and tricuspid regurgitation (6.7% vs 40%) than the traditional group. No myocardial hematoma or pericardial tamponade occurred in the novel catheter group. Although further studies and improvements are required, the study results indicate that the novel double-balloon catheter for echo-guided PBPV is feasible and safe. [ABSTRACT FROM AUTHOR]
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- 2020
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15. ACSL4 is a predictive biomarker of sorafenib sensitivity in hepatocellular carcinoma
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Feng, Ji, Lu, Pei-zhi, Zhu, Guang-zhi, Hooi, Shing Chung, Wu, Yong, Huang, Xiao-wei, Dai, Hui-qi, Chen, Pan-hong, Li, Zhong-jie, Su, Wen-jing, Han, Chuang-ye, Ye, Xin-ping, Peng, Tao, Zhou, Jing, and Lu, Guo-dong
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Sorafenib is the first-line treatment of advanced hepatocellular carcinoma (HCC). However, there is a lack of validated biomarkers to predict sorafenib sensitivity. In this study we investigated the role of ACSL4, a positive-activating enzyme of ferroptosis, in sorafenib-induced cell death and HCC patient outcome. We showed that ACSL4 protein expression was negatively associated with IC50values of sorafenib in a panel of HCC cell lines (R?=?-0.952, P?0.001). Knockdown of ACSL4 expression by specific siRNA/sgRNA significantly attenuated sorafenib-induced lipid peroxidation and ferroptosis in Huh7 cells, and also rescued sorafenib-induced inhibition of xenograft tumor growth in vivo. We selected 29 HCC patients with surgery as primary treatment and sorafenib as postoperative adjunct therapy from a hospital-based cohort. A high proportion (66.7%) of HCC patients who had complete or partial responses to sorafenib treatment (according to the revised RECIST guideline) had higher ACSL4 expression in the pretreated HCC tissues, compared with those who had stable or progressed tumor growth (23.5%, P?=?0.029). Since ACSL4 expression was independent of sorafenib treatment, it could serve as a useful predictive biomarker. Taken together, this study demonstrates that ACSL4 is essential for sorafenib-induced ferroptosis and useful for predicting sorafenib sensitivity in HCC. This study may have important translational impacts in precise treatment of HCC.
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- 2021
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16. Improved Phase Stability and Enhanced Luminescence of Calcite Phase LuBO3:Ce3+through Ga3+Incorporation
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Huang, Meng, Li, Qian-Li, Yuan, Rui, Yang, Xue-Chun, Yin, Guang-Zhi, Yang, Xin-Xin, Hu, Jian-Feng, Gao, Xing-Yu, Deng, Zheng, Wang, Lin, Zhao, Jing-Tai, and Zhang, Zhi-Jun
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The application of LuBO3:Ce3+(LBO:Ce) crystal as an excellent scintillation material has been limited due to its poor phase stability at high temperature or high pressure, so improving the phase stability is essential for promoting its development. Ga stabilized LuBO3:Ce3+(LGBO:Ce) is synthesized by solid-state reaction at 1200 °C. Powder X-ray diffraction patterns and Raman spectra at ambient pressure show that all the samples are pure calcite phase. In situ high-pressure synchrotron radiation XRD patterns illustrate that calcite phase LGBO:Ce exhibits more excellent phase stability than that of LBO:Ce under high pressure due to the superior compressibility of the [GaO6] octahedral unit. The optical band gap of LGBO decreases from 5.58 to 4.64 eV after introducing 10% Ga, which leads to the decreased nonradiative transition and about double luminescence intensity as expected. More interestingly, the charge transition from O2–to Ce4+is observed at about 290 nm in the absorption spectra. The X-ray photoelectron spectroscopy spectra indicate the ratio of Ce4+/Ce3+increases with increasing concentration of Ga3+, which can be attributed to the variation of energy separation between the 4f ground state of Ce3+and the Fermi energy level position. In contrast to the enhancement of PL intensity, the integrated X-ray excited luminescence intensity decreases after Ga3+incorporation attributing to the result of both decreased effective atomic number and ionization energy between 5d1level and conduction band. The thermal luminescence spectra show that after the incorporation of Ga3+the oxygen vacancy and intrinsic defects in LBO remain unchanged but that the concentration of oxygen vacancy significantly reduces. The mechanism of Ga3+incorporation on phase stability and luminescence properties of
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- 2020
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17. Epidemiology of traumatic spinal cord injury in Tianjin, China: An 18-year retrospective study of 735 cases.
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Li, Hai-Liang, Xu, Hong, Li, Yu-Lin, Sun, Shi-Wei, Song, Wen-Ye, Wu, Qiang, Ai, Jie, Sun, Jing-Cheng, Ning, Guang-Zhi, and Feng, Shi-Qing
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- 2019
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18. Ultrasmall Abundant Metal-Based Clusters as Oxygen-Evolving Catalysts.
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Han, Xin-Bao, Tang, Xing-Yan, Lin, Yue, Gracia-Espino, Eduardo, Liu, San-Gui, Liang, Hai-Wei, Hu, Guang-Zhi, Zhao, Xin-Jing, Liao, Hong-Gang, Tan, Yuan-Zhi, Wagberg, Thomas, Xie, Su-Yuan, and Zheng, Lan-Sun
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- 2019
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19. Crystal structure of 3,5-bis((E)-4-methoxy-2-(trifluoromethyl)benzylidene)-1-methylpiperidin-4-one, C24H21F6NO3
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Zhou, Xia, Sun, Zhong-Hao, Shan, Guang-Zhi, and Meng, Qing-Guo
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C24H21F6NO3, monoclinic, P21/c(no. 14), a= 16.0076(10) Å, b= 7.7424(4) Å, c= 17.3259(11) Å, β= 96.161(5)°, V= 2134.9(2) Å3, Z= 4, Rgt(F) = 0.0563, wRref(F2) = 0.1517, T= 100.0(1) K.
