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基于离散元模拟的砂土三维临界状态特征研究

应用基础与工程科学学报 2024年第4期32卷 1124-1139页

作者：蒋成龙许成顺焦爽王晓丽北京工业大学城市与工程安全减灾教育部重点实验室北京100124

对于在室内土工试验很难得到土体临界状态下的颗粒运动、局部孔隙比变化等特征的问题,基于离散元平台,构建了柔性边界条件下的不同初始物理状态的砂土试样的常规三轴数值模型,对不同初始孔隙比的砂土试样的剪切带的演化形成、试样的整... 详细信息

对于在室内土工试验很难得到土体临界状态下的颗粒运动、局部孔隙比变化等特征的问题,基于离散元平台,构建了柔性边界条件下的不同初始物理状态的砂土试样的常规三轴数值模型,对不同初始孔隙比的砂土试样的剪切带的演化形成、试样的整体孔隙比和局部孔隙比的变化规律等细观特征进行对比.数值计算结果表明:相对密实的砂土在剪切过程中更容易形成剪切带;剪切带内部颗粒随着加载发生剧烈转动现象,局部颗粒的流动呈现紊流特征;非剪切带上颗粒转动不明显,流动呈现定向特性;不同初始孔隙比的砂土试样,其剪切带上的临界状态孔隙比和偏应力比与初始孔隙比无关,临界状态特征的组构张量不变量的稳定特性,说明其临界状态存在且唯一.

关键词：砂土临界状态柔性边界剪切带速度矢量场孔隙比的演化组构张量

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统一大市场、技术流动与经济高质量发展

统计学报 2024年第2期5卷 40-52页

作者：彭桥陈双娇天津财经大学统计学院天津300221 河南大学统计学博士后科研流动站河南开封475001

基于2011—2021年我国30个省份的面板数据,对统一大市场、技术流动与经济高质量发展的关系进行探究。结果表明:统一商品市场与要素市场有利于经济高质量发展;统一商品市场与要素市场对欠发达区域经济高质量发展的促进效应具有滞后性,对... 详细信息

基于2011—2021年我国30个省份的面板数据,对统一大市场、技术流动与经济高质量发展的关系进行探究。结果表明:统一商品市场与要素市场有利于经济高质量发展;统一商品市场与要素市场对欠发达区域经济高质量发展的促进效应具有滞后性,对于发达区域的促进效应则没有明显的滞后期;商品市场与要素市场统一有利于促进区域间的技术流动,并存在区域产业结构相似度和数字经济发展的正向调节效应;统一大市场不仅能直接影响相邻区域的经济高质量发展,而且还能通过技术流动的空间溢出效应发挥间接作用。

关键词：统一商品市场统一要素市场技术流动数字经济高质量发展

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基于加权融合的语音表情多模态情感识别方法

计算机仿真 2024年第7期41卷 417-422,428页

作者：焦爽陈光辉中国大唐集团科学技术研究院有限公司中南电力试验研究院河南郑州450000 东南大学信息科学与工程学院江苏南京210096

当前的多模态融合方法未充分利用语音和表情模态之间的互补性,导致多模态情感识别的识别率较低。为解决上述问题,提出了一种基于加权融合的语音表情多模态情感识别方法。方法首先利用语音活动检测(Voice Activation Detection, VAD)算... 详细信息

当前的多模态融合方法未充分利用语音和表情模态之间的互补性,导致多模态情感识别的识别率较低。为解决上述问题,提出了一种基于加权融合的语音表情多模态情感识别方法。方法首先利用语音活动检测(Voice Activation Detection, VAD)算法提取语音关键帧;然后,利用信息熵建模情感产生是一个连续的过程,并提取表情关键帧;其次,为充分利用语音和表情模态之间的互补性,采用语音和表情关键帧对齐技术计算语音和表情权重。这些权重被输进特征融合层进行加权融合,有效地提高多模态情感识别的识别率;最后,在RML、eNTERFACE05和BAUM-1s数据集上的实验结果表明,该上述方法的识别率高于其它基准方法。

关键词：情感识别语音表情加权融合

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浅谈腹型过敏性紫癜

中国蒙医药（蒙） 2024年第8期19卷 38-42页

作者：双骄陈沙娜不详

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新课标背景下体育教师队伍的高质量建设研究

教学与管理 2024年第9期 61-65页

作者：陈双娇汪明春徐苗苗武汉体育学院体育教育学院武汉430079

建设高质量体育教师队伍是时代的需要,是落实立德树人根本任务的需求,也是建设体育强国的基础。通过文献资料法、访谈法、逻辑推理法,结合当前体育教师队伍建设实然情况,对新课标背景下体育教师队伍高质量建设进行分析研究,研究显示:体... 详细信息

