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Hydration Characteristics and Microstructure of Alkali-Activated Slag Concrete: A Review

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Engineering 2023年第1期20卷 162-179页

作者： Qiang Fu Mengxin Bu Zhaorui Zhang wenrui xu Qiang Yuan Ditao Niu School of Civil Engineering Xi’an University of Architecture and TechnologyXi’an 710055China State Key Laboratory of Green Building in Western China Xi’an University of Architecture and TechnologyXi’an 710055China School of Civil Engineering Central South UniversityChangsha 410075China

Alkali-activated slag concrete (AASC) is a new green building material. The amount of CO_(2) produced by AASC is 1/5th of that produced by ordinary Portland cement concrete (OPCC). In addition, AASC promotes the reuse of slag and other wastes and saves resources. Furthermore, the scope of use of slag has been expanded. The progress of the research on the hydration characteristics, microstructure, interfacial transition zone, and pore structure of AASC based on the relevant literatures was analyzed and summarized in this study. The influences of the slag composition, the type and dosage of the alkali activator, and the curing conditions on the hydration characteristics and the microstructure of the AASC were discussed. Relatively few research results on the microstructure of AASC are available, and the relevant conclusions are not completely consistent. Moreover, there are many constraints on the development of AASC (e.g., complex composition of raw materials of slag, large shrinkage deformation, and low fluidity). Therefore, further research is required.

关键词： Alkali-activated slag concrete Hydration characteristics Pore structure Inter facial transiti on zone Micr ostructure

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基于组合模型的普通高校投入产出效率评价

江苏科技大学学报（自然科学版） 2023年第6期37卷 99-107页

作者：徐文睿江苏科技大学马克思主义学院镇江212100

构建三阶段DEA-FCA组合模型,给出了组合模型的基本原理和应用过程.选取我国31个地区普通高校2011~2020年相关投入产出数据,首先运用三阶段DEA模型测算我国31个地区普通高校研究期内的投入产出效率,然后将测得的纯技术效率值和规模效率... 详细信息

构建三阶段DEA-FCA组合模型,给出了组合模型的基本原理和应用过程.选取我国31个地区普通高校2011~2020年相关投入产出数据,首先运用三阶段DEA模型测算我国31个地区普通高校研究期内的投入产出效率,然后将测得的纯技术效率值和规模效率值作为原始数据进行模糊聚类分析,将我国31个地区普通高校按投入产出效率水平分为4类,最后依据三阶段DEA测算结果及模糊聚类分析结果给出我国31个地区普通高校的投入产出效率优化方向.

关键词：三阶段DEA 模糊聚类分析普通高校效率

寻找脱贫攻坚的集体记忆——来自扶贫干部的考察

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浙江学刊 2023年第5期 137-147页

作者：谢治菊许文睿广州大学公共管理学院广州大学乡村振兴研究院广州510006

脱贫攻坚战的伟大胜利不但让9899万农村贫困人口摆脱绝对贫困,还留下了宝贵的集体记忆,这些集体记忆亟待挖掘、利用与传承。依托课题组对扶贫干部的口述访谈,基于对集体记忆理论的分析发现,符号记忆、情节记忆和价值记忆是脱贫攻坚集体... 详细信息

脱贫攻坚战的伟大胜利不但让9899万农村贫困人口摆脱绝对贫困,还留下了宝贵的集体记忆,这些集体记忆亟待挖掘、利用与传承。依托课题组对扶贫干部的口述访谈,基于对集体记忆理论的分析发现,符号记忆、情节记忆和价值记忆是脱贫攻坚集体记忆的多重面向,这些记忆具有政治认同的催化剂、文化整合的黏合剂和乡村振兴的助燃剂等多维价值,其生成理路源发于个体记忆的唤起,形塑于突生机制的作用,达致记忆认同的许可。可从形式再生产、内容再生产、意义再生产三个角度对集体记忆的传承路径进行探讨。

关键词：集体记忆脱贫攻坚帮扶干部口述历史乡村振兴

检波点位置偏移原则在准噶尔盆地沙漠区地震采集中的应用

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石油物探 2020年第1期59卷 31-39页

作者：王正军徐文瑞刘飞中国石油集团东方地球物理勘探有限责任公司新疆物探处分公司新疆克拉玛依834000

“避高就低”的检波点位置偏移原则在塔里木盆地大沙漠区提高地震资料分辨率方面取得了效果,但是在准噶尔盆地沙漠区并不完全适用。利用基于实际资料的大数据统计方法对共检波点道集有效频带的能量和信噪比变化关系进行了分析,结合不同... 详细信息

