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Flame-retardant and antibacterial flexible polyurethane foams with high resilience based on a P/N/Si-containing system

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Journal of Materials Science & Technology 2024年第15期182卷 141-151页

作者： Ping Li Hui Liu ying-jun xu De-Yi Wang Yun Liu Ping Zhu College of Textiles&Clothing Institute of Functional Textiles and Advanced MaterialsNational Engineering Research Center for Advanced Fire-Safety Materials D&A(Shandong)Qingdao Key Laboratory of Flame Retardant Textile MaterialsState Key Laboratory of Bio-Fibers and Eco-TextilesQingdao UniversityQingdao 266071China IMDEA Materials Institute C/Eric Kandel 2GetafeMadrid 28906Spain

In this work,the coatings used phosphorylated chitosan(PCS)and GP-108 via the dip-coating method presented exceptional flame retardancy and antibacterial properties for flexible polyurethane foams(FPUF).PCS/GP@FPUF with 35%weight gain of PCS/GP can receive the UL-94 V-0 rating and obtain a 32%reduction of peak heat release rate value compared with that of FPUF,and it remains relatively dense char *** effective heat of combustion of PCS/GP@FPUF is 21.6 kJ/g,presenting a 22%decrease compared with that of ***,the PCS/GP coatings mainly have the condensed-phase flame-retardant mechanism associated with the analysis of char residues and the volatile products released through the thermal degradation process.X-ray photoelectron spectroscopy results confirm that the char residues of PCS/GP@FPUF consist of highly-graphitized carbon and it formed P-N-Si synergistic char *** addition,the antibacterial rates of PCS/GP@FPUF against Escherichia coli(***)and Staphylococcus aureus(***)are 99.99%,and the incorporation of GP-108 does not influence the antibacterial proper-ties of ***,the resiliency of FPUFs has been slightly ***,the flame-retardant and antibacterial FPUFs with wonderful resiliency are hopeful to be applied as filler materials for vehicle seats and obtain longer service lives.

关键词： Environmental organic-inorganic coatings FPUF Flame retardancy Antibacterial properties

Carbon Fibers Decorated by Polyelectrolyte Complexes toward Their Epoxy Resin Composites with High Fire Safety

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Chinese Journal of Polymer Science 2018年第12期36卷 1375-1384页

作者： Xiao-Hui Shi Li Chen Bo-Wen Liu Jia-Wei Long ying-jun xu Yu-Zhong Wang School of Chemical Engineering National Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan) State Key Laboratory of Polymer Materials Engineering Sichuan University Chengdu 610064 China

The achievement of both robust fire-safety and mechanical properties is of vital requirement for carbon fiber （CF） composites. To this end, a facile interracial strategy for fabricating flame-retardant carbon fibers decorated by bio-based polyelectrolyte complexes （PEC） consisting of chitosan （CH） and ammonium polyphosphate （APP） was developed, and its corresponding fire-retarded epoxy resin composites （EP/（PEC@CF）） without any other additional flame retardants were prepared. The decorated CFs were characterized by SEM- EDX, XPS and XRD, indicating that the flame-retardant PEC coating was successfully constructed on the surface of CF. Thanks to the nitrogen- and phosphorous-containing PEC, the resulting composites exhibited excellent flame retardancy as the limiting oxygen index （LOI） increased from 31.0% of EP/CF to 40.5% and UL-94 V-0 rating was achieved with only 8.1 wt% PEC. EP/（PEC8.1@CF） also performed well in cone calorimetry with the decrease of peak-heat release rate （PHRR） and smoke production rate （SPR） by 50.0% and 30.4%, respectively, and the value of fire growth rate （FIGRA） was also reduced to 3.41 kW·m-2- s-1 from 4.84 kW· m-2· s-1, suggesting a considerably enhanced fire safety. Furthermore, SEM images of the burning residues revealed that the PEC coating exhibited the dominant flame-retardant activity in condensed phase via the formation of compact phosphorus-rich char. In addition, the impact strength of the composite was improved, together with no obvious deterioration of flexural properties and glass transition temperature. Taking advantage of the features, the PEC-decorated carbon fibers and the relevant composites fabricated by the cost-effective and facile strategy would bring more chances for widespread applications.

