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Durable flame-retardant,smoke-suppressant,and thermal-insulating biomass polyurethane foam enabled by a green bio-based system

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Journal of Materials Science & Technology 2023年第31期162卷 179-188页

作者： Xue-lian Chen Fu-Rong Zeng wen-xiong li lin Zhang Cong Deng Yi Tan Ming-Jun Chen Sheng-Chao Huang Bo-wen liu Yu-Zhong Wang Hai-Bo Zhao The Collaborative Innovation Center for Eco-Friendly and Fire-Safety Polymeric Materials(MoE) National Engineering Laboratory of Eco-Friendly Polymeric Materials(Sichuan)College of ChemistryState Key Laboratory of Polymer Materials EngineeringSichuan UniversityChengdu 610064China School of Science Xihua UniversityChengdu 610039China Hubei Three Gorges Laboratory Yichang 443199China

Bio-based polyurethane foam has attracted increasing attentions due to eco-friendliness and fossil feedstock ***,the inherent flammability limits its application in different ***,we demonstrate a green bio-based flame-retardant system to fabricate polyurethane foam composite with durable flame retardancy,smoke suppression,and thermal insulation *** this system,the green bio-based polyol(VED)with good reactivity and compatibility plays a role of flame retardant and EG acts as a synergistic *** a result,the LOI value of foam composite increased to 30.5 vol.%and it achieved a V-0 rating in the UL-94 vertical burning ***,the peak heat release rate(pHRR)and the total smoke production(TSP)decreased by 66.1%and 63.4%,***,the foam composite maintained durable flame retardancy after accelerated thermal aging test,whose thermal-insulating property was maintained even after being treated in high-humidity environment with 85%*** a *** work provides a facile strategy for durable flame retardancy and long-term thermal insulation performance,and creates opportunities for the practical applications of bio-based foam composites.

关键词： Biomass polyurethane foam composite Green bio-based system Durable flame retardancy Smoke suppression Long-term thermal insulation

Determinants of Calcium Infusion Rate During Continuous Veno-venous Hemofiltration with Regional Citrate Anticoagulation in Critically III Patients with Acute Kidney Injury

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Chinese Medical Journal 2016年第14期129卷 1682-1687页

作者： De-lin liu li-Feng Huang wen-liang Ma Qi Ding Yue Han Yue Zheng wen-xiong li DePartment of Critical Care Medicine Beiiing Luhe Hospital Capital Medical University Beijing 101149 China Department of Surgical Intensive Care Unit Beijing Chaoyang Hospital Capital Medical University Beijing 100020 China

Background： It is unclear that how to decide the calcium infusion rate during continuous veno-venous hemofiltration （CVVH） with regional citrate anticoagulation （RCA）. This study aimed to assess the determinants of calcium infusion rate during CVVH with RCA in critically ill patients with acute kidney injury （AKI）. Methods： A total of 18 patients with AKI requiring CVVH were prospectively analyzed. Postdilution CVVH was performed with a fixed blood flow rate of 150 ml/min and a replacement fluid flow rate of 2000 ml/h for each new circuit. The infusion of 4% trisodium citrate was started at a rate of 29.9 mmol/h prefilter and adjusted according to postfilter ionized calcium. The infusion of 10% calcium gluconate was initiated at a rate of 5.5 mmol/h and adjusted according to systemic ionized calcium. The infusion rate of trisodium citrate and calcium gluconate as well as ultrafiltrate flow rate were recorded at 1, 2, 4, 6, 12, and 24 h after starting CVVH respectively. The calcium loss rate by CVVH was also calculated. Results： Fifty-seven sessions of CVVH were performed in 18 AKI patients. The citrate infusion rate, calcium loss rate by CVVH, and calcium infusion rate were 31.30 （interquartile range： 2.70）, 4.60 ± 0.48, and 5.50 ± 0.35 retool/h, respectively. The calcium infusion rate was significantly higher than that of calcium loss rate by CVVH （P 〈 0.01）. The correlation coefficient between the calcium and citrate infusion rates, and calcium infusion and calcium loss rates by CVVH was -0.031 （P 〉 0.05） and 0.932 （P 〈 0.01）, respectively. In addition, calcium infusion rate （mmol/h） = 1.77 ± 0.8 x （calcium loss rate by CVVH, mmol/h）. Conclusions： The calcium infusion rate correlates significantly with the calcium loss rate by CVVH but not with the citrate infusion rate in a fixed blood flow rate during CVVH with RCA.