建设高质量体育教师队伍是时代的需要,是落实立德树人根本任务的需求,也是建设体育强国的基础。通过文献资料法、访谈法、逻辑推理法,结合当前体育教师队伍建设实然情况,对新课标背景下体育教师队伍高质量建设进行分析研究,研究显示:体育教师专业教学能力不足,专业培训缺失,新兴运动项目师资缺乏;健康知识储备不足,健康教育设计能力有待加强;尊师重教氛围淡化,课程思政落实不足。研究提出:构建开展多元培训体系,优化教师评价以提升体育教师学习主动性;树立新课标理念,打通体育教师聘任通道,增强体育教师综合性能力;营造尊师重教氛围,立师德塑师魂提升体育教师课程思政教育能力是建设高质量体育教师队伍的重要路径。

关键词：新课标体育教师教师队伍高质量建设

Smyd1 is essential for myosin expression and sarcomere organization in craniofacial,extraocular,and cardiac muscles

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Journal of Genetics and Genomics 2021年第3期48卷 208-218页

作者： shuang jiao Rui Xu Shaojun Du Department of Biochemistry and Molecular Biology Institute of Marine and Environmental TechnologyUniversity of Maryland School of MedicineBaltimoreMD 21202USA Key Laboratory of Experimental Marine Biology Center for Ocean Mega-ScienceInstitute of OceanologyChinese Academy of SciencesQingdao 266071China School of Life Sciences Shandong University of TechnologyZibo 255049China

Skeletal and cardiac muscles are striated myofibers that contain highly organized sarcomeres for muscle *** studies revealed that Smyd1,a lysine methyltransferase,plays a key role in sarcomere assembly in heart and trunk skeletal ***,Smyd1 expression and function in craniofacial muscles are not ***,we analyze the developmental expression and function of two smyd1 paralogous genes,smyd1 a and smyd1 b,in craniofacial and cardiac muscles of zebrafish *** data show that loss of smyd1a(smyd1a^(mb5))or smyd1b(smyd1b^(sa15678))has no visible effects on myogenic commitment and expression of myod and myosin heavy-chain m RNA transcripts in craniofacial ***,myosin heavy-chain protein accumulation and sarcomere organization are dramatically reduced in smyd1b^(sa15678) single mutant,and almost completely diminish in smyd1a^(mb5);smyd1b^(sa15678) double mutant,but not in smyd1a^(mb5) *** defects are also observed in cardiac muscles of smyd1b^(sa15678) *** craniofacial and cardiac muscle formation is associated with an upregulation of hsp90α1 and unc45b mRNA expression in smyd1b^(sa15678) and smyd1a^(mb5);smyd1b^(sa15678) ***,our studies indicate that Smyd1b,but not Smyd1a,plays a key role in myosin heavy-chain protein expression and sarcomere organization in craniofacial and cardiac *** of smyd1b results in muscle-specific stress response.

关键词： Smyd1 Myosin Sarcomere Craniofacial muscle Cardiac muscle

腹腔镜与内镜联合治疗对胃肠道肿瘤患者短期创伤程度的评估

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中国现代药物应用 2024年第13期18卷 51-53页

作者：叶双娇谭大成上饶东信第五医院消化内科 334000

目的评估腹腔镜与内镜联合治疗对胃肠道肿瘤患者短期创伤程度。方法抽取胃肠道肿瘤患者68例为观察对象,按随机数字表法分为观察组(n=34)和对照组(n=34)。对照组给予传统开腹手术治疗,观察组给予内镜联合腹腔镜治疗。对比两组患者创伤程... 详细信息

目的评估腹腔镜与内镜联合治疗对胃肠道肿瘤患者短期创伤程度。方法抽取胃肠道肿瘤患者68例为观察对象,按随机数字表法分为观察组(n=34)和对照组(n=34)。对照组给予传统开腹手术治疗,观察组给予内镜联合腹腔镜治疗。对比两组患者创伤程度、炎症因子水平及临床效果。结果观察组患者手术切口长度(2.39±1.02)cm短于对照组的(7.21±1.32)cm,术中出血量(34.96±5.96)ml少于对照组的(65.13±5.12)ml,术后1 d视觉模拟评分法(VAS)评分(3.12±1.21)分较对照组的(4.96±1.01)分更低(P<0.05)。观察组患者复发率6.25%、并发症发生率2.94%较对照组的28.57%、17.65%更低(P<0.05)。结论相较于传统开腹手术,腹腔镜联合内镜应用于胃肠道肿瘤的治疗中减轻了手术对机体的短期创伤,患者应激水平低,免疫抑制轻,救治安全性更高。