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- 2021
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20. Crystal structure of (E)-7-fluoro-2-(4-methoxy-2-(trifluoromethyl)benzylidene)-3,4-dihydronaphthalen-1(2H)-one, C19H14F4O2
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Meng, Qing-Guo, Zhao, Sheng-Nan, Sun, Zhong-Hao, Shan, Guang-Zhi, and Meng, Qing-Guo
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C19H14F4O2, monoclinic, P21/c(no. 14), a= 11.8614(10) Å, b= 7.9148(6) Å, c= 16.7999(16) Å, β= 99.150(9)°, V= 1557.1(2) Å3, Z= 4, Rgt(F) = 0.0446, wRref(F2) = 0.1150, T= 100 K.
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- 2021
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21. New biphenyls from Garcinia lancilimba.
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Gao, Xue-Mei, Cui, Di, Wang, Shan-Shan, Huang, Wen-Zhong, Li, Gan-Peng, Zeng, Guang-Zhi, Jiang, Meng-Yuan, and Jiang, Zhi-Yong
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Graphical abstract Highlights • Three new biphenyls were isolated from the stems of the plant Garcinia lancilimba. • The structures of these new compounds were elucidated by spectroscopic methods. • Compound 1 – 3 showed promising anti-rotavirus activity effects for which TI values are above 10. Abstract Garcilancibiphenyls A–C (1–3), three new biphenyls, were isolated from the stems of the plant Garcinia lancilimba , which belongs to the family Clusiaceae. Structures of the new compounds feature the acetoxyprenyl group on a benzene ring, and were elucidated by spectroscopic evidence. These compounds showed promising anti-rotavirus activity effects with TI values above 10. [ABSTRACT FROM AUTHOR]
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- 2018
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22. The association of rs11190870 near LBX1 with the susceptibility and severity of AIS, a meta-analysis.
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Li, Yu-Lin, Gao, Shi-Jie, Xu, Hong, Liu, Yang, Li, Hai-Liang, Chen, Xing-Yu, Ning, Guang-Zhi, and Feng, Shi-Qing
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Background: Adolescent idiopathic scoliosis (AIS) is the most common structural deformity of the spine. Genetics constitute largely to AIS, and the rs11190870 polymorphism has the potential for use in public health and clinical settings as a predictor of AIS risk. The aim of the present meta-analysis was to provide exhaustive evidence to evaluate the association of rs11190870 with the susceptibility and severity of adolescent idiopathic scoliosis (AIS) in multiple ethnic groups and different genders.Materials and Methods: The professional databases, including PubMed, Embase, Social Sciences Citation Index, CINAHL, and International Bibliography of the Social Sciences, were searched from 1966 to October 2015. No language restriction was applied. Reference lists of all the selected articles were hand-searched for any additional studies. Three authors independently extracted data from all eligible studies. The data were analyzed by meta-analysis using fixed-effects or random-effects models with mean differences and risk ratios for continuous and dichotomous variables, respectively.Results: Eight studies were included, and the pooled analysis suggested that the T genotype of SNP rs11190870 leads to a higher risk of AIS in multiple ethnic groups regardless of gender (Total:OR, 1.66, 95% CI 1.53, 1.79; I2 = 37.3%, P = 0.000, Female: OR, 1.62, 95% CI 1.50, 1.73; I2 = 26.7%, P = 0.000, Male: OR, 1.79, 95% CI 1.38, 2.20; I2 = 0.00%, P = 0.000). Additionally, the TT and TC genotype had a larger Cobb angle than those with the CC genotype in the overall and female Asian populations.Conclusion: A significant association of rs11190870 with AIS was observed in multiple ethnic groups regardless of gender. Additionally, a significant association was found between rs11190870 and curve severity in the overall and female Asian populations. Due to the limited data and clinical heterogeneity, further studies with large sample sizes are required. [ABSTRACT FROM AUTHOR]- Published
- 2018
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23. Epidemiology of traumatic spinal cord injury in Tianjin, China: An 18-year retrospective study of 735 cases
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Li, Hai-Liang, Xu, Hong, Li, Yu-Lin, Sun, Shi-Wei, Song, Wen-Ye, Wu, Qiang, Ai, Jie, Sun, Jing-Cheng, Ning, Guang-Zhi, and Feng, Shi-Qing
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Study Design:Hospital-based retrospective studyObjectives:To evaluate the pathogenetic features of traumatic spinal cord injury (TSCI) during 1999–2016 according to changed injury etiology with time, explore different characteristics of patients suffered a TSCI during 1999–2007 and 2008–2016 in Tianjin, China.Setting:Tianjin Medical University General HospitalMethods:In this study, the medical records of TSCI patients were obtained from Tianjin Medical University General Hospital (TMUGH) from 1st January 1999 to 31th December 2016. Variables were recorded, including age, gender occupation, etiology, the level of injury, America Spinal Injury Association (ASIA) impairment scale, the severity, concomitant injuries, death and its cause. To explore the differences in characteristics by etiology and by two periods, related statistical methods were used to calculate the correlation of some variables. Differences in etiology of TSCI during 1999–2016 were evaluated and differences in epidemiological characteristics were separately compared and analyzed between the 1999–2007 period and the 2008–2016 period.Results:From 1999–2016, 831 TSCI cases were identified and 96 cases were excluded from analyses. The male-to-female ratio was 2.9:1 and the mean age was 49.7±15.2 years, which changed significantly between 1999–2007 (45.1±14.2) and 2008–2016 (51.6±15.2). Traffic accidents (45.8%) were the leading cause of TSCI during the 1999–2007 period, followed by low falls (30.7%). However, the opposite result was observed during the 2008–2016 period. Significant difference was observed compared with thoracic, lumbar and sacral levels, cervical level was the most commonly affected levels and the percentage decreased to a certain degree between 1999–2007 and 2008–2016 (from 84.4% to 68.9%). The proportions of ASIA grades A, B, C, and D were 20.5%, 10.3%, 23.3%, and 45.9%, respectively. The percentage of complete tetraplegia decreased from 22.9% in 1999–2007 to 13.2% in 2008–2016, and the percentage of incomplete paraplegia increased from 9.7% to 27.9%.Conclusion:According to the changes in the epidemiological characteristics of TSCI, relevant health service, laws and regulations, preventative strategies should be readjusted to follow up the changing situation and epidemiological characteristics of TSCI.
