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Study on Mechanical Properties and Action Mechanism of Leather Industrial Sludge Aggregate Baking-Free Bricks

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Journal of Renewable Materials 2023年第1期11卷 453-471页

作者： Lei guo Zekun Wang lixia guo Pingping Chen School of Water Conservancy North China University of Water Resources and Electric PowerZhengzhou450046China Henan Water Valley Research Institute Zhengzhou450046China Henan Key Laboratory of Water Environment Simulation and Treatment Zhengzhou450002China

Taking an industrial sludge and its preparation of sludge wrap shell aggregates(WSAs)instead of sand to prepare baking-free brick as the research object,the development law of mechanical properties and the influence mechanism of macro and micro characteristic parameters of the bricks under different sludge and WSAs replacement rates were studied through the macroscopic mechanical properties test,with the help of nuclear magnetic resonance(NMR),transmission electron microscopy-energy spectrum and other testing technology and pores and cracks analysis system(PCAS)software.The results showed that the compressive strength of each sample decreased with the increase of sludge content.When the sludge content was less than 30%,it was mainly affected by the water-binder ratio.When the sludge content was more than 30%,it was mainly affected by the sludge content.At the age of 7 days,with the increase in replacement rate of WSAs,the compressive strength of the S10 and S30 groups was higher than that of the control group.The compressive strength of the S50 experimental group was 30.38 MPa,and the loss of compressive strength was slight compared with the control group.The water absorption rate of the 28 days S100 experimental group increased by 10.71%compared with the control group.When the content of WSAs was less than 50%,the holes above 0.1μm in the brick can be reduced and transformed into smaller holes,with a decreasing trend of the plane porosity of the brick.The microscopic results of the baking-free brick showed that the three-phase system of WSAs-interface transition area-mortar was poorly bonded and delaminated compared with the gravel aggregate-interface transition area-mortar system,and damage was more likely to occur in the WSAs and interface transition area.The above results show that it is feasible to use sludge and WSAs instead of sand for the preparation of baking-free bricks.This technology not only solves the problem of sludge disposal,but also protects the over-exploitation of mineral resources,and the tec

关键词： Sludge wrap shell aggregates baking-free brick interface

山西晋语山阴话“果然”类副词“诚实”与“可可儿”

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语文研究 2024年第1期 61-64,F0003页

作者：郭利霞南开大学汉语言文化学院天津300071

山西晋语山阴话的“诚实”和“可可儿”均为副词,均可表符合预期和不合预期。表符合预期时,“诚实”来自于“确实”义,侧重于言者主观预期的实现,只用于现实的过去事件,“可可儿”来自于“恰巧”义,侧重于客观巧合,既可用于现实的过去事... 详细信息

山西晋语山阴话的“诚实”和“可可儿”均为副词,均可表符合预期和不合预期。表符合预期时,“诚实”来自于“确实”义,侧重于言者主观预期的实现,只用于现实的过去事件,“可可儿”来自于“恰巧”义,侧重于客观巧合,既可用于现实的过去事件,还可用于非现实的假设事件。表不合预期时,“诚实”和“可可儿”都侧重于言者主观预期的落空,只用于现实的过去事件,不过“可可儿”来自于“偏偏”义,“诚实”则是受“可可儿”语境沾染的结果。

关键词：晋语山阴话副词 “果然”义诚实可可儿

Pore Structure Characteristics of Baking-Free Slag-Sludge Bricks and Its Correlations to Mechanical Properties

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Journal of Renewable Materials 2021年第10期9卷 1805-1819页

作者： Lei guo Pingping Chen lixia guo Zhilong Xue Zi Guan Mingru Li School of Water Conservancy North China University of Water Resources and Electric PowerZhengzhou450046China Henan Water Valley Research Institute Zhengzhou450046China Henan Key Laboratory of Water Environment Simulation and Treatment Zhengzhou450002China Henan Water Conservancy Investment Yuyuan Water Ecology Co.Ltd. Pingyu463400China

In order to explore the relationship between the macroscopic properties and pore structure characteristics of baking-free slag-sludge bricks,the compressive strength and water absorption rate using aluminum industrial slag and sludge of different substitution rates were tested.Optical instruments and image analysis software were used to measure the parameters of the pore structure.Specifically,a fractal model was built based on the fractal theory,in which the fractal dimension was used as the characteristic index of the pore structure to analyze the correlation and interaction mechanism between the fractal dimension and the macroscopic mechanical properties.Based on this study,conclusions were drawn as follows:(1)The plane pore structure of baking-free bricks shows good fractal characteristics.With the increase of the aluminum industrial slag content,the fractal dimension becomes smaller and the pore structure develops well;with the increase of the sludge content,the fractal dimension becomes larger and the pore structure becomes worse;(2)As the fractal dimension of the plane pore structure increases,the compressive strength of baking-free bricks falls,and the porosity and water absorption rise;(3)The optimum content of baking-free slag-sludge bricks is aluminum industrial slag 30%and sludge 10%.After 7 days of curing,baking-free bricks boast higher performance,and fully meet the performance requirements of solid concrete bricks(MU40),which can reduce time costs,and enhance enterprise revenue.