关键词： Anticoagulation Calcium Citrate Hemofiltration

Predictive value of RIFLE classification on prognosis of critically ill patients with acute kidney injury treated with continuous renal replacement therapy

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中华医学杂志(英文版) 2009年第9期122卷 1020-1025页

作者： wen-xiong li Hui-de Chen Xiao-wen Wang Song Zhao Xiu-kai Chen Yue Zheng Yang Song Department of Surgical Intensive Care Unit Beijing Chaoyang Hospital Capital Medical University Beijing China. lwx7115@***

Backqround The optimal timinq to start continuous renaI replacement therapy （CRRT）for acute l‘idnev iniuⅣ（AKl）13atierlts has not been accuratelv *** recently proposed risk,injurv,fa.1ure,Ioss,end—staqe kidrleisease（RIFLE）criteria for diaqnosis and classification of AKI mav provide a method for clinicians t0 decide the"013timaI timina"for startincl CRRT under uniform *** Dresent study aimed:（1）to analyze the correlation between RIFLE staqeat the start of CRRT and 90-day survival rate after CRRT start,（2）to further investigate the correlation of RlFLE staqewith the maliqnarlt kidney outcome in the 90-day survivors,and（3）to determiiFie the influence of the timing 0f CRRTdefined by RIFLE classification on the 90-day survival and maliclnant kidney outcome in 90-dav sun—*** A retrospective cohort analysis was performed on the data of 106 critically ill Datients wh AKI,treated whCRRT during a 6-year period in a university affiliated surgical intensive care unit（SlCU）.1nformatiorl such as sex,aqe,RIFLE staqe,Sepsis,sepsis-related organ fallure assessment（SOFA）score,number of orqan failures before CRRTCRRT time during SICU,survival,and kidney outcome conditions at 90 days after CRRT start was *** t0their baselire severity of AKI at the start of CRRT the patients were assiqned to three qrouDs accordinq tO the increasirlqseverity of RIFLE staqes:RIFLE-R（risk of renal dvsfunction,R）,RIFLE-l（iniury to the kidrlev,1）and RIFLE.F（fa.1ure ofkidnev function,F）using RIFLE *** maIiclnant kidney outcome was classified as RIFLE—L（Ioss of kidnev furlclionL）or RIFLE-E（end-staqe kidney disease.E）using RlFLE *** correlation between RIFLE stacle and 90—davsurvival rate was arialyzed among these three RlFLE-cateqorized ***,the association between RIFLEstaqe and the maliqnant kidnev outcome（RlFLE-L+RIFLF—E）in the 90-day survivors was *** Fifty-thtee of the overall 106 patients survived to 90 days aft

关键词： RIFLE classification renal replacement therapy acute kidney injury prognosis

从庞德对中国古典诗歌的接受看误读的积极作用

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中国青年政治学院学报 2005年第5期24卷 139-142页

作者：熊文莉中国青年政治学院外语教学与研究中心北京100089

中国古典诗歌对20世纪初在英美诗坛盛极一时的意象派诗歌创作曾产生了深刻影响。以庞德为代表的意象派诗人对中国古典诗歌的接受却是以一种文化误读的形态存在的。对汉字结构、中国诗的格律、诗歌含义等方面产生的误读,成为庞德等意象... 详细信息

中国古典诗歌对20世纪初在英美诗坛盛极一时的意象派诗歌创作曾产生了深刻影响。以庞德为代表的意象派诗人对中国古典诗歌的接受却是以一种文化误读的形态存在的。对汉字结构、中国诗的格律、诗歌含义等方面产生的误读,成为庞德等意象派诗人进行诗歌革新和创作的灵感源泉,并对当时英美意象诗派的形成和繁荣产生了积极作用。

关键词：庞德中国古典诗歌文化误读

The THU-NAOC transient survey: the performance and results from the first year

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Research in Astronomy and Astrophysics 2015年第2期15卷 215-224页