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- 2019
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24. Ultrasmall Abundant Metal-Based Clusters as Oxygen-Evolving Catalysts
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Han, Xin-Bao, Tang, Xing-Yan, Lin, Yue, Gracia-Espino, Eduardo, Liu, San-Gui, Liang, Hai-Wei, Hu, Guang-Zhi, Zhao, Xin-Jing, Liao, Hong-Gang, Tan, Yuan-Zhi, Wagberg, Thomas, Xie, Su-Yuan, and Zheng, Lan-Sun
- Abstract
The oxygen evolution reaction is a crucial step in water electrolysis to develop clean and renewable energy. Although noble metal-based catalysts have demonstrated high activity for the oxygen evolution reaction, their application is limited by their high cost and low availability. Here we report the use of a molecule-to-cluster strategy for preparing ultrasmall trimetallic clusters by using the polyoxometalate molecule as a precursor. Ultrafine (0.8 nm) transition-metal clusters with controllable chemical composition are obtained. The transition-metal clusters enable highly efficient oxygen evolution through water electrolysis in alkaline media, manifested by an overpotential of 192 mV at 10 mA cm–2, a low Tafel slope of 36 mV dec–1, and long-term stability for 30 h of electrolysis. We note, however, that besides the excellent performance as an oxygen evolution catalyst, our molecule-to-cluster strategy provides a means to achieve well-defined transition-metal clusters in the subnanometer regime, which potentially can have an impact on several other applications.
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- 2019
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25. Influence of cutting tool geometrical parameters on tool wear in high-speed milling of Inconel 718 curved surface
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Ma, Jian-wei, Jia, Zhen-yuan, He, Guang-zhi, Liu, Zhen, Zhao, Xiao-xuan, and Qin, Feng-ze
- Abstract
High-speed machining provides an efficient approach for machining Inconel 718 with high quality and high efficiency. For high-speed milling of Inconel 718 curved surface, the geometrical characteristics are changing continuously leading to a sharp fluctuation of cutting force, which will aggravate the tool wear. As the wear mechanism of coated cutting tool is seriously affected by the cutting tool geometrical parameters, suitable geometrical parameters of cutting tool should be selected to avoid the cutting tool from being worn out very quickly. In this study, the influence of cutting tool geometrical parameters on tool wear in high-speed milling of Inconel 718 curved surface is investigated with coated cutting tool, and the cutting force in milling process is also analyzed. The results show that the cutting force variation can manifest the tool wear degree, and the failure type of coated cutting tool in plane milling and curved surface milling after the same cutting length is different. Furthermore, the cutting tool geometrical parameters seriously affect the tool wear and the tool life in high-speed milling of Inconel 718 curved surface. Concretely, the small rake angle has greater strength and has superiority, the relief angle increasing can enhance the tool life, and the tool life is decreased with the increasing of helix angle for the cutting tool, whose helix angle is larger than 30°. This study provides a theoretical basis for cutting tool wear mechanism and cutting tool geometrical parameter selection in high-speed milling of Inconel 718 curved surface, so as to guarantee the machining efficiency in high-speed milling of Inconel 718 curved surface.
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- 2019
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26. Oncofetal HLF transactivates c-Jun to promote hepatocellular carcinoma development and sorafenib resistance
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Xiang, Dai-Min, Sun, Wen, Zhou, Tengfei, Zhang, Cheng, Cheng, Zhuo, Li, Shi-Chao, Jiang, Weiqi, Wang, Ruoyu, Fu, Gongbo, Cui, Xiuliang, Hou, Guojun, Jin, Guang-Zhi, Li, Hengyu, Hou, Caiying, Liu, Hui, Wang, Hongyang, and Ding, Jin
- Abstract
Background and aimsThe unique expression pattern makes oncofetal proteins ideal diagnostic biomarkers and therapeutic targets in cancer. However, few oncofetal proteins have been identified and entered clinical practice.MethodsFetal liver, adult liver and hepatocellular carcinoma (HCC) tissues were employed to assess the expression of hepatic leukaemia factor (HLF). The impact of HLF on HCC onset and progression was investigated both in vivo and in vitro. The association between HLF and patient prognosis was determined in patient cohorts. The correlation between HLF expression and sorafenib benefits in HCC was further evaluated in patient cohorts and patient-derived xenografts (PDXs).ResultsHLF is a novel oncofetal protein which is reactivated in HCC by SOX2 and OCT4. Functional studies revealed that HLF transactivates c-Jun to promote tumour initiating cell (TIC) generation and enhances TIC-like properties of hepatoma cells, thus driving HCC initiation and progression. Consistently, our clinical investigations elucidated the association between HLF and patient prognosis and unravelled the close correlation between HLF levels and c-Jun expression in patient HCCs. Importantly, HLF/c-Jun axis determines the responses of hepatoma cells to sorafenib treatment, and interference of HLF abrogated c-Jun activation and enhanced sorafenib response. Analysis of patient cohorts and PDXs further suggests that HLF/c-Jun axis might serve as a biomarker for sorafenib benefits in HCC patients.ConclusionsOur findings uncovered HLF as a novel oncofetal protein and revealed the crucial role of the HLF/c-Jun axis in HCC development and sorafenib response, rendering HLF as an optimal target for the prevention and intervention of HCC.
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- 2019
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27. Nanosized sustained-release drug depots fabricated using modified tri-axial electrospinning.
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Yang, Guang-Zhi, Li, Jiao-Jiao, Yu, Deng-Guang, He, Mei-Feng, Yang, Jun-He, and Williams, Gareth R.