关键词： Aluminum industrial slag sludge baking-free brick mechanical property fractal dimension

Effects of Recycled Aggregate Content on Pervious Concrete Performance

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Journal of Renewable Materials 2020年第12期8卷 1711-1727页

作者： Lei guo Zi Guan lixia guo Weiping Shen Zhilong Xue Pingping Chen Mingru Li School of Water Conservancy North China University of Water Resources and Electric PowerZhengzhou450046China Henan Water Valley Research Institute Zhengzhou450046China Henan Key Laboratory of Water Environment Simulation and Treatment Zhengzhou450002China

A recycled aggregate(RA)was prepared by crushing and sieving demolished discarded concrete pavements and was subsequently tested and analyzed to determine its various physical properties.On this basis,pervious concrete(PC)mix proportions were designed.Coarse RA particles with sizes of 5–10 and 10–20 mm were selected.Concrete specimens were prepared with a water–cement ratio of 0.3,an aggregate–cement ratio of 4.5,the substitute rates of RA with 0,25%,50%,75%and a single-/double-gap-graded RA mix(mass ratio of particles with sizes of 5–10 mm to particles with sizes of 10–20 mm:1:1,1:2,2:1,2:3 and 3:2).Various properties of the RA-containing PC(RPC)were determined by analyzing the compressive strength,splitting tensile strength,effective porosity,permeation coefficient and impact and abrasion resistance of the specimens.The results showed the following:The density of the RPC decreased with an increasing RA replacement ratio.The density of the RPC prepared with a double-gapgraded RA mix was lower than that prepared with a single-gap-graded RA(particle size:10–20 mm)mix.The permeation coefficient of the RPC increased with increasing porosity.The splitting tensile strength of the RPC was positively correlated with its compressive strength.The compressive strength of the RPC decreased with increasing porosity.The regression analysis showed that the impact and abrasion resistance of the RPC increased with increasing compressive strength.In addition,all of the RPC specimens met the strength and permeation requirements.This study can provide theoretical support for the application of RPC.

关键词： Recycled aggregate recycled pervious concrete strength permeability wear resistance mix proportion

IMB模型结合营养管理在高血压伴食管癌患者手术护理中的应用

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中外医学研究 2024年第18期22卷 89-92页

作者：郭丽霞广州中医药大学第一附属医院广东广州510405

目的:探讨信息-动机-行为技巧(information-motivation-behavior,IMB)模型结合营养管理在高血压伴食管癌患者手术护理中的应用效果。方法:选取2021年3月—2023年3月广州中医药大学第一附属医院收治的84例高血压伴食管癌手术患者作为研... 详细信息

目的:探讨信息-动机-行为技巧(information-motivation-behavior,IMB)模型结合营养管理在高血压伴食管癌患者手术护理中的应用效果。方法:选取2021年3月—2023年3月广州中医药大学第一附属医院收治的84例高血压伴食管癌手术患者作为研究对象,根据随机数表法将患者分为对照组(常规护理)和观察组(IMB模型结合营养管理),各42例。比较两组血压、营养指标、手术耐受性。结果:干预后,两组收缩压、舒张压较干预前降低,且观察组较对照组低,差异有统计学意义(P<0.05);干预后,两组血清前白蛋白、白蛋白、血红蛋白水平较干预前提高,且观察组较对照组高,差异有统计学意义(P<0.05);观察组手术耐受性优良率高于对照组,差异有统计学意义(P<0.05)。结论:IMB模型结合营养管理可控制高血压伴食管癌患者血压水平,改善营养状态,提高手术耐受性,为术后康复提供有力保障。

关键词： IMB 模型营养管理高血压食管癌营养状况

基于HTML5的核电厂移动端离线数据同步电子工作包设计

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核电子学与探测技术 2024年第2期44卷 323-333页

作者：郭莉侠高帆郭贞荣李小辉宋忠洋杨强江苏核电有限公司连云港222000

为提高核电厂日常维护和管理的效率和安全性,提出一种基于HTML5技术的移动端离线数据同步电子工作包方案。基于对传统电子工作包在移动端离线使用时的局限性分析,详细阐述本系统的架构设计方案,并重点论述系统利用WebSocket等关键技术... 详细信息