关键词： Fire safety Carbon fiber composites Epoxy resin Polyelectrolyte complexes

Physical exercise reverses immuno-cold tumor microenvironment via inhibiting SQLE in non-small cell lung cancer

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Military Medical Research 2024年第4期11卷 616-619页

作者： Zhi-Wen Luo Ya-ying Sun Wei Xia jun-ying xu Dong-Jing Xie Chun-Meng Jiao Ji-Ze Dong Hui Chen Ren-Wen Wan Shi-Yi Chen Jie Mei Wen-jun Mao Department of Sports Medicine Huashan Hospital Affiliated to Fudan UniversityShanghai 200040China Department of Sports Medicine Shanghai General HospitalShanghai 200080China Department of Critical Care Medicine the Affiliated Wuxi People’s Hospital of Nanjing Medical UniversityWuxi 214023JiangsuChina Department of Oncology the Affiliated Wuxi People’s Hospital of Nanjing Medical UniversityWuxi 214023JiangsuChina Guangdong Pharmaceutical University Guangzhou 510006China Institute of Acupuncture Research Institutes of Integrative MedicineFudan UniversityShanghai 200433China Department of Cardiothoracic Surgery the Affiliated Wuxi People’s Hospital of Nanjing Medical UniversityWuxi 214023JiangsuChina

Dear Editor,Physical exercise has been shown to be associated with reduced cancer incidence and cancer-associated mortality[1,2],but the underlying mechanisms are *** regulation has emerged as one of the most prominent mechanisms explaining the effects of exercise on cancer[1,2].Physical exercise primarily lowers blood cholesterol and triglycerides,and protects against cardiovascular diseases[3].However,whether physical exercise can modulate cholesterol metabolism in tumor cells is currently unknown.

关键词： Physical exercise Non-small cell lung cancer(NSCLC) Squalene epoxidase(SQLE) Tumor immune microenvironment(TIME)

Expression of NMDA receptor subunits and its role in SVZ of early postnatal rat’s brain

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Expression of NMDA receptor subunits and its role in SVZ of ...

A versatile method for preparing FePO4 as a promising electrode material for rechargeable lithium batteries

中国神经科学学会第四次会员代表大会暨第八届全国学术会议

作者： jun-ying GAO,Tie-jun xu~* Department of Anatomy and Neurobiology,xuzhou Medical College,xuzhou,221002

＜正＞Objective Study the normal expression of NMDA receptor subunit NR1,NR2A,NR2B and identify the cell type of receptor existence,as well as its role in cell proliferation in the subventricular zone（SVZ） of the rat’s brain during the early postnatal *** The early postnatal different age point rats（postnatal day 1,P1d;P3d;P7d;P14d;P21d;P28d,were used to test the expression changes of the NMDA receptor subunit NR1,NR2A and NR2B in the SVZ,as well as the astrocytes（GFAP+）,mature neurons（NeuN+） and proliferation cells（PCNA+） at the same zone by immunohis-tochemical mafhed and HE *** were injected intraperitoneally of NMDA receptor agonist NMDA（2 mg/kg/d）, selective non-competitive NMDA receptor antagonist MK-801（10 mg/kg） and NR2B antagonist Ro25-6981（40 mg/kg） respectively at the age P3d to observe the cell density changes of the proliferation cells in the SVZ of P7d,P14d and P28d rat’s brain by immunohistochemical method and HE *** The total cell count and density of the SVZ decreased with age during the early postnatal *** NMDA receptor subunit NR1,NR2A and NR2B expressed in the SVZ’s cells of the rat brain in each tested postnatal age point（postnatal age day 1:P1,P3,P7,P14,P21,P28）.The expression of the different subunits showed different variation *** cell count and density of the prolifetation cell （PCNA+） both decreased signigicantly with *** astrocyte cell marker GFAP showed a very low expression level at Pld in the SVZ,then gradually increased with *** appears to occupy almost the entire SVZ at the age *** the intervention of the NMDA receptor agonist NMDA（2 mg/kg/d）,at the age P7d,the total cell count increased significantly {P＜0.05）;the PCNA+ cell count increased notably at the age P14（P＜0.05）.The PCNA+ cell count of the MK-801 group and Ro25-6981 group decreased significantly compare with that of normal at the age P7（P＜0.05）and P14（P＜0.05）,then gradually increased with *** the age P28,the PCNA+