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FERULIC acid ,NANOSTRUCTURES ,ELECTROSPINNING ,CELLULOSE acetate ,X-ray diffraction - Abstract
Nanoscale drug depots, comprising a drug reservoir surrounded by a carrier membrane, are much sought after in contemporary pharmaceutical research. Using cellulose acetate (CA) as a filament-forming polymeric matrix and ferulic acid (FA) as a model drug, nanoscale drug depots in the form of core-shell fibers were designed and fabricated using a modified tri-axial electrospinning process. This employed a solvent mixture as the outer working fluid, as a result of which a robust and continuous preparation process could be achieved. The fiber-based depots had a linear morphology, smooth surfaces, and an average diameter of 0.62 ± 0.07 μm. Electron microscopy data showed them to have clear core-shell structures, with the FA encapsulated inside a CA shell. X-ray diffraction and IR spectroscopy results verified that FA was present in the crystalline physical form. In vitro dissolution tests revealed that the fibers were able to provide close to zero-order release over 36 h, with no initial burst release and minimal tailing-off. The release properties of the depot systems were much improved over monolithic CA/FA fibers, which exhibited a significant burst release and also considerable tailing-off at the end of the release experiment. Here we thus demonstrate the concept of using modified tri-axial electrospinning to design and develop new types of heterogeneous nanoscale biomaterials. Statement of Significance Nanoscale drug depots with a drug reservoir surrounded by a carrier are highly attractive in biomedicine. A cellulose acetate based drug depot was investigated in detail, starting with the design of the nanostructure, and moving through its fabrication using a modified tri-axial electrospinning process and a series of characterizations. The core-shell fiber-based drug depots can provide a more sustained release profile with no initial burst effect and less tailing-off than equivalent monolithic drug-loaded fibers. The drug release mechanisms are also distinct in the two systems. This proof-of-concept work can be further expanded to conceive a series of new structural biomaterials with improved or new functional performance. [ABSTRACT FROM AUTHOR]
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- 2017
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28. Instantaneous cutting-amount planning for machining deformation homogenization based on position-dependent rigidity of thin-walled surface parts
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Ma, Jian-wei, He, Guang-zhi, Liu, Zhen, Qin, Feng-ze, Chen, Si-yu, and Zhao, Xiao-xuan
- Abstract
•Cutting-amount planning for machining deformation homogenization is proposed.•Instantaneous cutting-amount is planned according to position-dependent rigidity.•Machining with planned cutting-amount decreases deformation error variance.•Deformation homogenization is achieved for thin-walled surface machining.•Machining deformation homogenization makes deformation compensation easily.
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- 2018
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29. Impact of and adaptation strategies for sea-level rise on Yangtze River Delta
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Wang, Qiu-Shun, Pan, Cun-Hong, and Zhang, Guang-Zhi
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The Yangtze River Delta characterized by a dense population and a rapidly developing economy is highly vulnerable to sea-level rise. The data from the China Oceanic Information Network and the Zhejiang Provincial Hydrology Bureau are used to analyze sea-level rise. The rate of sea-level rise in the delta was 2.4 mm per year in 1981–2015. The annual sea-level at Daishan, Dinghai, and Dongtou stations in the south wing of the delta were 4.3, 3.1, and 5 mm per year respectively over the same period. The 10-year averaged results at each station also indicate a perceptible trend of sea-level rise. Sea-level rise is contributed to a larger proportion of intensified erosion, ranging from 3% to 14% in the delta. Meanwhile, the 100-year return period of tidal level has decreased to the 50-year rank at Dongtou and Dinghai stations. Moreover, the arrival time of tidal bores at Yanguan is 4 min earlier under sea-level rise of 0.145 m than that of 0 m. The height of tidal bores and the velocities at the surface and bottom layers have an increase under sea-level rise. The maximum increases of high and low tide levels are 0.122 m and 0.016 m while the maximum increases of the velocities at the surface and bottom layers are 0.07 m s−1and 0.05 m s−1, respectively. Sea-level rise will bring about the damage of seawall, thus the design standard of constructing seawalls should adopt a higher level to minimize the associated risks in the Yangtze River Delta and its south wing.
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- 2018
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30. Image-guidedcryoablation in unresectable or recurrent advanced colorectal cancer: a retrospective study
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Wang, Guang-Zhi, He, Xin-Hong, Wang, Ying, Xu, Li-Chao, Huang, Hao-Zhe, Li, Guo-Dong, Wang, Yao-Hui, and Li, Wen-Tao
- Abstract
Purpose:The present study retrospectively analyzed thesafety and efficacy of computed tomography (CT)-guided cryoablationin the treatment ofunresectable or recurrent advanced colorectal cancer, which did not respond well to or experienced progression with radiotherapy or chemotherapy.
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- 2018
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31. Cervical disc arthroplasty for symptomatic cervical disc disease: Traditional and Bayesian meta-analysis with trial sequential analysis.
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Kan, Shun-Li, Yuan, Zhi-Fang, Ning, Guang-Zhi, Liu, Fei-Fei, Sun, Jing-Cheng, and Feng, Shi-Qing
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CERVICAL vertebrae ,ARTHROPLASTY ,DISCECTOMY ,INTERVERTEBRAL disk displacement ,RANGE of motion of joints ,SPINE diseases ,META-analysis ,PROBABILITY theory ,SPINAL fusion ,SYSTEMATIC reviews ,TREATMENT effectiveness ,SURGERY - Abstract
Objective: Cervical disc arthroplasty (CDA) has been designed as a substitute for anterior cervical discectomy and fusion (ACDF) in the treatment of symptomatic cervical disc disease (CDD). Several researchers have compared CDA with ACDF for the treatment of symptomatic CDD; however, the findings of these studies are inconclusive. Using recently published evidence, this meta-analysis was conducted to further verify the benefits and harms of using CDA for treatment of symptomatic CDD.Methods: Relevant trials were identified by searching the PubMed, EMBASE, and Cochrane Library databases. Outcomes were reported as odds ratio or standardized mean difference. Both traditional frequentist and Bayesian approaches were used to synthesize evidence within random-effects models. Trial sequential analysis (TSA) was applied to test the robustness of our findings and obtain more conservative estimates.Results: Nineteen trials were included. The findings of this meta-analysis demonstrated better overall, neck disability index (NDI), and neurological success; lower NDI and neck and arm pain scores; higher 36-Item Short Form Health Survey (SF-36) Physical Component Summary (PCS) and Mental Component Summary (MCS) scores; more patient satisfaction; greater range of motion at the operative level; and fewer secondary surgical procedures (all P < 0.05) in the CDA group compared with the ACDF group. CDA was not significantly different from ACDF in the rate of adverse events (P > 0.05). TSA of overall success suggested that the cumulative z-curve crossed both the conventional boundary and the trial sequential monitoring boundary for benefit, indicating sufficient and conclusive evidence had been ascertained.Conclusions: For treating symptomatic CDD, CDA was superior to ACDF in terms of overall, NDI, and neurological success; NDI and neck and arm pain scores; SF-36 PCS and MCS scores; patient satisfaction; ROM at the operative level; and secondary surgical procedures rate. Additionally, there was no significant difference between CDA and ACDF in the rate of adverse events. However, as the CDA procedure is a relatively newer operative technique, long-term results and evaluation are necessary before CDA is routinely used in clinical practice. [ABSTRACT FROM AUTHOR]- Published
- 2016
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32. Combination Therapies in the Management of Large (≥ 5 cm) Hepatocellular Carcinoma: Microwave Ablation Immediately Followed by Transarterial Chemoembolization.
