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Atmospheric and Oceanic Science Letters 2023年第5期16卷 24-30页

作者： Xueyang Chen shuanglin li Chao Zhang Department of Atmospheric Science School of Environmental StudiesChina University of Geosciences Institute of Atmospheric Physics/Climate Change Research Center Chinese Academy of Sciences College of Earth and Planetary Sciences University of the Chinese Academy of Sciences

本文基于多种再分析资料,研究了中部型(CP)和东部型(EP) El Ni?o事件对南半球春季(9-11月)西南极和南极半岛降水的不同影响.结果显示,EP和CP事件对阿蒙森-别林斯高晋海的降水具有相似影响,而对威德尔海,特别是南极半岛的降水影响相反.由... 详细信息

本文基于多种再分析资料,研究了中部型(CP)和东部型(EP) El Ni?o事件对南半球春季(9-11月)西南极和南极半岛降水的不同影响.结果显示,EP和CP事件对阿蒙森-别林斯高晋海的降水具有相似影响,而对威德尔海,特别是南极半岛的降水影响相反.由于EP事件激发两支罗斯贝波列,分别引起罗斯-阿蒙森-别林斯高森海和威德尔海上空的异常反气旋和气旋,从而导致别林斯高晋-威德尔海和南极半岛受到干冷的异常偏南风影响,降水减少.然而,CP事件仅激发一支相对较弱且偏西的罗斯贝波列,分别引起罗斯-阿蒙森海和别林斯高晋-威德尔海上空的异常反气旋和气旋,从而导致南极半岛以西(东)受异常偏南(北)风影响,降水减少(增加).

关键词：降水南极半岛厄尔尼诺类型热带加热罗斯贝波列

基于ABAQUS的新型密拼叠合板承载能力比较研究

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河北工业科技 2024年第1期41卷 44-52页

作者：韩双林李佳蔚孙悦平蒋录珍石家庄一建建设集团有限公司河北石家庄050047 河北科技大学建筑工程学院河北石家庄050018

为优化密拼式叠合板侧向拼缝处的连接构造,设计一种在拼缝处设置抗剪键槽的密拼式钢筋桁架叠合楼板。利用ABAQUS有限元软件对7个密拼叠合楼板进行四点弯曲模拟研究,针对普通密拼式叠合板与不同形式的抗剪键槽密拼式叠合板的承载能力进... 详细信息

为优化密拼式叠合板侧向拼缝处的连接构造,设计一种在拼缝处设置抗剪键槽的密拼式钢筋桁架叠合楼板。利用ABAQUS有限元软件对7个密拼叠合楼板进行四点弯曲模拟研究,针对普通密拼式叠合板与不同形式的抗剪键槽密拼式叠合板的承载能力进行对比分析。结果表明:新型密拼式叠合楼板的承载能力较好,相较于普通密拼式叠合板提升了17%左右;当达到极限荷载时,其内置钢筋所受应力明显低于普通密拼式叠合板。通过对不同开槽形式叠合板的受弯性能进行对比分析,明确了新型抗剪键槽叠合板拼缝处设计的合理性,为新型拼缝叠合楼板在工程实践中的应用提供了理论依据。

关键词：混凝土与钢筋混凝土结构装配式密拼叠合板凹槽拼缝连接 ABAQUS

基于响应面法的硝酸氧化耦合生物降解预处理褐煤提取腐植酸工艺条件优化研究

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煤炭转化 2024年第4期47卷 32-42页

作者：梁丹丹梁海霞崔丽萍李佳勇王双林刘雨鹤李欣欣太原理工大学环境科学与工程学院山西晋中030600 太原理工大学生物医学工程学院山西晋中030600 太原理工大学生态学学院山西晋中030600 山西新华防化装备研究院有限公司太原030008

从褐煤中提取腐植酸是实现低阶煤高值利用的有效途径,为提高矿源腐植酸提取率和生物活性,采用青霉菌(Penicillium pimiteouiense PPLL2205)高效降解转化褐煤,探究硝酸氧化耦合生物降解预处理对煤基腐植酸提取率的影响,结合元素分析、紫... 详细信息