作者： Tian-Meng Zhang Xiao-Feng Wang Jun-Cheng Chen Ju-Jia Zhang li Zhou wen-xiong li Qing liu Jun Mo Kai-Cheng Zhang Xin-Yu Yao Xu-lin Zhao Xu Zhou Jun-Dan Nie Fang Huang Zhao-Ji Jiang Jun Ma ling-Zhi Wang Chao Wu Zhi-Min Zhou Hu Zou li-Fan Wang Key Laboratory of Optical Astronomy National Astronomical Observatories Chinese Academy of Sciences Physics Department and Tsinghua Center for Astrophysics Tsinghua University Yunnan Observatories Chinese Academy of Sciences Key Laboratory for the Structure and Evolution of Celestial Objects Chinese Academy of Sciences University of Chinese Academy of Sciences Purple Mountain Observatory Chinese Academy of Sciences Astronomy Department Beijing Normal University National Astronomical Observatories Chinese Academy of Sciences

The Tsinghua University-National Astronomical Observatories, Chinese Academy of Sciences （NAOC） Transient Survey is an automatic survey that conducts a systematic exploration of optical transients. This project utilizes a 60/90 cm Schmidt telescope at the Xinglong Station of NAOC. This survey repeatedly covers - 1000 square degrees of the northern sky with a cadence of 34 d. With an exposure of 60 s, the survey reaches a limiting unfiltered magnitude of about 19.5 mag, which enables us to discover supernovae in their relatively young stages. We describe the overall performance of our survey during the first year and present some preliminary results.

关键词： supernovae quasars and active galactic nuclei stars

Cloning and Analysis of the Promoter Region of Rat uPA Gene

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Journal of Reproduction and Contraception 2007年第1期18卷 1-10页

作者： Yan liU Jin-wen xiong li-gang CHEN Yong-hong TIAN Cheng-liang xiong i Medical College HuazhongUniversity of Science and Technology Wuhan 430030China

Objective To clone and analyze the promoter sequence of rat urokinase plasminogen activator protein gene. Methods The genomic DNA was extracted from rat testicular tissue. According to urokinase plasminogen activator, the gene sense primer and antisense primer of uPA gene were designed and synthesized, then Touch-Down PCR were performed. After proper purification, the PCR product was sequenced, analyzed with the promoter prediction software and compared with the DNA sequence of rattuas urokinase plasminogen activator. Results The cloned uPA gene was about 1 572 bp in length, which contained a full open-reading frame with 21 bp in length exons, and the upper region of transcriptional start was 1 551 bp in length which was eucaryon transcriptional control area. The 5＇ UTR had a promoter region including a non-responsive TATA-box. Not only the GC-box binding region was found in this gene, but also active protein I （AP1） and SP1 were seen in other regions. Conclusion A 1 572 bp uPA gene fragment （GenBank accession No.X65651） was obtained from rat genomic DNA library, containing eucaryon transcriptional control area with a promoter region, non-conspicuous TATA-box, GC-box and an extron. A non-responsive TATA-box is located at the upper -30 region.

关键词： rat testicular tissue urokinase plasminogen activator Touch-Down PCR promoter region eucaryou transcriptional control area

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水/油/水双重乳液内、外水相间作用能分析

高校化学工程学报 2006年第3期20卷 338-344页

作者：程靖文利雄陈建峰北京化工大学纳米材料先进制备技术与应用科学教育部重点实验室北京100029

通过考察范德华力和静电作用力两个主要因素,建立了一个用以计算双重乳液内、外水相间相互作用能的数学模型。利用此模型,首先计算分析了无吸附层和存在单吸附层时相互作用能的变化趋势,并重点考察了存在两个不同吸附层时此相互作用能... 详细信息

通过考察范德华力和静电作用力两个主要因素,建立了一个用以计算双重乳液内、外水相间相互作用能的数学模型。利用此模型,首先计算分析了无吸附层和存在单吸附层时相互作用能的变化趋势,并重点考察了存在两个不同吸附层时此相互作用能的变化。发现在一定的静电作用条件下,随着两个界面间的间距(D)不同,内外水相间的相互作用也有所不同:(1)当D较大时,如果油相的Hamaker常数(AM-M)介于内、外水相的Hamaker常数(AP-P和AC-C)之间,则内外水相间的相互作用始终为微弱的排斥力;否则为微弱的吸引力。(2)当D很小时,如果AM-M介于内、外两个吸附层的Hamaker常数(AA1-A1和AA2-A2)之间,则内外水相间的相互作用表现为较强的排斥力,有利于系统的稳定;否则为吸引力,不利于系统的稳定。