为提高核电厂日常维护和管理的效率和安全性,提出一种基于HTML5技术的移动端离线数据同步电子工作包方案。基于对传统电子工作包在移动端离线使用时的局限性分析,详细阐述本系统的架构设计方案,并重点论述系统利用WebSocket等关键技术实现的离线存储功能和离线数据同步机制。对离线数据同步性能的测试结果显示,该离线数据同步机制具有良好的性能,可以在短时间内同步大量数据,并且具有良好的稳定性,操作人员可以更加方便快捷地访问离线数据同步电子工作包,从而提高工作效率和核电工作流程操作安全性。

关键词：电子工作包离线数据同步 WebSocket技术核电厂日常维修

手术室细节护理管理在医院感染控制中的应用效果

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中国医药指南 2024年第14期22卷 68-71页

作者：罗敏郭丽霞联勤保障部队第九六五医院手术室吉林132001 96605部队医院心理科通化134000

目的观察医院感染控制中手术室细节护理管理的应用效果。方法采用2021年3月—2023年3月在我院接受手术治疗的80例患者,随机分为对照组、观察组,各40例,分别实行常规手术室护理管理、手术室细节护理管理,对两组医院感染发生率、护理质量... 详细信息

目的观察医院感染控制中手术室细节护理管理的应用效果。方法采用2021年3月—2023年3月在我院接受手术治疗的80例患者,随机分为对照组、观察组,各40例,分别实行常规手术室护理管理、手术室细节护理管理,对两组医院感染发生率、护理质量、感染危险因素、患者对护理的满意度、护理人员自我防护知识掌握度以及护理人员对手术室细节护理管理方法的满意度进行评估。结果与对照组相较,观察组医院感染总发生率更低,护理安全、体征监测、器械准备、体征监测、文书记录等各项护理质量评分均更高,患者对护理的满意度更高,护理人员自我防护知识掌握度、满意度均更高(均P<0.05)。结论医院感染控制中手术室细节护理管理应用效果较佳,有效降低感染风险,提高护理质量,提高临床满意度,更利于手术室相关工作的顺利实施。

关键词：手术室细节护理护理管理医院感染控制

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壶关方言中的反预期话语标记“说咧”

忻州师范学院学报 2024年第1期40卷 44-51页

作者：秦煜松郭利霞南开大学汉语言文化学院

“说咧”是壶关方言中的一种规约性间接否定的表达形式，其既可以表示对听话者观点的否定，又可以表示对听话者言语行为的否定。与此同时，“说咧”在本质上属于反预期话语标记，它在语篇中的功能主要包括对听话者观点或言语行为的否定... 详细信息

“说咧”是壶关方言中的一种规约性间接否定的表达形式，其既可以表示对听话者观点的否定，又可以表示对听话者言语行为的否定。与此同时，“说咧”在本质上属于反预期话语标记，它在语篇中的功能主要包括对听话者观点或言语行为的否定、话轮转接、标示信息的不对称。通过对“说咧”共时分布进行调查，发现其主要分布在晋语和冀鲁官话的部分地区，并在此基础上认为其与普通话中“看你说的”有着不同的形成路径。

关键词：壶关方言反预期话语标记说咧

基于声发射检测CSG材料损伤演变及裂纹识别

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建筑材料学报 2024年第6期27卷 565-572页

作者：黄虎刘赵涵邱庆明曹克磊郭利霞华北水利水电大学水利学院河南郑州450046

为了从细观角度揭示胶凝砂砾石(CSG)材料损伤演变机制和裂纹的分类演化规律,结合声发射测试技术,采用Geiger时差定位法、上升角-平均频率法和高斯混合模型,对CSG材料的裂纹类型进行识别.结果表明:CSG材料的破坏过程可分为原始裂纹闭合... 详细信息

为了从细观角度揭示胶凝砂砾石(CSG)材料损伤演变机制和裂纹的分类演化规律,结合声发射测试技术,采用Geiger时差定位法、上升角-平均频率法和高斯混合模型,对CSG材料的裂纹类型进行识别.结果表明:CSG材料的破坏过程可分为原始裂纹闭合、新生裂纹扩展、裂纹聚结和峰后破坏4个阶段;声发射事件的三维定位直观反映了裂纹萌生、扩展直至贯通的动态演化过程;通过裂纹类型识别,加载前期试件以剪切裂纹为主,后期拉伸裂纹占比增加,在临近破坏前,高水胶比时剪切裂纹与拉伸裂纹比约为2∶1,低水胶比时约为1∶1.

关键词：胶凝砂砾石材料声发射时空演化高斯混合模型裂纹类型