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CAN Catalyzed Preparation of β-Enamino Ketones from Amines and Acetylacetone

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Chinese Chemical Letters 2006年第12期17卷 1566-1568页

作者： Zheng duan ting LI Xue Jie XUAN Yang Jie WU Department of Chemistry The Key Lab of Chemical Biology and Organic Chemistry of Henan Province The Key and Open Lab of Applied Chemistry of Henan Universities Zhengzhou University Zhengzhou 450052

A variety of β-enamino ketones were synthesized in high to excellent yields by reacting acetylacetone with amines in the presence of a catalytic amount of cerium（IV） ammonium nitrate （CAN） under ultrasonic irradi... 详细信息

关键词： CAN catalyzed β-enamino ketone ultrasound.

Noninvasive imaging of hepatic dysfunction: A state-of-the-art review

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World Journal of Gastroenterology 2022年第16期28卷 1625-1640页

作者： ting duan Han-Yu Jiang Wen-Wu Ling Bin Song Department of Radiology West China HospitalSichuan UniversityChengdu 610041Sichuan ProvinceChina Department of Medical Ultrasound West China Hospital of Sichuan UniversityChengdu 610041Sichuan ProvinceChina

Hepatic dysfunction represents a wide spectrum of pathological changes,which can be frequently found in hepatitis,cholestasis,metabolic diseases,and focal liver *** hepatic dysfunction is often clinically silent until advanced stages,there remains an unmet need to identify affected patients at early stages to enable individualized intervention which can improve *** liver function tests include biochemical parameters and clinical grading systems(e.g.,the Child-Pugh score and Model for End-Stage Liver Disease score).Despite widely used and readily available,these approaches provide indirect and limited information regarding hepatic *** quantitative tests of liver function are based on clearance capacity tests such as the indocyanine green(ICG)clearance ***,controversial results have been reported for the ICG clearance test in relation with clinical outcome and the accuracy is easily affected by various *** techniques,including ultrasound,computed tomography,and magnetic resonance imaging,allow morphological and functional assessment of the entire hepatobiliary system,hence demonstrating great potential in evaluating hepatic dysfunction *** this article,we provide a state-of-the-art summary of noninvasive imaging modalities for hepatic dysfunction assessment along the pathophysiological track,with special emphasis on the imaging modality comparison and selection for each clinical scenario.

关键词： Hepatic dysfunction Ultrasound Computed tomography Magnetic resonance imaging

Non-invasive in vivo Imaging Grading of Liver Fibrosis

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Journal of Clinical and Translational Hepatology 2018年第2期6卷 198-207页

作者： Hanyu Jiang Tianying Zheng ting duan Jie Chen Bin Song Department of Radiology Sichuan University West China HospitalChengduChina

Liver fibrosis(LF),a common consequence of chronic liver diseases with various etiologies,is characterized by excessive accumulation of macromolecules,including collagen,glyco-proteins and proteoglycans,in the *** can result in hepatic dysfunction,cirrhosis,portal hypertension and,in some cases,hepatocellular *** the current gold standard for diagnosing LF,liver biopsy,however,is invasive and prone to sampling errors and procedure-related ***,developing noninvasive,precise and re-producible imaging tests for diagnosing and staging LF is of great *** ultrasound(US),computed tomography(CT)and magnetic resonance(MR)imaging can depict morphological alterations of advanced LF,but have relatively limited capability characterizing early-stage *** order to optimize the diagnostic performances of noninvasive imaging techniques for LF across its entire spectrum of severity,a number of novel methods,including US elastog-raphy,CT perfusion imaging and various MR imaging–based techniques,have been established and introduced to clinical *** this review,we intended to summarize current noninvasive imaging techniques for LF,with special emphasis on the possible roles,advantages and limitations of the new emerging imaging modalities.

关键词： Liver cirrhosis Ultrasonography Computed tomography Magnetic resonance imaging

Preparation of pure SnO_2 powders from tin slag of printed circuit boards waste

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Rare Metals 2014年第6期33卷 749-753页

作者： Bin Li Shen-Gen Zhang Kun Zhang De-An Pan Jian-Jun Tian duan-ting Zhang Institute for Advanced Materials and Technology School of Materials Science and Engineering University of Science and Technology Beijing Beijing Nonferrous Metals and Rare Earth Research Institute

The recycling method and principle of SnO2 from the tin slag of printed circuit boards（PCB） waste were investigated. In this study, pure SnO2 powders were obtained through a multi-step process including ball-milling, roasting, dissolving, precipitating, and pickling. The total recovery rate of tin can be up to 91 %. The SnO2 powders obtained is the single phase, and the content of SnO2 is up to 99.9 %. However, the SnO2 particles are easier to agglomerate during the precipitation process. The agglomerate SnO2 particles are about 7.778 lm in mean particle size（D50）. This preparation method presents a viable alternative for the tin slag recycling. The tin is not only recycled, but also reused directly to prepare pure SnO2 powders.

