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基于邻苯二甲腈树脂的高耐热电子封装模塑料的制备

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热固性树脂 2024年第4期39卷 51-56,63页

作者：黄家腾朱飞宇包颖费小马魏玮江南大学化学与材料工程学院江苏无锡214122 无锡创达新材料股份有限公司江苏无锡214028

以4-氨基苯氧基邻苯二甲腈(APN)和多官能环氧树脂为基体树脂,2-甲基咪唑为固化促进剂,配合无机填料等助剂,制备了电子封装模塑料(AEM)。对AEM的热性能、力学性能、耐老化性能、介电性能和阻燃性能进行了测试,并与商用环氧模塑料(EMC)作... 详细信息

以4-氨基苯氧基邻苯二甲腈(APN)和多官能环氧树脂为基体树脂,2-甲基咪唑为固化促进剂,配合无机填料等助剂,制备了电子封装模塑料(AEM)。对AEM的热性能、力学性能、耐老化性能、介电性能和阻燃性能进行了测试,并与商用环氧模塑料(EMC)作了对比。AEM的成型工艺与EMC相容。与商用EMC固化物相比,固化后的AEM表现出优异的高温稳定性(T_(g)>230℃)和耐高温老化性能(200℃,500h)。此外,AEM固化物具有较低的介电常数和介电损耗,表现出良好的电绝缘性。值得注意的是,AEM固化物可以在不添加阻燃剂的情况下具有阻燃效果,且能达到UL-94V-0级别。该模塑料在功率器件封装领域具有良好的应用前景。

关键词：邻苯二甲腈环氧树脂模塑料耐热阻燃电子封装

Recent Advances on Chiral Mobile Phase Additives: A Critical Review

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Journal of Analysis and Testing 2022年第2期6卷 129-162页

作者： Yuan Li xiao-Ning Jin Yue Cheng xiao-fei ma Yong Wang Department of Chemistry School of ScienceTianjin UniversityTianjin 300075China

Chirality is one of the fundamental attributes of nature, which exists in different or even completely opposite metabolic,toxicological and pharmacological properties in organisms. Consequently, obtaining enantiomerically pure drugs or optically active intermediates is highly desired in many fields like medicine, food and biochemistry. Thereby, it also promoted the development of various enantiomer selective separation techniques. Among the many chiral separation methods, chiral mobile phase additives(CMPAs) are widely used in various chromatographic techniques due to their simple operation,good versatility and low price. There have been a number of reviews on the research progress of CMPAs in last 2 decades,but they only reviewed the application of CMPAs in one specific chromatographic technique. Therefore, to provide a more comprehensive illustration of CMPAs in separation technology, their applications in high-performance liquid chromatography, capillary electrophoresis, countercurrent chromatography, nano-liquid chromatography were summarized and their advantages and disadvantages were briefly introduced in this critical review. The application of molecular simulation in the study of chiral separation mechanism was briefly summarized. We expect that it will provide researchers with the latest developments in this field and potential inspirations.

关键词： Chiral mobile phase additives High-performance liquid chromatography(HPLC) Capillary electrophoresis(CE) Countercurrent chromatography(CCC) Nano-liquid chromatography(Nano-LC)

An efficient and facile procedure for synthesis of octyl polyglucoside

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Chinese Chemical Letters 2007年第10期18卷 1173-1175页

作者： Ying Wu Jiu Gao Yu xiao fei ma Jian She Zhang Department of Chemistry School of Science Tianjin University Tianjin 300072 China

Nonionic surfactant alkyl polyglucoside （APG） was prepared by direct glycosidation of alkyl alcohol with glucose in the presence of sulfate acid-silica gel （H2SO4/SiO2） as solid acidic catalyst. The quantity of catalyst was only of 1 wt%, based on the glucose, and the conversion of glucose was close to 100% at 110 ℃ in 1.5 h. The product was characterized by FT-IR, mass and ^1H NMR spectra. The degree of polymerization （DP） of the glucose in the product was 1.37, and critical micelle concentration （CMC） of product was only 0.0104 wt%.

关键词： Alkyl polyglucoside Sulfate acid-silica gel Solid acidic Catalyst

Synthesis of aliphatic amidediol and used as a novel mixed plasticizer for thermoplastic starch

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Chinese Chemical Letters 2008年第4期19卷 395-398页

作者： Jian She Zhang Jiu Gao Yu Ying Wu xiao fei ma School of Science Tianjin UniversityTianjin 300072PR China

In this paper,aliphatic amidediol was synthesized and mixed with glycerol used as a plasticizer for preparing thermoplastic starch（AGPTPS）.The yield of aliphatic amidediol was 91%.FF-IR expressed that the mixture of aliphatic amidediol and glycerol formed stronger and stable hydrogen bond with starch molecules compared to the native *** scanning electron microscope（SEM）native cornstarch granules were proved to transfer to a homogeneous continuous *** being stored for a period time at room temperature,the mechanical properties of AGPTPS were also *** a mixed plasticizer,aliphatic amidediol and glycerol would be practical to extend TPS application scopes.