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Si, Zeng-Mei, Wang, Guang-Zhi, Qian, Sheng, Qu, Xu-Dong, Yan, Zhi-Ping, Liu, Rong, and Wang, Jian-Hua
- Abstract
Purpose: To evaluate the safety and efficacy of microwave (MW) ablation combined with transarterial chemoembolization in a single stage for the treatment of large (≥ 5 cm) hepatocellular carcinoma (HCC).Materials and Methods: From March 2013 to January 2015, 66 patients (54 men and 12 women; mean age, 54 y; range, 29-83 y) with 72 large HCC lesions were included in this study. Eighteen (27.3%) had Barcelona Clinic Liver Cancer class B disease, and 48 (72.7%) had class C disease. Seventy-nine percent of patients (n = 52) had hepatitis B virus infection. The average tumor size was 9.0 cm ± 3.9, ranging from 5 to 19 cm. MW ablation was performed under ultrasound guidance, immediately followed by chemoembolization. Local tumor response, progression-free survival (PFS), and overall survival (OS) were assessed.Results: The technique was successfully performed in all patients. Complete response (CR) was achieved in 28 cases (42.4%), and partial response (PR) was achieved in 34 cases (51.5%) at 1 month after the procedure. The objective response rate (ie, CR plus PR) was 93.9%. Median PFS and OS times were 9 months and 21 months, respectively. The 6-, 12-, and 18-month OS rates were 93.9%, 85.3%, and 66.6%, respectively. Hemorrhage was detected in three patients and arteriovenous fistula in two patients after MW ablation; all were promptly treated with embolization. There were no liver abscesses, bile-duct injuries, or other major procedure-related complications.Conclusions: MW ablation immediately followed by chemoembolization is safe and effective in the treatment of large HCC lesions. [ABSTRACT FROM AUTHOR]- Published
- 2016
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33. Remarkable Impact of Acidic Ginsenosides and Organic Acids on Ginsenoside Transformation from Fresh Ginseng to Red Ginseng.
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Zhi Liu, Juan Xia, Chong-Zhi Wang, Jin-Qiu Zhang, Chang-Chun Ruan, Guang-Zhi Sun, and Chun-Su Yuan
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- 2016
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34. Epidemiological features of traumatic spinal cord injury in Chongqing, China.
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Ning, Guang-Zhi, Mu, Zhi-Ping, Shangguan, Lei, Tang, Yu, Li, Chang-Qing, Zhang, Zheng-Feng, and Zhou, Yue
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- 2016
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35. A novel M2e-multiple antigenic peptide providing heterologous protection in mice.
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Feng Wen, Ji-Hong Ma, Hai Yu, Fu-Ru Yang, Meng Huang, Yan-Jun Zhou, Ze-Jun Li, Xiu-Hui Wang, Guo-Xin Li, Yi-Feng Jiang, Wu Tong, and Guang-Zhi Tong
- Subjects
INFLUENZA A virus, H1N1 subtype ,VIRUS inactivation ,VIRAL vaccines ,T helper cells ,MOUSE diseases ,DRUG development ,THERAPEUTICS - Abstract
Swine influenza viruses (SwIVs) cause considerable morbidity and mortality in domestic pigs, resulting in a significant economic burden. Moreover, pigs have been considered to be a possible mixing vessel in which novel strains loom. Here, we developed and evaluated a novel M2e-multiple antigenic peptide (M2e-MAP) as a supplemental antigen for inactivated H3N2 vaccine to provide cross-protection against two main subtypes of SwIVs, H1N1 and H3N2. The novel tetra-branched MAP was constructed by fusing four copies of M2e to one copy of foreign T helper cell epitopes. A high-yield reassortant H3N2 virus was generated by plasmid based reverse genetics. The efficacy of the novel H3N2 inactivated vaccines with or without M2e-MAP supplementation was evaluated in a mouse model. M2e-MAP conjugated vaccine induced strong antibody responses in mice. Complete protection against the heterologous swine H1N1 virus was observed in mice vaccinated with M2e-MAP combined vaccine. Moreover, this novel peptide confers protection against lethal challenge of A/Puerto Rico/8/34 (H1N1). Taken together, our results suggest the combined immunization of reassortant inactivated H3N2 vaccine and the novel M2e-MAP provided cross-protection against swine and human viruses and may serve as a promising approach for influenza vaccine development. [ABSTRACT FROM AUTHOR]
- Published
- 2016
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36. Design of Wireless Automatic Fire Alarm System.
