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Treatment of Heavy Metal Pollution in Sediment and Its Resource Utilization in Building Ceramics
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作者 Chenhao LIANG Lidan CAI +3 位作者 Zhuoxu NIE Xinhao ZHAO Chen WANG Xiaohong XIONG 《Asian Agricultural Research》 2023年第5期14-16,共3页
With the rapid development of China's social economy and the acceleration of urbanization,a large quantity of production and domestic sewage is discharged into rivers and lakes,and the concentration of pollutants ... With the rapid development of China's social economy and the acceleration of urbanization,a large quantity of production and domestic sewage is discharged into rivers and lakes,and the concentration of pollutants leads to serious excessive heavy metals in sediment,which affects the ecological environment.In this paper,the treatment technology of heavy metal pollution in sediment and its resource utilization in building ceramics in China are systematically analyzed and summarized,in order to provide a reference for the treatment of sediment in rivers and lakes and the sustainable development of building ceramics industry. 展开更多
关键词 sEDIMENT building ceramics Resource utilization Research progress
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基于AHP-DS异质数据融合的建筑空间占用感知算法
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作者 杨镇宇 吴晓菲 +2 位作者 魏昕 顾小军 唐觉民 《软件》 2024年第3期42-47,共6页
智慧建筑智能控制系统旨在优化建筑物的建筑空间舒适度及能源分配,近年来受到了广泛关注,而建筑空间占用信息对智慧建筑管理系统的决策具有重要作用。现有建筑空间占用感知方法尚未针对如何融合具有不确定性、冲突性的多源数据问题提出... 智慧建筑智能控制系统旨在优化建筑物的建筑空间舒适度及能源分配,近年来受到了广泛关注,而建筑空间占用信息对智慧建筑管理系统的决策具有重要作用。现有建筑空间占用感知方法尚未针对如何融合具有不确定性、冲突性的多源数据问题提出有效解决方案,基于此,本文将D-S证据理论引入建筑空间占用预测中,并构建了基于建筑空间占用检测的mass函数确保D-S证据理论在该应用中的性能。另外,本文引入层次分析法(Analytic Hierarchy Process,AHP)解决多源异构数据源间的冲突所导致的建筑空间占用误测的问题,以提升感知精准度和系统性能。 展开更多
关键词 智慧建筑 建筑空间占用检测 D-s证据理论 多源异构数据融合
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Shandong Hualuoli Building Ceramics General Co. (Group)
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《China's Foreign Trade》 1995年第10期12-12,共1页
The Shandong Hualuoli Building Ceramics General Co. (Group) is a large comprehensive building materials enterprise established with approval from the Provincial Structure Reform Commission in March 1993. The company w... The Shandong Hualuoli Building Ceramics General Co. (Group) is a large comprehensive building materials enterprise established with approval from the Provincial Structure Reform Commission in March 1993. The company was first founded in 1979 with seven subsidiary enterprises, including the Linyi Hualuoli Building Ceramics Co. Ltd., Linyi Tianren Building 展开更多
关键词 HIGH shandong Hualuoli building ceramics General Co GROUP
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Experimental Study of the Interaction between Building Clusters and Flash Floods 被引量:3
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作者 DU Jun HE Xiao-yan +2 位作者 WANG Zhao-yin ZHANG Chen-di LI Wen-xin 《Journal of Mountain Science》 SCIE CSCD 2015年第5期1334-1344,共11页
In recent years, flash flood disasters have occurred frequently in southwest China due to the increased frequency of extreme climate events. To solve this problem, great efforts have been made in studying the process ... In recent years, flash flood disasters have occurred frequently in southwest China due to the increased frequency of extreme climate events. To solve this problem, great efforts have been made in studying the process of flash flood. However, little attention was paid on bearing body of hazard, the clusters of buildings. Thus the real disaster mechanism of flash flood remains unclear.Accordingly, based on the experiments of artificial flash floods in a conceptual solid model, this paper focuses on the flood-impacted inundation characteristics of the building clusters at different locations of the gully model, in order to obtain a better understanding of the disaster process and the interaction between the flash floods and building clusters. The results showed that, in a typical smallscale flash flood gully with hot and dry climate, 1)clusters of buildings on an alluvial fan could reduce about 35% of the flooding area by blocking the diffusion of the flood to the depression areas, and could also promote the deposition in lower reaches of the river channel by blocking the overbank flow from going back into the channel, making the width-depth ratio of the channel larger. 