“避高就低”的检波点位置偏移原则在塔里木盆地大沙漠区提高地震资料分辨率方面取得了效果,但是在准噶尔盆地沙漠区并不完全适用。利用基于实际资料的大数据统计方法对共检波点道集有效频带的能量和信噪比变化关系进行了分析,结合不同地表地貌的湿度、压实度、地表植被发育等地表物性的抽样验证,发现沙漠地表物性空间上的差异性与检波器接收响应相关,是造成接收道之间地震反射能量、相位差异的主要因素之一,在局部范围内其影响程度要强于地表高差。为此,提出了“先避虚就实,后避高就低”的检波点位置偏移原则,并应用理论模型模拟的方法论证了不同的检波点位置偏移距离对波场均匀性的影响,分析了检波点位置偏移距离的约束范围。依据地表植被发育程度(颜色)坡度高程的检波点位置选择优先顺序,以地表面元为约束范围在准噶尔盆地沙漠区完成了一条二维宽线采集的检波点位置偏移对比试验,选点偏移的优选检波点后的道集资料和成像剖面目的层反射的高频端均有不同程度的拓宽,验证了该沙漠区检波点位置优选方法对提高有效地震信号分辨率的有效性。

关键词：检波点位置偏移地表物性信噪比偏移距离耦合分辨率接收响应有效频宽

高校专业课“课程思政”建设路径探索——以化学类课程为例

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江苏科技大学学报（社会科学版） 2024年第2期24卷 102-108页

作者：徐文睿江苏科技大学马克思主义学院江苏镇江212003

高校专业课“课程思政”建设是践行立德树人教育使命、培养德才兼备时代新人、深化本科教育教学改革的必然要求。其内涵既应包括“课程思政”的一般内涵,也应包括“课程思政”一般内涵与高校具体专业课本体的融合及教学实践。以化学类... 详细信息

高校专业课“课程思政”建设是践行立德树人教育使命、培养德才兼备时代新人、深化本科教育教学改革的必然要求。其内涵既应包括“课程思政”的一般内涵,也应包括“课程思政”一般内涵与高校具体专业课本体的融合及教学实践。以化学类课程为例,针对当前高校化学类专业课“课程思政”建设所面临的系统协同机制不健全、“课程思政”教学标准不规范、专业课教师课程思政能力不足等关键问题,提出了统合渐进思维下的横向协同、关键多重约束下的课程教学、学习激励导向下的教师培养的优化路径,以期举一反三,促进高校专业课“课程思政”建设不断优化。

关键词：专业课程课程思政思政课程

Chondroitinase ABC combined with Schwann cell transplantation enhances restoration of neural connection and functional recovery following acute and chronic spinal cord injury

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Neural Regeneration Research 2025年第5期20卷 1467-1482页

作者： wenrui Qu Xiangbing Wu Wei Wu Ying Wang Yan Sun Lingxiao Deng Melissa Walker Chen Chen Heqiao Dai Qi Han Ying Ding Yongzhi Xia George Smith Rui Li Nai-Kui Liu Xiao-Ming xu Spinal Cord and Brain Injury Research Group Stark Neurosciences Research InstituteDepartment of Neurological SurgeryIndiana University School of MedicineIndianapolisINUSA Department of Hand Surgery the Second Hospital of Jilin UniversityChangchunJilin ProvinceChina Shriners Hospitals Pediatric Research Center Temple University School of MedicinePhiladelphiaPAUSA Department of Anatomy&Cell Biology Indiana University School of MedicineIndianapolisINUSA

Schwann cell transplantation is considered one of the most promising cell-based therapy to repair injured spinal cord due to its unique growth-promoting and myelin-forming properties.A the Food and Drug Administration-approved Phase I clinical trial has been conducted to evaluate the safety of transplanted human autologous Schwann cells to treat patients with spinal cord injury.A major challenge for Schwann cell transplantation is that grafted Schwann cells are confined within the lesion cavity,and they do not migrate into the host environment due to the inhibitory barrier formed by injury-induced glial scar,thus limiting axonal reentry into the host spinal *** we introduce a combinatorial strategy by suppressing the inhibitory extracellular environment with injection of lentivirus-mediated transfection of chondroitinase ABC gene at the rostral and caudal borders of the lesion site and simultaneously leveraging the repair capacity of transplanted Schwann cells in adult rats following a mid-thoracic contusive spinal cord *** report that when the glial scar was degraded by chondroitinase ABC at the rostral and caudal lesion borders,Schwann cells migrated for considerable distances in both rostral and caudal *** Schwann cell migration led to enhanced axonal regrowth,including the serotonergic and dopaminergic axons originating from supraspinal regions,and promoted recovery of locomotor and urinary bladder ***,the Schwann cell survival and axonal regrowth persisted up to 6 months after the injury,even when treatment was delayed for 3 months to mimic chronic spinal cord *** findings collectively show promising evidence for a combinatorial strategy with chondroitinase ABC and Schwann cells in promoting remodeling and recovery of function following spinal cord injury.

关键词： axonal regrowth bladder function chondroitinase ABC functional recovery glial scar lentivirus migration Schwann cell spinal cord injury transplantation