从褐煤中提取腐植酸是实现低阶煤高值利用的有效途径,为提高矿源腐植酸提取率和生物活性,采用青霉菌(Penicillium pimiteouiense PPLL2205)高效降解转化褐煤,探究硝酸氧化耦合生物降解预处理对煤基腐植酸提取率的影响,结合元素分析、紫外-可见光谱和红外光谱分析表征其生物活性官能团。结果表明:经单因素和Plackett-Burman实验筛选得到显著影响褐煤腐植酸提取率的因素为硝酸浓度、降解温度和时间;通过Box-Behnken实验优化得硝酸氧化耦合生物降解预处理褐煤的最佳工艺条件为用5 mol/L硝酸氧化粒度为0.125 mm的褐煤,将氧化煤按1 g∶100 mL的固液比装载于接种有1.5%PPLL2205菌株的培养液中,调节pH为7,在温度为30℃、转速为230 r/min下降解15 d,再经碱溶酸提,此条件下腐植酸的提取率高达87.162%;与仅用硝酸氧化处理相比,硝酸氧化耦合生物降解预处理褐煤后提取的腐植酸含有更多的含氧官能团,具有更低的芳香度和更小的相对分子质量,在提高产率的同时增强了矿源腐植酸的生物活性。

关键词：褐煤青霉菌腐植酸氧化改性耦合生物降解响应面

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Transcriptome Analysis Reveals New Insights into the Respiration Metabolism Mechanism of Different Feeding Rations of Sea Cucumber(Apostichopus japonicus)

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Journal of Ocean University of China 2023年第6期22卷 1621-1634页

作者： MEI Yaoping HOU Zhishuai GAO Qinfeng DONG shuanglin li Xueqi XU Yuling Key Laboratory of Mariculture Ministry of EducationOcean University of ChinaQingdao 266003China Function Laboratory for Marine Fisheries Science and Food Production Processes Qingdao National Laboratory for Marine Science and TechnologyQingdao 266235China

Sea cucumber(Apostichopus japonicus)is an excellent model for investigating effects of bottom-dwellers on carbon mig-ration and transformation.However,the molecular mechanism of respiratory metabolism process variation caused by feeding rations is poorly understood.In this study,treatment groups set as 1%(about 0.63g),3%,and 7%of total body weight(named F1,F3 and F7 groups respectively).The potential molecular mechanisms behind the functions of respiratory tree and body wall were investigated by RNA-Seq.A total of 52411 expressed genes were identified from 89342 expressed transcripts.The results showed 759,254 and 334 genes were up-regulated,and 334,445 and 992 genes were down-regulated in respiratory tree of F1 vs.F3,F1 vs.F7 and F3 vs.F7,respectively.Meanwhile,2070,1601 and 896 genes were up-regulated,and 1303,1337 and 1144 genes were down-regulated in body wall between F1 vs.F3,F1 vs.F7 and F3 vs.F7,respectively.Differentially expressed genes were enriched in salivary secretion and ECM-receptor interaction pathways in respiratory tree,and in various types of N-glycan biosynthesis,ribosome and sphingolipid metabolism pathways in body wall.These results suggested respiratory tree and body wall were involved in activation of respiratory metabolisms in response to different feeding rations.Our research provided valuable knowledge for physiological differences in res-piratory metabolism.

关键词： transcriptomics Apostichopus japonicus feeding ration respiration metabolism

Distinct impacts of two kinds of El Nino on precipitation over the Antarctic Peninsula and West Antarctica in austral spring

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大气和海洋科学快报:英文版 2023年第5期16卷 22-28页

作者： Xueyang Chen shuanglin li Chao Zhang Department of Atmospheric Science School of Environmental StudiesChina University of GeosciencesWuhanChina Institute of Atmospheric Physics/Climate Change Research Center Chinese Academy of SciencesBejingChina College of Earth and Planetary Sciences University of the Chinese Academy of SciencesBejingChina

本文基于多种再分析资料,研究了中部型(CP)和东部型(EP)ElNino事件对南半球春季(9-11月)西南极和南极半岛降水的不同影响.结果显示,EP和CP事件对阿蒙森-别林斯高晋海的降水具有相似影响,而对威德尔海,特别是南极半岛的降水影响相反.由... 详细信息

本文基于多种再分析资料,研究了中部型(CP)和东部型(EP)ElNino事件对南半球春季(9-11月)西南极和南极半岛降水的不同影响.结果显示,EP和CP事件对阿蒙森-别林斯高晋海的降水具有相似影响,而对威德尔海,特别是南极半岛的降水影响相反.由于EP事件激发两支罗斯贝波列,分别引起罗斯-阿蒙森-别林斯高森海和威德尔海上空的异常反气旋和气旋,从而导致别林斯高晋-威德尔海和南极半岛受到干冷的异常偏南风影响,降水减少.然而,CP事件仅激发一支相对较弱且偏西的罗斯贝波列,分别引起罗斯-阿蒙森海和别林斯高晋-威德尔海上空的异常反气旋和气旋,从而导致南极半岛以西(东)受异常偏南(北)风影响,降水减少(增加).

