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Asian Agricultural Research 2024年第3期16卷 18-24页

作者： Zhiguo sun Li GAO Yuanpeng sun guangchao CAO Xinying ZHOU Xiaoqiang LI Hubei University of Science and Technology Xianning 437100China Academy of Plateau Science and Sustainability of People s Government of Qinghai Province&Beijing Normal University Xining 810008China Institute of Vertebrate Paleontology and Paleoanthropology Chinese Academy of SciencesBeijing 100044China

In the new era,there is an urgent need to further promote pairing assistance to Tibet,promote the simultaneous construction of a strong agriculture in Tibet and the China's Mainland,and compose a Chinese-style modernization.Southern Tibet,located in the southeastern part of the Tibet Autonomous Region,includes Shannan City and Nyingchi City,is a region assisted by four provincial partners including Hubei Province.This paper introduces the agricultural environment in southern Tibet,studies its agricultural characteristics,and analyzes the main issues of its pairing assistance.Taking forging the strong consciousness of the Chinese national community as the main line,the paper explores strategies for promoting agricultural high-quality development in southern Tibet through pairing assistance to Tibet from the perspective of agricultural power,and proposes some strategies,such as inheriting agricultural cultural heritage,promoting the upgrading of modern seed industry,enhancing the characteristic advantages of highland barley(naked barley)and animal husbandry industries,and developing edible fungi and cold water fish industries.

关键词： Pairing assistance to Tibet Southern Tibet Shannan City Nyingchi City Agricultural high-quality development Agricultural power

Phase Reconstruction and Microstructure Evolution of Magnesia-carbon Refractories at High Temperatures in Nitrogen

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China's Refractories 2022年第3期31卷 14-23页

作者： YAN Mingwei YANG Yumin TONG Shanghao ZHANG Jiayu sun guangchao LIU Kaiqi State Key Laboratory of Multiphase Complex Systems Institute of Process EngineeringChinese Academy of SciencesBeijing 100190China Nanjing IPE Institute of Green Manufacturing Industry Nanjing 211135China AVIC Tianshui New&High Abrasives Co. Ltd.Tianshui 741024China Luoyang Lirr Functional Materials Co. Ltd.Luoyang 471039China

Magnesia-carbon refractories were prepared using fused magnesia,flake graphite and metal aluminum powder as starting materials,phenolic resin as the binder,heat-treating at 1300-1600℃in nitrogen atmosphere.The phase reconstruction and the microstructure evolution of the obtained magnesia-carbon refractories were analyzed.The formation mechanisms of magnesia crystals with different morphologies by chemical vapor deposition were revealed.The results show that at 1300-1500℃,the non-oxides within the specimens are aluminum carbide(Al_(4)C_(3)),aluminum nitride(AlN)and magnesium aluminum nitride(Mg_(3)Al_(n)N_(n+2),n=2 or 3);at 1600℃,the diffraction characteristic peak intensity of Al_(4)C_(3) and AlN decreases sharply,and sharp diffraction characteristic peaks of nitrogen aluminum carbide(Al_(7)C_(3)N_(3))appear.Mg(g)is produced by the aluminothermic reduction and carbothermal reduction of magnesia.On the surface of the specimens,Mg(g)reacts with oxygen to form MgO whiskers.Inside the specimens,Mg(g)and O_(2)(g)undergo a CVD chemical deposition reaction to form cubic MgO crystals.There is a phase relationship between flake AlN and flake Mg3AlnNn+2,and they are so associated with each other that the morphology is difficult to distinguish.

关键词： magnesia-carbon refractory phase reconstruction microstructure non-oxide magnesia

Research Progress on Thermal Shock Behavior of Porous Ceramics

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China's Refractories 2022年第1期31卷 24-29页

作者： YAN Mingwei LIU Kaiqi ZHANG Jiayu sun guangchao LI Xiang SI Kaikai State Key Laboratory of Multiphase Complex Systems Institute of Process EngineeringChinese Academy of SciencesBeijing 100019China University of Chinese Academy of Sciences Beijing 100049China

Thermal-mechanical coupling effect causes a large stress within porous ceramics at high temperatures,resulting in strength attenuation and product reliability decline.Thermal shock resistance is one of the key factors to characterize the reliability of ceramic materials under thermal-mechanical coupling effect.It is important to study the thermal shock resistance of the porous ceramics to evaluate their service performance and improve their service life.To better evaluate the effect of the thermal shock resistance on properties of the porous ceramics,the evaluation theories,experimental characterization methods and influencing factors about the thermal shock performance of the porous ceramics were reviewed in this paper,and some future research directions were prospected.