关键词： NMDA receptor SVZ neurogenesis PCNA

来源： cnki会议评论

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兰州大学学报（自然科学版） 2007年第4期43卷 144-146页

作者： LU ying-jun xu Yan-bin YANG Ru-dong YANG Zheng-yin YAN Lan College of Chemistry and Chemical Engineering Lanzhou University Lanzhou 730000 China

Recently, iron-containing compounds have tended to be attractive candidates as active cathode materials. Among them, olivine-structured LiFePO_4 is one of the most interesting materials due to its low cost, non-toxicity, high specific capability and good cycle performance. For LiFePO_4, its theoretical capacity is 170 （mA·h）/g and the charge/discharge voltage is about 3.4 V versus Li/Li~＋.

关键词：电极材料偏磷酸铁锂离子电池阴极可再充电性能

Serum brain natriuretic peptide in children with Kawasaki disease

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World Journal of Emergency Medicine 2010年第2期1卷 114-117页

作者： Yu-ping Sun Chao-ping Wei Wen-di Wang Xing-chang Zheng Ye-jun Wang Shao-chun Ma ying-jun xu Qingdao Children＇s Hospital Qingdao 266011 China

BACKGROUND： Kawasaki disease （KD） is a common cause of acquired heart disease in children. Recent studies have focused on the biochemical markers of the myocardium, their high sensitivity and specificity and significance in the diagnosis of KD. This study aimed to determine the serum level of brain natriuretic peptide （BNP） and its relation with the heart function of children with KD and to explore its clinical value in diagnosis of ***： Forty-three KD children, aged from 5 months to 8 years （mean 2.3±0.6 years ）, were admitted to Qingdao Children＇s Hospital from February 2007 to April 2009. Among them 27 were male, and 16 female. The 43 patients served as a KD group. Patients with myocarditis, cardiomyopathy, congenital heart disease and other primary heart diseases were excluded. Thirty healthy children, aged from 3 months to 15 years （mean 2.5±0.8 years） or 17 males and 13 females served as a control group. There were no significant differences in age and gender between the two groups （P〉0.05）. In the KD group, ELISAwas used to measure the levels of serum BNP in acute and convalescent stages; and in the control group, the levels of serum BNP were measured once randomly. Left ventricular ejection fraction （LVEF）, left ventricular shorten fraction （LVSF）, cardiac index （CI） and left ventricular inflow velocity through the mitral annulus （including E-velocity and A-velocity） were measured by two- dimensional echocardiography in the acute and convalescent stages in the KD group. All data were expressed as mean±SD. The methods of analysis included Student＇s t test and the linear regression analysis test. P〈0.05 was considered statistically ***： The level of serum BNP in the acute stage （517.26±213.40） ng/ml was significantly higher than that in the convalescent stage （91.56±47.97） ng/ml in the control group （37.55±7.56） ng/ ml （P〈0.01）. The levels of LVEF, LVSF and CI in the acute stage were significantly lower than those in the convalescent sta

关键词： Natriuretic peptide brain Kawasaki disease Ejection fraction left ventricular Shorten fraction left ventricular Cardiac index E/A Correlation Children

基于S3C2410X的GPON用户终端的设计

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光通信技术 2007年第4期31卷 16-18页

作者：应旭君张江鑫浙江工业大学信息工程学院杭州310014

首先简要介绍了GPON网络系统结构,在此基础上根据GPON协议和用户终端要求提出了基于S3C2410X的GPON用户终端整体结构,分别从单纤三向光学模块,光电收发模块,FPGA处理模块和微处理器模块这四方面对它进行阐述。重点论述了微处理器模块,... 详细信息

首先简要介绍了GPON网络系统结构,在此基础上根据GPON协议和用户终端要求提出了基于S3C2410X的GPON用户终端整体结构,分别从单纤三向光学模块,光电收发模块,FPGA处理模块和微处理器模块这四方面对它进行阐述。重点论述了微处理器模块,包括嵌入式微处理器的选型,外围电路及应用接口设计和嵌入式微处理器S3C2410X软件平台的选择。