关键词： Thermoplastic starch Aliphatic amidediol Glycerol Plasticizer

Surface Polarization Effects on Collapse Transition of Polyelectrolyte Brushes

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Chinese Journal of Polymer Science 2024年第9期42卷 1313-1320,I0006页

作者： xiao-fei Xu State Key Laboratory of Chemical Engineering and School of Chemical Engineering East China University of Science and TechnologyShanghai200237China

Polyelectrolyte brushes(PEBs)are commonly used to modify surface that have attracted great research *** dielectric permittivity of the grafted surface is typically significantly different from that of solution,which results in surface polarization(SP)effect with a jump of electric *** is thus important to study how SP alters the PEB’s structure and *** this work,the SP effects on PEB structure was studied using a statistical thermodynamic *** free energy functional to describe SP effect was constructed by using the image-charge ***,the electrostatic potential was solved from a modified Poisson-Boltzmann equation taking the ion solvation effect into *** the absence of SP,the thickness of PEB exhibited a continuous collapse transition when decreasing the solvent *** the presence of SP,the collapse became a jump-like *** energy analysis showed that the long-range Coulombic interaction dominated the transition because of the enhanced counterion condensation in the presence of *** theory provides an effective tool to study SP effect on PEBs,and the results explain the underlying physics in PEB collapse transition.

关键词： Surface polarization Polyelectrolyte brush Image charge Ion solvation Polyelectrolyte collapse transition

A retrospective monocenter review of simultaneous pancreaskidney transplantation with bladder drainage in China

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Chinese Medical Journal 2011年第2期124卷 205-209页

作者： BI Hai HOU xiao-fei ma Lu-lin LUO Kang-ping WANG Guo-liang ZHAO Lei LIU Ya-li Department of Urology Third Hospital of Peking University Beijing 100191 China

Background Simultaneous pancreas-kidney transplantation （SPKT） frees the diabetic patient with end-stage nephropathy from dialysis and daily insulin ***,we review consecutive cases of SPKT with bladder drainage performed at our institution over an 8-year *** The study population included 21 patients （16 males and 5 females） who underwent SPKT between September 2001 and September *** patients had type-1 diabetes and 14 had type-2 *** patients were on dialysis at the time of *** after cardiac death donors were selected for *** mean human leukocyte antigen match was 2 （range 0-4）.SPKT was always performed using bladder drainage and vascular anastomoses to the systemic *** treatment consisted of anti-lymphocyte globulin induction followed by tacrolimus,mycophenolate mofetil,and *** The mean hospital stay was 45.43 *** a mean follow-up of 39.4 months,survival rates for patient,kidney,and pancreas were 76.2%,76.2%,and 66.7% at 1 year;76.2%,59.3%,and 55.6% at 5 years;and 57.1%,39.5%,and 41.7% at 8 years,*** complications included anastomotic leaks,reflux pancreatitis,and *** patients died from septic shock （n=3）,duodenal stump leak （1）,cardiac arrest （1）,or renal failure （1）.Eight kidney grafts were lost due to acute rejection （n=2）,chronic rejection （3）,and death with a functioning graft （3）.Pancreatic graft failure （9） was caused by thrombosis （n=1）,rejection （2）,duodenal stump leak （1）,and death with a functioning graft （5）.Concluslons SPKT is a valid therapeutic option for uremic diabetics although few hospitals in China can undertake SPKT.

关键词： pancreas transplantation kidney transplantation survival rate postoperative complications

Progress in the treatment of advanced hepatocellular carcinoma with immune combination therapy

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World Journal of Gastrointestinal Oncology 2024年第2期16卷 273-286页

作者： Di Pan Hao-Nan Liu Peng-fei Qu xiao ma Lu-Yao ma xiao-xiao Chen Yu-Qin Wang xiao-Bing Qin Zheng-Xiang Han Department of Oncology The Affiliated Hospital of Xuzhou Medical UniversityXuzhou 221000Jiangsu ProvinceChina Department of Gastroenterology The Second Affiliated Hospital of Xuzhou Medical UniversityXuzhou 221000Jiangsu ProvinceChina Department of General Surgery The Affiliated Hospital of Xuzhou Medical UniversityXuzhou 221000Jiangsu ProvinceChina

Advanced hepatocellular carcinoma(HCC)is a severe malignancy that poses a serious threat to human *** to challenges in early diagnosis,most patients lose the opportunity for radical treatment when ***,recent advancements in cancer immunotherapy provide new directions for the treatment of *** instance,monoclonal antibodies against immune check-point inhibitors(ICIs)such as programmed cell death protein 1/death ligand-1 inhibitors and cytotoxic t-lymphocyte associated antigen-4 significantly improved the prognosis of patients with ***,tumor cells can evade the immune system through various *** the rapid development of genetic engineering and molecular biology,various new immunotherapies have been used to treat HCC,including ICIs,chimeric antigen receptor T cells,engineered cytokines,and certain cancer *** review summarizes the current status,research progress,and future directions of different immunotherapy strategies in the treatment of HCC.