关键词： porous ceramics thermal-mechanical coupling thermal shock resistance evaluation theory influence factor

锁定钢板联合空心螺钉垂直加压治疗SandersⅡ型和Ⅲ型跟骨骨折

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中国修复重建外科杂志 2024年第4期38卷 432-437页

作者：张洋赵永杰杜瑞刘颖孙广超滨州医学院附属医院足踝外科山东滨州256603

目的探讨锁定钢板联合空心螺钉垂直加压治疗SandersⅡ、Ⅲ型跟骨骨折的临床效果。方法回顾分析2019年3月—2022年4月收治且符合选择标准的128例SandersⅡ、Ⅲ型跟骨骨折患者临床资料。其中65例采用锁定钢板联合空心螺钉垂直加压治疗(研... 详细信息

目的探讨锁定钢板联合空心螺钉垂直加压治疗SandersⅡ、Ⅲ型跟骨骨折的临床效果。方法回顾分析2019年3月—2022年4月收治且符合选择标准的128例SandersⅡ、Ⅲ型跟骨骨折患者临床资料。其中65例采用锁定钢板联合空心螺钉垂直加压治疗(研究组),63例采用单纯锁定钢板治疗(对照组)。两组患者性别、年龄、骨折侧别及Sanders分型、致伤原因、受伤至手术时间等基线资料比较差异均无统计学意义(P>0.05)。记录并比较两组患者手术时间、术中出血量、住院时间、骨折愈合时间;术前及术后12个月采用美国矫形足踝协会(AOFAS)评分(包括总分、疼痛评分、功能评分、力线评分)评价患者足部功能恢复情况,并于X线片上测量跟骨宽度、跟骨高度、跟骨长度、Böhler角、Gissane角等影像学指标。结果所有患者均随访至术后12个月。两组患者手术时间、术中出血量、住院时间和骨折愈合时间比较差异均无统计学意义(P>0.05)。研究组和对照组分别出现1例和2例切口愈合不良。术后12个月,两组间跟骨长度、跟骨高度、Gissane角及Böhler角手术前后差值比较,差异无统计学意义(P>0.05);但研究组跟骨宽度手术前后差值显著高于对照组(P0.05)。结论与单纯锁定钢板固定相比,锁定钢板联合空心螺钉垂直加压治疗SandersⅡ、Ⅲ型跟骨骨折,可以更加有效地改善跟骨距下关节面宽度,避免腓骨长短肌撞击,减轻患者疼痛,增加距下关节活动度,临床效果较好。

关键词：跟骨骨折锁定钢板空心螺钉内固定

Processing and Properties of Flexible Hot Gas Sealing Materials for Ceramic Membrane

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China's Refractories 2018年第4期27卷 31-40页

作者： sun guangchao LIU Kaiqi LIU Qingzhu SI Kaikai State Key Laboratory of Multiphase Complex Systems Institute of Process EngineeringChinese Academy of Sciences

Ceramic membranes are effective to reduce PM2.5 emission when used for hot flue gas filtration.The properties of the sealing material play a decisive role infiltration efficiency.However,there are few studies on sealing materials for hot flue gas filtration above 700 ℃.This investigation was performed to develop flexible sealing materials which can be used for a long time at high temperatures.In order to obtain sufficient mechanical strength and continuous flexibility,three kinds of binders were selected as coating binders.The sealing materials based on high silica fiber fabric and aluminum silicate fiber fabric were successfully prepared.The effect of aging on mechanical properties and microstructural characteristics of the composites subjected to coating had been investigated by XRD,SEM and EDS.The results show that waterborne polyurethane (WPU) is a suitable coating binder for the sealing materials,which can be used for a long time at 1 000 ℃ and 700 ℃,respectively,without significant decrease in strength.However,the other two binders,aluminum dihydrogen phosphate and aluminum chromium phosphate will weaken the flexibility,resulting in frangibility and reducing sealing performance.The developed composites possess required thermo-stability and desired mechanical strength as flexible sealing materials,indicating their strong application possibility in hot flue gas filtration.