关键词：降水南极半岛厄尔尼诺类型热带加热罗斯贝波列

Tetrahedral framework nucleic acid carrying angiogenic peptide prevents bisphosphonate-related osteonecrosis of the jaw by promoting angiogenesis

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International Journal of Oral Science 2022年第2期14卷 201-211页

作者： Dan Zhao Dexuan Xiao Mengting liu Jiajie li shuanglin Peng Qing He Yue Sun Jingang Xiao Yunfeng lin State Key Laboratory of Oral Diseases&National Clinical Research Center for Oral Diseases&Department of Oral and Maxillofacial Surgery West China Hospital of StomatologySichuan UniversityChengduChina Department of Oral and Maxillofacial Surgery The Affiliated Stomatology Hospital of Southwest Medical UniversityLuzhouChina

The significant clinical feature of bisphosphonate-related osteonecrosis of the jaw(BRONJ)is the exposure of the necrotic jaw.Other clinical manifestations include jaw pain,swelling,abscess,and skin fistula,which seriously affect the patients’life,and there is no radical cure.Thus,new methods need to be found to prevent the occurrence of BRONJ.Here,a novel nanoparticle,t FNA-KLT,was successfully synthesized by us,in which the nanoparticle tetrahedral framework nucleic acid(tFNA)was used for carrying angiogenic peptide,KLT,and then further enhanced angiogenesis.TFNA-KLT possessed the same characteristics as tFNA,such as simple synthesis,stable structure,and good biocompatibility.Meanwhile,tFNA enhanced the stability of KLT and carried more KLT to interact with endothelial cells.First,it was confirmed that tFNA-KLT had the superior angiogenic ability to tFNA and KLT both in vitro and in vivo.Then we apply tFNA-KLT to the prevention of BRONJ.The results showed that tFNA-KLT can effectively prevent the occurrence of BRONJ by accelerating angiogenesis.In summary,the prepared novel nanoparticle,tFNA-KLT,was firstly synthesized by us.It was also firstly confirmed by us that tFNA-KLT significantly enhanced angiogenesis and can effectively prevent the occurrence of BRONJ by accelerating angiogenesis,thus providing a new avenue for the prevention of BRONJ and a new choice for therapeutic angiogenesis.

关键词： angiogenesis prevention swelling

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高温声学检测技术的发展、应用与挑战

振动．测试与诊断 2024年第1期44卷 1-10,193页

作者：卢超郭伟石文泽陈振华胡博陈巍巍李秋锋陈尧刘远郭双林朱颖张萍南昌航空大学无损检测技术教育部重点实验室南昌330063

以我国航空航天、钢铁冶金、特种设备等领域的高温声学无损检测技术研究与应用为主线,分析了高温声学检测技术在促进先进高温材料制备与研发、钢铁冶金行业绿色低碳生产和产业升级、高温压力管道安全运行与维护等方面的巨大需求。介绍... 详细信息

以我国航空航天、钢铁冶金、特种设备等领域的高温声学无损检测技术研究与应用为主线,分析了高温声学检测技术在促进先进高温材料制备与研发、钢铁冶金行业绿色低碳生产和产业升级、高温压力管道安全运行与维护等方面的巨大需求。介绍了国内外在高温声学检测的技术方法和仪器研制等方面取得的进展,分析了压电超声、电磁超声、激光超声、激光电磁超声等技术在高温无损检测应用方面存在的优缺点和应用场景,总结了高温声学检测技术面临的机遇与挑战。

关键词：声学检测高温无损检测压电超声电磁超声激光超声

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井下硐室柴油蒸气泄漏扩散规律

煤矿安全 2024年第5期55卷 140-150页

作者：李世豪白纪成宋双林姜文忠梁运涛林琦煤炭科学研究总院北京100013 中煤科工集团沈阳研究院有限公司辽宁抚顺113122 煤矿安全技术国家重点实验室辽宁抚顺113122 平顶山天安煤业股份有限公司河南平顶山467000 安徽工业大学能源与环境学院安徽马鞍山243002

随着柴油单轨吊和无轨胶轮车等辅助运输装置在煤矿井下的推广应用,在井下运输和加注柴油的频率越来越高,运输和加注柴油过程中泄漏的柴油和挥发的柴油蒸气会污染井下空气环境,严重时还可能造成燃烧与爆炸事故。针对煤矿井下柴油运输及... 详细信息