关键词： GPON 用户终端 S3C2410X Linux

Effects of Bifidobacterium lactis BLa80 on fecal and mucosal flora and stem cell factor/c-kit signaling pathway in simulated microgravity rats

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World Journal of Gastroenterology 2025年第1期31卷 93-109页

作者： Ping Zhang ying Zhu Pu Chen Tong Zhou Zhe-Yi Han jun Xiao Jian-Feng Ma Wen Ma Peng Zang ying Chen Graduate School Hebei North UniversityZhangjiakou 075000Hebei ProvinceChina Key Laboratory of Aerospace Nutrition and Food Engineering China Astronaut Research and Training CenterBeijing 100094China Department of Gastroenterology The Air Force Medical CenterBeijing 100142China Department of Blood Transfusion Air Force Medical CenterBeijing 100142China

BACKGROUND Simulated microgravity environment can lead to gastrointestinal motility *** pathogenesis of gastrointestinal motility disorders is closely related to the stem cell factor(SCF)/c-kit signaling pathway associated with intestinal flora and Cajal stromal ***,intestinal flora can also affect the regulation of SCF/c-kit signaling pathway,thus affecting the expression of Cajal stromal *** cells are the pacemakers of gastrointestinal *** To investigate the effects of Bifidobacterium lactis(***)BLa80 on the intestinal flora of rats in simulated microgravity and on the gastrointestinal motility-related SCF/c-kit *** The internationally recognized tail suspension animal model was used to simulate the microgravity environment,and 30 rats were randomly divided into control group,tail suspension group and drug administration tail suspension group with 10 rats in each group for a total of 28 *** tail group was given *** BLa80 by intragastric administration,and the other two groups were given water intragastric administration,the concentration of intragastric administration was 0.1 g/mL,and each rat was 1 mL/***&eosin staining was used to observe the histopathological changes in each segment of the intestine of each group,and the expression levels of SCF,c-kit,extracellular signal-regulated kinase(ERK)and p-ERK in the gastric antrum of each group were detected by Western blotting and *** fecal flora and mucosal flora of rats in each group were detected by 16S *** Simulated microgravity resulted in severe exfoliation of villi of duodenum,jejunum and ileum in rats,marked damage,increased space between villi,loose arrangement,shortened columnar epithelium of colon,less folds,narrower mucosal thickness,reduced goblet cell number and crypts,and significant improvement after probiotic *** microgravity reduced the expressions of SCF and c-kit,and increased the express

关键词： Simulated microgravity Rat Intestinal flora Gastrointestinal motility Stem cell factor/c-kit signaling pathway

Pretreatment red blood cell distribution width as a predictive marker for postoperative complications after laparoscopic pancreatoduodenectomy

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World Journal of Gastrointestinal Oncology 2025年第1期17卷 143-157页

作者： Xian-Rang Cao Yin-Long xu Jia-Wei Chai Kai Zheng jun-Jie Kong jun Liu Shun-Zhen Zheng Department of Liver Transplantation and Hepatobiliary Surgery Shandong Provincial Hospital Affiliated to Shandong First Medical UniversityJinan 250021Shandong ProvinceChina Department of Breast and Thyroid Surgery Shandong Provincial Maternal and Child Health Care HospitalJinan 250014Shandong ProvinceChina

BACKGROUND Red blood cell distribution width(RDW)is associated with the development and progression of various *** To explore the association between pretreatment RDW and short-term outcomes after laparoscopic pancreatoduodenectomy(LPD).METHODS A total of 804 consecutive patients who underwent LPD at our hospital between March 2017 and November 2021 were retrospectively *** between pretreatment RDW and clinicopathological characteristics and short-term outcomes were *** Patients with higher pretreatment RDW were older,had higher Eastern Cooperative Oncology Group scores and were associated with poorer short-term outcomes than those with normal *** pretreatment RDW was an independent risk factor for postoperative complications(POCs)(hazard ratio=2.973,95%confidence interval:2.032-4.350,Pying patients who were at high risk of developing POCs after LPD.

关键词： Biomarker Laparoscopic pancreatoduodenectomy Postoperative complication Red blood cell distribution width Short-term outcomes