关键词： hot flue gas sealing materials binder ceramic membrane filtration

LYQJ40 t-18 m架桥机抗风稳定性能研究

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交通科学与工程 2024年第2期40卷 99-107页

作者：孙博文张广超王飞中化学建设投资集团有限公司北京102300

为探究海域风荷载对架桥机抗风稳定性的影响,以采用LYQJ40 t-18 m架桥机安装预制纵横梁的某海域项目为依托,采用谐波合成法模拟风速时程,利用MATLAB软件基于Kaimal谱生成脉动风场,再利用有限元软件对架桥机在最大悬臂工况下的静风荷载... 详细信息

为探究海域风荷载对架桥机抗风稳定性的影响,以采用LYQJ40 t-18 m架桥机安装预制纵横梁的某海域项目为依托,采用谐波合成法模拟风速时程,利用MATLAB软件基于Kaimal谱生成脉动风场,再利用有限元软件对架桥机在最大悬臂工况下的静风荷载、脉动风荷载响应进行了计算,分析架桥机的主梁抗倾覆稳定性。计算结果表明:在静风荷载、脉动横向及竖向风荷载作用下,架桥机主梁的最大应力分别为-132.5、-166.9、-171.2 MPa,均小于许用应力(176 MPa),架桥机支点的反力均为正值,没有支座脱空风险,且抗倾覆系数K>1.5,架桥机不会发生倾覆失稳现象。因此,架桥机在海域风荷载作用下具有良好的抗风稳定性,可保障施工安全。

关键词：架桥机抗倾覆风荷载抗风稳定性

温度与荷载联合作用下能源锚杆的热力响应特性数值模拟研究

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三峡大学学报（自然科学版） 2024年第3期46卷 57-63页

作者：李伟强孔纲强孙广超陈玉许晓亮三峡库区地质灾害教育部重点实验室(三峡大学) 湖北宜昌443002 河海大学岩土力学与堤坝工程教育部重点实验室南京210024 深圳市龙岗区建筑工务署广东深圳518100

能源锚杆是一种由地源热泵技术与支护锚杆相结合的建筑节能减碳新技术.然而,目前针对温度影响下锚杆的热力响应机理尚不清楚.基于多场耦合数值模拟方法,探讨温度、锚杆线膨胀系数、锚杆直径、土体导热系数及荷载等因素对能源锚杆热-力... 详细信息

能源锚杆是一种由地源热泵技术与支护锚杆相结合的建筑节能减碳新技术.然而,目前针对温度影响下锚杆的热力响应机理尚不清楚.基于多场耦合数值模拟方法,探讨温度、锚杆线膨胀系数、锚杆直径、土体导热系数及荷载等因素对能源锚杆热-力特性的影响.研究结果表明:常温锚杆受拉时,锚头位移随荷载的增大而增加;温度下降15℃时,锚头平均位移较常温锚杆降低-1.34 mm(约为锚杆直径的1.0%);温度上升15℃时,锚头平均位移较常温锚杆增加0.89mm(约为锚杆直径的0.68%);换热过程中,锚杆温度的升高会引起杆体轴力的减小;在同一加热温度和荷载条件下,锚头位移随着锚杆的线膨胀系数增大而增大,锚杆轴力随着锚杆的线膨胀系数增大而减小;锚杆直径的增大会导致锚头位移的减小.试验结果对能源锚杆的设计和施工提供了一定的参考和依据.