关键词： Hepatocellular carcinoma Immunotherapies Immune checkpoint inhibitor Clinical efficacy Adverse reactions

Metamorphic P-T conditions and ages of garnet-biotite schists in the Dahongshan Group from the southwestern Yangtze Block

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Acta Geochimica 2024年第4期43卷 707-718页

作者： Jun-xiao ma Guang-shu Yang Yong-feng Yan xiao-fei Xu Yun-hua Ren Hui Zhao xiao-jun Zheng Yuan Qin Faculty of Land Resources Engineering Kunming University of Science and TechnologyKunming 650093China Geological Team 306 of Yunnan Non-Ferrous Metals Geological Bureau Kunming 650217China Yunnan Provincial Bureau of Non-Ferrous Geology Kunming 650051China

The Dahongshan Group,situated at the southwestern margin of the Yangtze Block,represents a geological unit characterized by relatively high-grade metamorphism in the *** paper investigates the garnet-biotite schist from the Laochanghe Formation of the Dahongshan Group,employing an integrated approach that includes petrological analysis,phase equilibrium modeling,and zircon U-Pb *** schist is mainly composed of garnet,biotite,plagioclase,quartz,rutile,and *** equilibrium modeling revealed the peak metamorphic conditions of 8-9 kbar and 635-675°*** further integrating the prograde metamorphic profile of garnet and geothermobarometric results,a clockwise P-T metamorphic evolution path is constructed,which includes an increase in temperature and pressure during the prograde ***-ICP-MS zircon U-Pb dating and zircon Ti thermometry constrains the post-peak metamorphic age of 831.2±7.2 *** with previously reported results,it is revealed that the southwestern margin of the Yangtze Block experienced a large-scale regional metamorphism during the Neoproterozoic(890-750 ma),which is related to the collisional orogenic *** may be associated with the late-stage assembly of the Rodinia supercontinent or with local compression and subduction processes during the breakup of the Rodinia supercontinent.

关键词： Southwestern Yangtze Block Dahongshan Group Phase equilibrium modeling Zircon U-Pb dating Neoproterozoic metamorphism

Application of radioactive iodine-125 microparticles in hepatocellular carcinoma with portal vein embolus

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World Journal of Gastrointestinal Surgery 2024年第7期16卷 2023-2030页

作者： Peng Meng Ji-Peng ma xiao-fei Huang Kang-Le Zhang The Fourth Department of Oncology Yantai Hospital of Traditional Chinese MedicineYantai 264001Shandong ProvinceChina Department of Medical Services Yantai Hospital of Traditional Chinese MedicineYantai 264001Shandong ProvinceChina Department of Hepatobiliary Surgery The First Affiliated Hospital of Sun Yatsen UniversityGuangzhou 510062Guangdong ProvinceChina The Third Department of Oncology Yantai Hospital of Traditional Chinese MedicineYantai 264001Shandong ProvinceChina

BACKGROUND Radioactive iodine-125(125I)microparticle therapy is a new type of internal radiation therapy that has shown unique advantages in the treatment of malignant tumors,especially hepatocellular *** with hepatocellular carcinoma frequently experience portal vein embolism,which exacerbates the difficulty and complexity of treatment.125I particles,used in local radiotherapy,can directly act on tumor tissue and reduce damage to surrounding healthy *** retrospective analysis,this study discussed the efficacy and safety of radioactive 125I particles in portal vein embolization patients with hepatocellular carcinoma in order to provide more powerful evidence supporting clinical *** To investigate the effect of transcatheter arterial chemoembolization combined with portal vein 125I particle implantation in the treatment of primary liver cancer patients with portal vein tumor thrombus and its influence on liver *** The clinical data of 96 patients with primary liver cancer combined with portal vein tumor thrombus admitted to our hospital between January 2020 and December 2023 were retrospectively ***-two patients received treatment with transcatheter arterial chemoembolization and implantation of 125I particles in the portal vein(combination group),while 44 patients received treatment with transcatheter arterial chemoembolization alone(control group).The therapeutic effects on tumor lesions,primary liver cancer,and portal vein tumor embolisms were compared between the two *** in relevant laboratory indexes before and after treatment were *** t test was used to compare the measurement data between the two groups,and the χ^(2) test was used to compare the counting data between *** The tumor lesion response rate in the combination group(59.62%vs 38.64%)and the response rate of patients with primary liver cancer complicated with portal vein tumor thrombus(80.77%vs 59.09%)were signi

关键词： Radioactive iodine-125 Hepatocellular carcinoma Transcatheter arterial chemoembolization Portal vein embolus Retrospective study