关键词：胃肠道肿瘤腹腔镜内镜短期创伤程度临床效果

Multiple Isoforms of Olive Flounder (Paralichthys olivaceus) Pax3a and Pax3b Display Differential Regulations on Myogenic Differentiation

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Journal of Ocean University of China 2022年第5期21卷 1295-1306页

作者： jiao shuang TAN Xungang YOU Feng PANG Qiuxiang Anti-Aging&Regenerative Medicine Research Institution School of Life Sciences and MedicineShandong University of TechnologyZibo 255000China Laboratory of Developmental and Evolutionary Biology School of Life Sciences and MedicineShandong University of TechnologyZibo 255000China CAS and Shandong Province Key Laboratory of Experimental Marine Biology Center for Ocean Mega-ScienceInstitute of OceanologyChinese Academy of SciencesQingdao 266071China Laboratory for Marine Biology and Biotechnology Pilot National Laboratory for Marine Science and Technology(Qingdao)Qingdao 266237China

Paired box 3(Pax3)is a critical upstream regulator of the onset of *** have previously identified two spliced isoforms of pax3a(pax3a-1 and pax3a-2)and three spliced isoforms of pax3b(pax3b-1,pax3b-2,and pax3b-3)in olive flounder,but their roles in myogenesis are *** this study,we investigated their cellular localization,transcriptional activity on myod gene regulation,and roles in *** Pax3a and Pax3b isoforms revealed various subcellular localizations,which were related to their corresponding protein ***3a-1,Pax3a-2,and Pax3b-1 promoted the transcriptional activity of myod to dif-ferent degrees,whereas Pax3b-2 and Pax3b-3 had a slight inhibitory or no *** pairwise interaction analysis demonstrated the synergistic effect of Pax3b-1 and Pax3b-3 on myod transcriptional *** overexpression of different pax3a and pax3b isoforms differentially altered the spatial expression patterns of myod and differentially regulated the expression levels of their target genes(myod,myf5,and c-met)in zebrafish embryonic *** addition,the different flounder myod promoter-driven pax3a/3b isoform expression vectors were successfully introduced into the skeletal muscles of juvenile flounder by ***-ever,none of them could change the mRNA expression levels of mstn,myf5,myod,myogenin,pax7a,and pax7b in the electroporated *** results suggest that different Pax3a and Pax3b isoforms may precisely and collaboratively regulate embryonic myogenesis,but their roles in juvenile myogenesis are uncertain.

关键词： Pax3a Pax3b isoforms myod myogenesis

Recyclable adsorbent of BiFeO_3/Carbon for purifying industrial dye wastewater via photocatalytic reproducible

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Green Energy & Environment 2019年第1期4卷 66-74页

作者： shuang jiao Yiming Zhao Chensha Li Binsong Wang Yang Qu Key Laboratory of Functional Inorganic Materials Chemistry (Heilongjiang University) Ministry of Education School of Chemistry and Materials ScienceInternational Joint Research Center for Catalytic Technology Key Laboratory of Functional Inorganic Materials Chemistry(Heilongjiang University) Ministry of Education School of Chemistry and Materials ScienceInternational Joint Research Center for Catalytic Technology

It is essential to prepare highly-efficiency reproducible adsorbent for purifying industrial dye wastewater. In this work, biscuit with a layered porous structure as a template is applied to prepare a photocatalytic recyclable adsorbent of BiFeO3/Carbon nanocomposites for purifying simulative industrial dye wastewater. It is found that the structure of the prepared BiFeO3/Carbon nanocomposite is related to the natural structure of the biscuit, annealing temperatures and immersing times, demonstrated by XRD, TEM, UV-Vis and adsorptive activities. Kinetics data shows that the adsorption rate of the adsorbent to the dye is rapid and fitted well with the pseudo-second-order model, that more than 80% of dyes can be removed in the beginning 30 min. The adsorption isotherm can be perfectly described by the Langmuir model as well. It can be seen from the adsorption data that the adsorption performance can reach over 90% at pH ? 2–12, which can imply its universal utilization. The prepared BiFeO_3/Carbon nanocomposites have also displayed excellent capacities(over 90% within 30 min) for adsorption of seven different dyes and their mixed one. According to the five times photocatalytic reproducible experiments, it is proved that BiFeO_3/Carbon nanocomposites show the excellent stability and reproduction for purifying simulative industrial dyes, even the sample have been placed for one year. These research results indicate that the adsorbent BiFeO_3/Carbon can be a suitable material used in treating industrial dye wastewater potentially.

关键词： Reproducible adsorbent BiFeO3/Carbon nanocomposites Photocatalysis Purifying industrial dye wastewater Pseudo-second-order model