关键词： SnO2 Tin slag Printed circuit boards(PCB) waste

A Versatile Coating Approach to Fabricate Superwetting Membranes for Separation of Water-in-Oil Emulsions

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Chinese Journal of Polymer Science 2016年第10期34卷 1234-1239页

作者： Yi Hou Chun-ting duan 赵宁 Huan Zhang Yi-ping Zhao Li Chen Hong-jun Dai 徐坚 School of Materials Science and Engineering Tianjin Polytechnic University Tianjin 300387 China Beijing National Laboratory for Molecular Sciences Laboratory of Polymer Physics and Chemistry Institute of Chemistry Chinese Academy of Sciences Beijing 100190 China SEAPS Science & Technology Co. Ltd. Caofeidian Industrial Zone Tangshan 063000 China

Separation of oil/water mixtures, especially for the emulsified oil/water mixtures, is important because of the frequent occurrence of oil spill accidents. Utilizing superwetting porous membrane has become a promising approach to separate either surfactant-free or surfactant-stabilized emulsions. Herein we report a facile and versatile strategy for preparing hydrophobic/under-oil superhydrophobic membranes by coating the skeletons of the membranes with the poly[（3,3,3- trifluoropropyl）methylsiloxane] （PTFPMS） nanoparticles. The obtained membranes could be used to separate various water- in-oil emulsions with high flux and separation efficiency. In addition, owning to the outstanding resistance of PTFPMS to the most organic solvents or oils, the modified membranes exhibited the excellent reusability and the antifouling properties that were critical in the practical applications. Many commercially available membranes can be modified by such a simple method.

关键词： Emulsion Membrane Separation Superwetting Poly[(3,3,3-trifluoropropyl)methylsiloxane].

Effect of Tai Chi on Cardiac and Static Pulmonary Function in Older Community-Dwelling Adults at Risk of Ischemic Stroke: A Randomized Controlled Trial

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Chinese Journal of Integrative Medicine 2019年第8期25卷 582-589页

作者： ZHENG Guo-hua ZHENG Xin LI Jun-zhe duan ting-jin TAO Jing CHEN Li-dian College of Nursing and Health Management Shanghai University of Medicine and Health Sciences Shanghai (201318) China College of Rehabilitation Medicine Fujian University of Traditional Chinese Medicine Fuzhou (350122)China Department of Physical Education Fujian University of Traditional Chinese Medicine Fuzhou (350122)China Fujian Key Laboratory of Rehabilitati on Tech no logy Fujia n Un iversity of Traditional Chinese Medicine Fuzhou (350122)China Collaborative Inno vation Cen ter for Rehabilitati on Tech no logy Fujian University of Traditional Chinese Medicine Fuzhou (350122)China

Objective: To evaluate the effect of tai chi exercise on cardiac and static lung function for older community-dwelling adults at risk of ischemic stroke. Methods: A total of 170 older community-dwelling adults (aged 55–75 years old) at risk of ischemic stroke were allocated to either tai chi training group (85 cases, five 60-min sessions of tai chi training per week for 12 weeks) or control group (85 cases, usual pbysical activity for 12 weeks) using a computer-generated randomization. The echocardiographic parameters of cardiac structure, cardiac function and static lung function were measured at baseline, after 12 weeks of intervention and additional 12-week follow-up period by a blinded professional staff member using a color Doppler ultrasound imaging device or a cardiopulmonary function instrument. The t test and linear mixed model based on the intention-to-treat analysis principle was used to calculate the effect. The adverse effect was observed. Results: Most of echocardiographic parameters on the cardiac structure, cardiac function and static lung function between the tai chi group and control group did not have a significant difference either post 12-week intervention or additional 12-week follow-up period. Only three parameters involving in right ventricular diameter (P=0.024), main pulmonary artery diameter (P=0.002) and vital capacity maximum (P=0.036) were beneficial to be improved in the tai chi group compared to the control group by the analysis of mixed linear model. No adverse effects were found during the intervention period. Conclusions: The 12-week tai chi exercise did not have an obvious beneficial effect on cardiac structure, cardiac function and static lung function in older community-dwelling adults at risk of ischemic stroke.(Trial registration No. ChiCTR-TRC-13003601)

关键词： tai chi cardiac structure and function static lung function ischemic stroke randomized controlled trial

Imaging evaluation of sorafenib for treatment of advanced hepatocellular carcinoma

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Chinese Journal of Cancer Research 2018年第3期30卷 382-394页

作者： Tianying Zheng Hanyu Jiang Yi Wei Zixing Huang Jie Chen ting duan Bin Song Department of Radiology Sichuan University West China Hospital