关键词：双重乳液相互作用能 Hamaker常数范德华力静电力

基于极曲线几何和支持邻域的鱼眼图像立体匹配

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光学精密工程 2016年第8期24卷 2050-2058页

作者：宋涛熊文莉侯培国李海滨陈琛燕山大学工业计算机控制工程河北省重点实验室河北秦皇岛066004 秦皇岛视听机械研究所河北秦皇岛066000

提出了一种基于极曲线几何和变支持邻域的立体匹配算法来解决鱼眼立体视觉中图像变形导致的极曲线求取和匹配代价计算问题。首先,对鱼眼相机进行标定并获取相机的相关参数;针对鱼眼镜头的畸变问题,根据鱼眼镜头的优化投影模型推导出系... 详细信息

提出了一种基于极曲线几何和变支持邻域的立体匹配算法来解决鱼眼立体视觉中图像变形导致的极曲线求取和匹配代价计算问题。首先,对鱼眼相机进行标定并获取相机的相关参数;针对鱼眼镜头的畸变问题,根据鱼眼镜头的优化投影模型推导出系统的极曲线方程,并利用得到的极线方程确定对应点的搜索范围。然后,根据同源像点在左右图像上的位置关系确定各中心像素点的支持邻域,并计算出不同视差条件下该支持邻域在另一幅图像上的对应支持邻域,利用获取的支持邻域计算出各点的匹配代价。最后,利用WTA(Winner Takes All)策略选取最佳匹配点得到最终的匹配结果。基于提出的极曲线和支持邻域对两组鱼眼图像进行了匹配实验并与传统方法进行了实验对比,结果表明:提出的方法的匹配准确度比传统方法分别提高了4.03%和4.64%。实验结果验证了极曲线的应用加快了匹配速度并减少了误匹配;支持邻域的使用使其对匹配代价计算的准确度优于传统方法。该算法满足了鱼眼图像立体匹配对信息获取速度、准确度和数量的要求。

关键词：计算机视觉立体匹配鱼眼图像极曲线几何支持邻域

Differential distribution of PINK1 and Parkin in the primate brain implies distinct roles

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Neural Regeneration Research 2025年第4期20卷 1124-1134页

作者： Yanting liu Wei Huang Jiayi wen Xin xiong Ting Xu Qi Wang Xiusheng Chen Xianxian Zhao Shihua li Xiaojiang li Weili Yang Guangdong Key Laboratory of Non-human Primate Research Key Laboratory of CNS Regeneration(Ministry of Education)Guangdong-Hongkong-Macao CNS Regeneration Institute of Jinan UniversityJinan UniversityGuangzhouGuangdong ProvinceChina

The vast majority of in vitro studies have demonstrated that PINK1 phosphorylates Parkin to work together in mitophagy to protect against neuronal ***,it remains largely unclear how PINK1 and Parkin are expressed in mammalian *** has been difficult to address because of the intrinsically low levels of PINK1 and undetectable levels of phosphorylated Parkin in small *** this issue is critical for elucidating the in vivo roles of PINK1 and ***,we showed that the PINK1 kinase is selectively expressed as a truncated form(PINK1–55)in the primate *** the present study,we used multiple antibodies,including our recently developed monoclonal anti-PINK1,to validate the selective expression of PINK1 in the primate *** found that PINK1 was stably expressed in the monkey brain at postnatal and adulthood stages,which is consistent with the findings that depleting PINK1 can cause neuronal loss in developing and adult monkey ***1 was enriched in the membrane-bound fractionations,whereas Parkin was soluble with a distinguishable *** double staining experiments showed that PINK1 and Parkin did not colocalize under physiological conditions in cultured monkey astrocytes,though they did colocalize on mitochondria when the cells were exposed to mitochondrial *** findings suggest that PINK1 and Parkin may have distinct roles beyond their well-known function in mitophagy during mitochondrial damage.

关键词： neurodegeneration Parkin Parkinson’s disease PINK1 subcellular distribution