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Dong, Wen-hui, Wang, Li, Yu, Guang-zhi, and Mei, Zhi-bin
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FIRE alarms ,WIRELESS communications ,FIREFIGHTING ,ELECTRIC power consumption ,FIRE detectors - Abstract
To meet the application requirements of wireless automatic fire alarm system, based on the analysis of the applicable sites of wireless fire alarm system and the characteristics of communication service, this paper designs a dedicated wireless communication protocol for fire detection and alarm, and develops a complete set of wireless automatic fire alarm system, to achieve rapid fire detection and alarm and state supervision of fire-fighting facilities with low power consumption. [ABSTRACT FROM AUTHOR]
- Published
- 2016
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37. In vitroantioxidant activity, total phenolic and flavonoid contents of ethanol extract of stem and leaf of Grewia carpinifolia
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Adebiyi, Olamide E., Olayemi, Funsho O., Ning-Hua, Tan, and Guang-Zhi, Zeng
- Abstract
Free radicals are reactive molecules involved in many physiological processes and have been associated with many diseases, such as cancer, arthritis and liver injury. As a result, there is need to explore substances with free radical scavenging and or antioxidant activity. The present study was designed to evaluate the free radical scavenging activity of ethanol extract of leaf and stem of Grewia carpinifoliausing various in vitromodels. Ascorbic acid was used as the reference in the study. 1,1-Diphenyl-2-picryl hydroxyl (DPPH) quenching assay, 2,2′-azinobis-3-ethylbenzothiozoline-6-sulfonic acid (ABTS) cation decolorization test, ferric reducing antioxidant power (FRAP) Assay systems were selected for the present experiment. The ability of the extracts to inhibit lipid oxidation was measured using Thiobarbituric Acid Reactive Substances (TBARS) assay. The extracts were used at 0.2, 0.4, 0.6, 0.8 and 1mg/ml concentrations and radical scavenging activity was determined in terms of inhibition percentage. The IC50(concentration required for 50% inhibition) was also calculated for each radical. The study revealed that Grewia carpinifoliahas a high radical scavenging activity in the various radical systems. The total phenolic content was 19.08±1.21mg gallic acid equivalent (GAE)/g extract and 14.85±1.09mg GAE/g extract for the leaf and stem respectively while the flavonoid content was 9.00±0.13 and 13.22±1.53mg quercetin/g extract. The antioxidant activity of Grewia carpinifoliaextract may be due to the high level of flavonoids and phenols in the plant.
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- 2017
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38. Cytotoxic flavonoids from the young twigs and leaves of Caesalpinia bonduc (Linn) Roxb.
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Ogunlana, Olubanke Olujoke, Wen Jun He, Jun Ting Fan, Guang Zhi Zeng, Chang Jiu Ji, Yu Quing Zheng, Olagunju, Joseph Abayomi, Akindahunsi, Afolabi Akintunde, and Ning Hua Tan
- Abstract
The extraction, fractionation and recognition of flavonoids from the ethanolic extract of young twigs and leaves of C. bonduc were carried out. In addition, cytotoxic study of the flavonoids on two cancer cell lines, BGC-823 and HeLa was carried our using sulphorhodamine B assay. Seven flavonoids, six of which are being reported for the first time in this plant, were isolated. Their structures were identified by MS and NMR spectroscopic methods. Petroleum ether, ethyl acetate and water fractions exhibited moderate cytotoxic activity against HeLa cells. Five compounds showed cytotoxic activity against HeLa cell in comparison with Paclitaxel, while only one compound showed a good degree of cytotoxic activity against BGC-823 cell in comparison to Paclitaxel. The results obtained showed a structure - activity relationship. [ABSTRACT FROM AUTHOR]
- Published
- 2015
39. Diarylheptanoids from lesser galangal suppress human colon cancer cell growth through modulating Wnt/β-catenin pathway.
- Author
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Dong, Guang-zhi, Lee, So Yoon, Zhao, Hui-Yuan, Lee, Yu-ih, Jeong, Ji Hye, Jeon, Raok, Lee, Hwa Jin, and Ryu, Jae-Ha
- Abstract
The Wnt/β-catenin pathway plays a central role in cell growth and differentiation but abnormal activation causes colorectal carcinogenesis. Inhibiting the Wnt/β-catenin pathway can be a good strategy for chemoprevention and treatment of colorectal cancer. While screening for Wnt/β-catenin pathway inhibitors from food materials, we found that (E)-7-(4-hydroxy-3-methoxyphenyl)-1-phenylhept-4-en-3-one (compound 1 ), among six diarylheptanoids from lesser galangal ( Alpinia officinarum ), most potently suppressed Wnt3a-induced β-catenin/T-cell factor activity. Moreover, compound 1 suppressed proliferation of colon cancer cells by inhibiting β-catenin translocation to the nucleus by disrupting the β-catenin/galectin-3 complex. Furthermore, a structure–activity realtionship study implicated that the enone group in the linker is critical and the hydroxy substituent on the aromatic ring is generally preferred for activity. Our findings suggest that diarylheptanoid from lesser galangal exerts anti-colon cancer activity by down regulating the Wnt/β-catenin pathway. Bioactive diarylheptanoids and the basic understanding of their structure–activity relationship could be utilized to develop potential candidates for β-catenin-targeted cancer treatment. [ABSTRACT FROM AUTHOR]
- Published
- 2015
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40. Epidemiological features of traumatic spinal cord injury in Chongqing, China
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Ning, Guang-Zhi, Mu, Zhi-Ping, Shangguan, Lei, Tang, Yu, Li, Chang-Qing, Zhang, Zheng-Feng, and Zhou, Yue
- Abstract
Objective: To describe the epidemiological characteristics and trends of traumatic spinal cord injury in Chongqing, China.Study design: Hospital-based retrospective research.Setting: Xinqiao Hospital, Chongqing.Methods: We reviewed medical records of 554 patients with traumatic spinal cord injury (TSCI) admitted to Xinqiao Hospital from 2009 to 2013. Variables included gender, age, marital status, etiology, occupation, time of injury, level of injury, and severity of injury, the length of hospital stay, and treatment.Results: The mean age of patients with TSCI was 45.6 ± 13.8 years, and the male/female ratio was 4.33:1. 94.2% (522 patients) of all patients with TSCI were married. Falls, comprising low falls and high falls (10.8% and 50.9%, respectively), were the leading reason for a hospital visit. And the second reason was MVCs (21.8%). The most common injury site was the cervical spinal cord, accounting for nearly more than 54%. The length of hospital stay ranged between 1 and 219 days (mean: 28.3 days). The proportions of complete tetraplegia, incomplete tetraplegia, complete paraplegia and incomplete paraplegia were 17.1%, 37.8%, 22.2%, and 22.9%, respectively.Conclusion: The result revealed that the proportion of males was higher, as well as falls and MVCs were the first two main reasons, with older mean age of patients with TSCI than other countries. The occupations with highest risk for TSCI were peasants and laborers. All of these results prompted that preventive methods should be based on the characteristics of different type of patients with TSCI.