Sorafenib,which is a novel targeted agent,plays an important role in treating advanced hepatocellular carcinoma（HCC）through its antiangiogenic and antiproliferative ***,conventional morphology-based radiographic evaluation systems may underestimate the efficacy of sorafenib in HCC due to a lack of apparent tumor shrinkage or altered tumor morphology in many *** calls for the development of more accurate imaging methods for evaluating *** introduction of tumor burden measurements based on viability and other evolving imaging approaches for assessing therapeutic effects are promising for overcoming some of the limitations of the morphology-based *** this review,we summarize various imaging methods that are used to assess treatment responses of advanced HCC to *** markers predictive of prognosis in advanced HCC after treatment with sorafenib are also included and discussed.

关键词： Hepatocellular carcinoma sorafenib computed tomography magnetic resonance imaging

Noninvasive imaging of hepatocellular carcinoma: From diagnosis to prognosis

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World Journal of Gastroenterology 2018年第22期24卷 2348-2362页

作者： Han-Yu Jiang Jie Chen Chun-Chao Xia Li-Kun Cao ting duan Bin Song Department of Radiology Sichuan University West China Hospital

Hepatocellular carcinoma(HCC) is the most common primary liver cancer and a major public health problem worldwide. Hepatocarcinogenesis is a complex multistep process at molecular, cellular, and histologic levels with key alterations that can be revealed by noninvasive imaging modalities. Therefore, imaging techniques play pivotal roles in the detection, characterization, staging, surveillance, and prognosis evaluation of HCC. Currently, ultrasound is the first-line imaging modality for screening and surveillance purposes. While based on conclusive enhancement patterns comprising arterial phase hyperenhancement and portal venous and/or delayed phase wash-out, contrast enhanced dynamic computed tomography and magnetic resonance imaging(MRI) are the diagnostic tools for HCC without requirements for histopathologic confirmation. Functional MRI techniques, including diffusion-weighted imaging, MRI with hepatobiliary contrast agents, perfusion imaging, and magnetic resonance elastography, show promise in providing further important information regarding tumor biological behaviors. In addition, evaluation of tumor imaging characteristics, including nodule size, margin, number, vascular invasion, and growth patterns, allows preoperative prediction of tumor microvascular invasion and patient prognosis. Therefore, the aim of this article is to review the current state-of-the-art and recent advances in the comprehensive noninvasive imaging evaluation of HCC. We also provide the basic key concepts of HCC development and an overview of the current practice guidelines.

关键词： Magnetic resonance imaging Surveillance Computed tomography Staging Ultrasound Guidelines Diagnosis Hepatocellular carcinoma Prognosis

Magnetic endoscopic imaging vs standard colonoscopy:Meta-analysis of randomized controlled trials

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World Journal of Gastroenterology 2013年第41期19卷 7197-7204页

作者： Yi Chen Yu-ting duan Qin Xie Xian-Peng Qin Bo Chen Lin Xia Yong Zhou Ning-Ning Li Xiao-ting Wu Department of Gastrointestinal Surgery West China HospitalSichuan University Department of Radiology People’s Hospital Department of Gastroenterology West China HospitalSichuan University

AIM:To assess the theoretical advantages of magnetic endoscope imaging(MEI)over standard colonoscopies(SCs)and to compare their ***:Electronic databases,including PubMed,EMBASE,the Cochrane library and the Science Citation Index,were searched to retrieve relevant *** addition,abstracts from papers presented at professional meetings and the reference lists of retrieved articles were reviewed to identify additional *** metaanalyses were performed using RevMan 5.1.A random effect model with the Mantel-Haenszel method was used for pooling dichotomous and continuous data.A sensitivity analysis was performed by excluding the trials with a small number of patients and by excluding the trials performed by inexperienced ***:Eight randomized controlled trials(RCTs),including 2967 patients,were included in the metaanalysis to compare cecal intubation rates and times,sedation dose,abdominal pain scores and the use of ancillary maneuvers between MEI and *** overall OR was 1.92(95%CI:1.13-3.27,eight RCTs),as indicated by the cecal intubation rate of MEI compared with SC,but MEI did not have any distinct advantage over SC for cecal intubation time(MD=-0.07,95%CI:-0.16-0.02;three RCTs).MEI did not generally result in lower pain *** were also analyzed for the two subgroups based on the endoscopists’experience level to evaluate cecal intubation *** presented better outcomes for non-experienced colonoscopists than experienced ***:The real-time magnetic imaging system is of benefit in training and educating inexperienced endoscopists and improves the cecal intubation rate for experienced and inexperienced endoscopists.

关键词： Colonoscope Magnetic endoscope imaging Magnetic Standard colonoscope Meta-analysis