关键词：能源锚杆热力响应数值模拟多场耦合

Porous SiC Prepared Using Fine α-Al2O3 and SiC Powders as Sintering Additives

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China's Refractories 2019年第2期28卷 31-36页

作者： LIU Jiadong PENG Zhijian LIU Qingzhu sun guangchao LIU Kaiqi School of Engineering and Technology China University of GeosciencesBeijing 100083China State Key Laboratory of Multi-phase Complex Systems Institute of Process EngineeringChinese Academy of SciencesBeijing 100190China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of SciencesBeijing 100049China

A reaction bonding technique and a method of layer coating were developed to fabricate porous SiC.The green body was prepared using 250.0μm SiC particles as the raw material,fineα-Al2O3 and SiC powders with mass ratio of 2.5:1as sintering additives,65.2μm graphite as the pore-forming agent and polyvinyl alcohol(PVA)as the binder.The micro powders were coated on the surface of coarse SiC particles.After sintering,fine SiC particles were oxidized to silica(SiO2)then transforming into cristobalite,which finally reacted withα-Al2O3 to produce mullite(3Al2O3·2SiO2).The results show that SiC particles are bonded by the mullite and oxidation-derived SiO2.The apparent porosity of the specimens decreases from 31.3%to 20.5%with the amount of micro powders increasing from 5 mass%to 20 mass%.The bending strength increases at the first stage and then decreases with the increase of fine powders,and the specimen with 10 mass%of fine powders shows relatively high bending strength of 23.5 MPa.

关键词： porous silicon carbide powders reaction bonding porosity bending strength

数字艺术视域下非遗文化的多元化呈现路径探究

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鞋类工艺与设计 2024年第11期4卷 75-77页

作者：孙豪谢昳瑶张晗张广超海南大学海南海口570228

本文从数字艺术与非遗文化相结合的现状出发,分析了数字艺术在非遗保护传承中的独特优势,如创新呈现方式、增强观者体验、促进非遗文化的传播等,进一步探讨了数字艺术在非遗文化多元化呈现中的路径,包括音画互动的应用、非遗文化场景的... 详细信息

本文从数字艺术与非遗文化相结合的现状出发,分析了数字艺术在非遗保护传承中的独特优势,如创新呈现方式、增强观者体验、促进非遗文化的传播等,进一步探讨了数字艺术在非遗文化多元化呈现中的路径,包括音画互动的应用、非遗文化场景的再现、交互体验等。这些路径的实施将有助于实现非遗文化的保护与传承,让非遗文化在数字时代焕发出新的光彩。

关键词：数字艺术非遗文化音画互动

有机物存在时全程自养脱氮工艺启动及微生物群落结构演变

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济南大学学报（自然科学版） 2024年第2期38卷 156-161页

作者：翟方帅孙雅萍司光超张馨文乔壮明魏东济南大学水利与环境学院山东济南250022 山东美泉环保科技有限公司山东济南250101

为了实现全程自养脱氮工艺在处理含有机物废水中的应用,考察有机物存在时全程自养脱氮工艺的启动、运行工况与微生物群落结构演变,通过低溶解氧和生物膜菌种富集的控制策略,缓解有机物对厌氧氨氧化菌的抑制,实现全程自养脱氮工艺启动和... 详细信息

为了实现全程自养脱氮工艺在处理含有机物废水中的应用,考察有机物存在时全程自养脱氮工艺的启动、运行工况与微生物群落结构演变,通过低溶解氧和生物膜菌种富集的控制策略,缓解有机物对厌氧氨氧化菌的抑制,实现全程自养脱氮工艺启动和功能微生物的富集。结果表明,当进水化学需氧量质量浓度为600 mg/L时,全程自养脱氮工艺启动,在反应器稳定运行期间总无机氮去除率最高达到79.46%;三维荧光光谱显示腐殖酸类和富里酸类物质是主要的微生物代谢产物;微生物高通量测序显示厌氧氨氧化菌的优势属Candidatus Kuenenia和Candidatus Brocadia的相对丰度分别从0.02%和0.01%增加到10.47%和4.45%,成功实现厌氧氨氧化菌的富集。

关键词：全程自养脱氮工艺有机物微生物三维荧光光谱高通量测序