- Published
- 2016
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41. No association of AQP4polymorphisms with neuromyelitis optica and multiple sclerosis
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Yang, Ting-Ting, He, Yang, Xiang, Ya-Juan, Ao, Dong-Hui, Wang, Yang-Yang, Zhang, Qi, He, Xiang-Jun, Zhong, Shan-Shan, Wu, Jian, and Liu, Guang-Zhi
- Abstract
Multiple sclerosis (MS) and neuromyelitis optica (NMO) are inflammatory demyelinating disorders of the central nervous system (CNS). Various genetic and environmental factors have been identified to contribute to etiology of MS and NMO. Aquaporin 4 (AQP4), is the most abundant water channel in CNS. AQP4is expressed in astrocytes of the brain, spinal cord, optic nerve and supportive cells in sensory organs. In contrast to MS, immunoreactivity of AQP4is abolished in NMO lesions. However, conflicting results have been reported regarding the association between AQP4polymorphisms and demyelinating disorders. Considering the ethnic differences of genetic variations, replications in other cohorts are required. In this study, single nucleotide polymorphisms (SNPs) of AQP4gene in patients with NMO/neuromyelitis optica spectrum disorders (NMOSD), and MS in the Northern Han Chinese population were examined. Six selected AQP4SNPs were genotyped by high-resolution melting (HRM) method. Compared with healthy control (HC), there was no significant difference of AQP4allele and genotype frequency in MS or NMO/NMOSD group. This study showed no significant association of common AQP4SNPs with MS or NMO/NMOSD, strongly suggesting that polymorphisms of AQP4gene are unlikely to confer MS or NMO/NMOSD susceptibility, at least in Northern Han Chinese population.
- Published
- 2016
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42. New Cytotoxic Naphthohydroquinone Dimers from Rubia alata.
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Zhao, Si-Meng, Wang, Zhe, Zeng, Guang-Zhi, Song, Wei-Wu, Chen, Xiao-Qiang, Li, Xiao-Nian, and Tan, Ning-Hua
- Published
- 2014
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43. Protective efficacy of a high-growth reassortant swine H3N2 inactivated vaccine constructed by reverse genetic manipulation.
- Author
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Feng Wen, Ji-Hong Ma, Hai Yu, Fu-Ru Yang, Meng Huang, Yan-Jun Zhou, Ze-Jun Li, and Guang-Zhi Tong
- Subjects
SWINE influenza ,INFLUENZA A virus, H3N2 subtype ,PANDEMICS ,VIRAL vaccines ,REVERSE genetics - Abstract
Novel reassortant H3N2 swine influenza viruses (SwIV) with the matrix gene from the 2009 H1N1 pandemic virus have been isolated in many countries as well as during outbreaks in multiple states in the United States, indicating that H3N2 SwIV might be a potential threat to public health. Since southern China is the world's largest producer of pigs, efficient vaccines should be developed to prevent pigs from acquiring H3N2 subtype SwIV infections, and thus limit the possibility of SwIV infection at agricultural fairs. In this study, a high-growth reassortant virus (GD/PR8) was generated by plasmid-based reverse genetics and tested as a candidate inactivated vaccine. The protective efficacy of this vaccine was evaluated in mice by challenging them with another H3N2 SwIV isolate [A/Swine/Heilongjiang/1/05 (H3N2) (HLJ/05)]. Prime and booster inoculation with GD/PR8 vaccine yielded high-titer serum hemagglutination inhibiting antibodies and IgG antibodies. Complete protection of mice against H3N2 SwIV was observed, with significantly reduced lung lesion and viral loads in vaccine-inoculated mice relative to mock-vaccinated controls. These results suggest that the GD/PR8 vaccine may serve as a promising candidate for rapid intervention of H3N2 SwIV outbreaks in China. [ABSTRACT FROM AUTHOR]
- Published
- 2014
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44. Characteristics and evolutions of gas dynamic disaster under igneous intrusions and its control technologies.
- Author
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Wang, Liang, Cheng, Long-biao, Cheng, Yuan-ping, Yin, Guang-zhi, Xu, Chao, Jin, Kan, and Yang, Quan-lin
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GAS dynamics ,COAL mining ,IGNEOUS rocks ,COALBED methane ,IGNEOUS intrusions ,THERMAL analysis ,GAS absorption & adsorption - Abstract
Abstract: Globally, thermal events related to igneous intrusions are widespread in major coal-producing countries. The occurrence, size and distribution of these events play important roles in coal mining safety. The sill distribution area is relatively large in China, which has a particularly serious influence on the damage of coal seams and mining safety. In the Haizi coal mine, magmatic activity is intense and widely distributed and has resulted in 11 coal and gas outburst accidents under a 120-m-thick igneous sill. To study the effect of sill intrusions and their relationship with gas outbursts, samples from the outburst coal seams (Nos. 7, 8, 9 and 10) were taken from the Haizi coal mine at various distances from the sill. We found that under the effect of entrapment and thermal evolution of the igneous sill, the coal pore structure was developed, the gas adsorption capacity was enhanced, and gas outburst risk was increased. The rules of bed separations evolution under the sill were analyzed which indicated that large separation quantities are developed as gas enrichment areas in the bending zone after mining, which brings dynamic disasters risk and good drainage conditions at the same time. The gas pre-extraction technology for the first mining seam and the pressure relief gas drainage technologies via surface wells and distant penetration boreholes were established. Given the practice in the Haizi coal mine, it was determined that the gas drainage technologies could eliminate gas outbursts and promote mining safety under this unique geologic condition. [Copyright &y& Elsevier]
- Published
- 2014
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45. Two new anthraquinone dimers from the stem bark of Pentas schimperi (Rubiaceae).