随着柴油单轨吊和无轨胶轮车等辅助运输装置在煤矿井下的推广应用,在井下运输和加注柴油的频率越来越高,运输和加注柴油过程中泄漏的柴油和挥发的柴油蒸气会污染井下空气环境,严重时还可能造成燃烧与爆炸事故。针对煤矿井下柴油运输及加注过程的环境特点,构建了井下流态环境泄漏柴油蒸发扩散模型,建立了基于风速和蒸发速率的柴油蒸气体积分数峰值预测方法,研究了不同环境风速及柴油蒸发速率条件下的柴油蒸气体积分数分布规律,提出了煤矿井下柴油蒸气-瓦斯混合环境防火防爆措施。结果表明:在井下流态环境中,柴油蒸气扩散呈现出明显的沉降、分层及分段特性,风流对柴油蒸气扩散具有促进作用;当柴油泄漏后20s时,蒸气可扩散至距泄漏点下风侧10 m;当柴油泄漏后40 s时,蒸气可扩散至距泄漏点下风侧15 m;当柴油泄漏后70 s时,硐室中各监测点柴油蒸气体积分数达到峰值并趋于稳定;柴油蒸气体积分数峰值点位于泄漏点下风侧1 m处;可通过采用降低硐室环境温度、减少泄漏面积和增加风速等措施防止柴油蒸气-瓦斯混合气体燃烧和爆炸。

关键词：煤矿开采加油硐室柴油蒸气泄露扩散规律体积分数峰值预测

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川西中江地区须二气藏富集规律研究

化工管理 2024年第17期 69-71页

作者：李小佳邓双林李波杨森王有江杨燕霞中国石化西南油气分公司采气三厂四川德阳618000

川西须家河组二段资源量丰富,具有较大的勘探开发潜力。文章以川西中江地区须二气藏特征为基础,结合前人的研究成果,总结出须二气藏的富集规律。古构造高部位是气井高产的前提,裂缝是气井获得中、高产的关键,相对优质储层是气井稳产的基... 详细信息

川西须家河组二段资源量丰富,具有较大的勘探开发潜力。文章以川西中江地区须二气藏特征为基础,结合前人的研究成果,总结出须二气藏的富集规律。古构造高部位是气井高产的前提,裂缝是气井获得中、高产的关键,相对优质储层是气井稳产的基础,断裂是气井高产的重要因素,建立了富集模式,早期近源低效充注,中期远、近源多向充注,致密、构造交互调整,晚期断裂调整富集。

关键词：中江地区须家河组二段富集规律裂缝储层

Tetrahedral framework nucleic acids regulate osteogenic differentiation potential of osteoporotic adipose-derived stem cells

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Chinese Chemical Letters 2022年第5期33卷 2517-2521页

作者： Tianyu Chen Dexuan Xiao Yanjing li Sirong Shi Xiao Yang shuanglin Peng Bin Guo Xiaoxiao Cai State Key Laboratory of Oral Diseases National Clinical Research Center for Oral DiseasesWest China Hospital of StomatologySichuan UniversityChengdu 610041China Department of Stomatology First Medical Center of Chinese PLA General HospitalBeijing 100853China

Osteoporosis(OP)is a noncommunicable bone disease caused by a shift in the balance between os-teoblasts and osteoclasts,and can severely affect the health of elderly persons.Autologous stem-cell transplantation can improve reduced bone density and weakened fracture healing abilities in patients with OP.However,OP can adversely affect the osteogenesis and proliferation abilities of autologous adipose-derived stem cells(ASCs).Therefore,an effective drug is required to facilitate autologous ASCs to recover their osteogenic and proliferative potential.Tetrahedral framework nucleic acid(tFNA)is a new type of nanomaterial that has ability to regulate the biological behavior of cells effectively and en-hance the bioactivity of stem cells.In this study,we examine the effects of tFNAs on the osteogenic differentiation and proliferation abilities of ASCs in rats with OP.The results indicate that the 250 nmol/L tFNAs can considerably increase the expression of osteogenesis-related markers,effectively promote the proliferation and osteogenic differentiation of osteoporotic ASCs(OP-ASCs),and help them to regain their osteogenic and proliferative potential.In short,tFNAs can enable OP-ACSs to recover their osteogenic po-tential and promote their proliferation and,therefore,can play a key regulatory role in autologous ASC transplantation.

关键词： Osteoporosis Tetrahedral framework nucleic acid Adipose-derived stem cell Autologous stem-cell transplantation Osteogenic differentiation