- Author
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Donfack, Arno Rusel Nanfack, Tala, Michel Feussi, Wabo, Hippolyte Kamdem, Jerz, Gerold, Zeng, Guang-Zhi, Winterhalter, Peter, Tan, Ning-Hua, and Tane, Pierre
- Abstract
Highlights: [•] Isolation and structural elucidation of two new anthraquinone dimers. [•] Cytotoxicity of schimperiquinone B (2) against human cancer cell line BGC-823. [•] First report of cleomiscosin A from the genus Pentas. [Copyright &y& Elsevier]
- Published
- 2014
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46. Opportunistic Interference Alignment with Optimal Capacity in Cognitive Networks.
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AN Yong-li, XIAO Yang, and QU Guang-zhi
- Published
- 2014
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47. Post-hepatectomy liver failure prediction and prevention: Development of a nomogram containing postoperative anticoagulants as a risk factor
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Li, Yi-Ran, Chen, Jin-Dong, Huang, Jian, Wu, Fei-xiang, and Jin, Guang-Zhi
- Abstract
Posthepatectomy liver failure (PHLF) is a serious complication after hepatectomy, and its effective methods for preoperative prediction are lacking. Here, we aim to identify predictive factors and build a nomogram to evaluate patients’ risk of developing PHLF.
- Published
- 2022
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48. Co-removal of phosphorus and nitrogen with commercial 201 × 7 anion exchange resin during tertiary treatment of WWTP effluent and phosphate recovery
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Wei, Liang-Liang, Wang, Guang-Zhi, Jiang, Jun-Qiu, Li, Guo, Zhang, Xiao-Lei, Zhao, Qing-Liang, and Cui, Fu-Yi
- Abstract
AbstractExcessive nitrogen and phosphorus discharge into natural water from wastewater treatment plants still have the potential of causing eutrophication. How to remove those excessive nitrogen and phosphorus in an appropriate way is welcome in practice. This study co-removed nitrate and phosphorus via the operation of commercial 201 × 7 exchange resin column, and recovered phosphate simultaneously. Experimental results demonstrated that the adsorption of -P onto the 201 × 7 resin satisfactorily fitted to Freundlich isotherm, while -N followed Langmuir model, with a maximum adsorption capacity of 12.47 mg/g for -P and 107.59 mg/g for -N, respectively. Up to 92% of -P and 90% of -N in the secondary effluent were recovered by 201 × 7 resin column under the optimal flow rate of 50 BV/h. The exhausted 201 × 7 resin could be regenerated by 5% NaCl within 1 h at a flow rate of 15 BV/h. Moreover, this regeneration would guarantee the effluent -P and -N are lower than the breakthrough points even when 1175 BV wastewater passed the resin column. These findings are of great significance for ensuring stricter effluent phosphorus and total nitrogen discharge criteria.
- Published
- 2015
- Full Text
- View/download PDF
49. Co-removal of phosphorus and nitrogen with commercial 201 × 7 anion exchange resin during tertiary treatment of WWTP effluent and phosphate recovery
- Author
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Wei, Liang-Liang, Wang, Guang-Zhi, Jiang, Jun-Qiu, Li, Guo, Zhang, Xiao-Lei, Zhao, Qing-Liang, and Cui, Fu-Yi
- Abstract
Excessive nitrogen and phosphorus discharge into natural water from wastewater treatment plants still have the potential of causing eutrophication. How to remove those excessive nitrogen and phosphorus in an appropriate way is welcome in practice. This study co-removed nitrate and phosphorus via the operation of commercial 201 × 7 exchange resin column, and recovered phosphate simultaneously. Experimental results demonstrated that the adsorption of PO43--P onto the 201 × 7 resin satisfactorily fitted to Freundlich isotherm, while NO3--N followed Langmuir model, with a maximum adsorption capacity of 12.47 mg/g for PO43--P and 107.59 mg/g for NO3--N, respectively. Up to 92% of PO43--P and 90% of NO3--N in the secondary effluent were recovered by 201 × 7 resin column under the optimal flow rate of 50 BV/h. The exhausted 201 × 7 resin could be regenerated by 5% NaCl within 1 h at a flow rate of 15 BV/h. Moreover, this regeneration would guarantee the effluent PO43--P and NO3--N are lower than the breakthrough points even when 1175 BV wastewater passed the resin column. These findings are of great significance for ensuring stricter effluent phosphorus and total nitrogen discharge criteria.
- Published
- 2015
- Full Text
- View/download PDF
50. Seismic fluid identification using a nonlinear elastic impedance inversion method based on a fast Markov chain Monte Carlo method
- Author
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Zhang, Guang-Zhi, Pan, Xin-Peng, Li, Zhen-Zhen, Sun, Chang-Lu, and Yin, Xing-Yao
- Abstract
Elastic impedance inversion with high efficiency and high stability has become one of the main directions of seismic pre-stack inversion. The nonlinear elastic impedance inversion method based on a fast Markov chain Monte Carlo (MCMC) method is proposed in this paper, combining conventional MCMC method based on global optimization with a preconditioned conjugate gradient (PCG) algorithm based on local optimization, so this method does not depend strongly on the initial model. It converges to the global optimum quickly and efficiently on the condition that efficiency and stability of inversion are both taken into consideration at the same time. The test data verify the feasibility and robustness of the method, and based on this method, we extract the effective pore-fluid bulk modulus, which is applied to reservoir fluid identification and detection, and consequently, a better result has been achieved.
- Published
- 2015
- Full Text
- View/download PDF
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