2) The flash flood rates of disaster and hazard on the alluvial fan are generally higher than that of the inner gully. For the inner gully,buildings located on the beaches along the lower river and the transitional areas of the straight channel and channel bends can easily be affected because of their lower elevations. For the alluvial fan, buildings nearby the meanders suffer the greatest impacts because of bank collapsing and flooding. 3) The safe vertical distance from a building to the river channel is 13 m for the buildings in the inner gully under extreme floods. Below this threshold, the smaller the vertical distance is, the greater the risk exposure is. For the buildings on the alluvial fan, especially for the buildings near the concave bank of the top rush point,the horizontal distance is more important, and the safe value is 80 m under extreme floods. 展开更多
关键词 Flash floods building clusters settlement's distribution Disaster process Fieldmodel experiment
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Preparation of Gd_2O_2S:Pr Scintillation Ceramics by Pressureless Reaction Sintering Method 被引量:3
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作者 Jingbao Lian Xudong Sun +3 位作者 Tie Gao Qiang Li Xiaodong Li Zhigang Liu 《Journal of Materials Science & Technology》 SCIE EI CAS CSCD 2009年第2期254-258,共5页
Fabrication of Gd2O2S:Pr scintillation ceramics by 2Gd2O3.(Gd,Pr)2(SO4)3.mH2O precursor was made Gd2O3, Pr6O11 and H2SO4 as the starting materials pressureless reaction sintering was investigated. The by hydrothe... Fabrication of Gd2O2S:Pr scintillation ceramics by 2Gd2O3.(Gd,Pr)2(SO4)3.mH2O precursor was made Gd2O3, Pr6O11 and H2SO4 as the starting materials pressureless reaction sintering was investigated. The by hydrothermal reaction using commercially available Then single phase Gd2O2SO4:Pr powder was obtained by calcining the precursor at 750℃ for 2 h. The Gd2O2SO4:Pr powder compacts can be sintered to single phase Gd2O2S:Pr ceramics with a relative density of 99% and mean grain size of 30um at 1750℃ for 2 h in flowing hydrogen atmosphere. Densification and microstructural development of the Gd2O2S:Pr ceramics were examined. Luminescence spectra of the Gd2O2S:Pr ceramic under 309 nm UV excitation and X-ray excitation show a green emission at 511 nm as the most prominent peak, which corresponds to the ^3p0-3H4 transition of Pr^3+ ions. 展开更多
关键词 scintillation ceramics Gd2O2s Pressureless reaction sintering X-ray excited luminescence (XEL)
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Effects of a Building’s Density on Flow in Urban Areas 被引量:1
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作者 Jae-Jin KIM Do-Yong KIM 《Advances in Atmospheric Sciences》 SCIE CAS CSCD 2009年第1期45-56,共12页
The effects of a building's density on urban flows are investigated using a CFD model with the RNG k - ε turbulence closure scheme. Twenty-seven cases with different building's density parameters (e.g., building a... The effects of a building's density on urban flows are investigated using a CFD model with the RNG k - ε turbulence closure scheme. Twenty-seven cases with different building's density parameters (e.g., building and street-canyon aspect ratios) are numerically simulated. As the building's density parameters vary, different flow regimes appear. When the street canyon is relatively narrow and high, two counterrotating vortices in the vertical direction are generated. The wind speed along streets is mainly affected by the building's length. However, it is very difficult to find or generalize the characteristics of the street-canyon flows in terms of a single building's density parameter. This is because the complicated flow patterns appear due to the variation of the vortex structure and vortex number. Volume-averaged vorticity magnitude is a very good indicator to reflect the flow characteristics despite the strong dependency of flows on the variation of the building's density parameters. Multi-linear regression shows that the volume-averaged vorticity magnitude is a strong function of the building's length and the street-canyon width. The increase in the building's length decreases the vorticity of the street-canyon flow, while, the increase in the street- canyon width increases the vorticity. 展开更多
关键词 urban flow characteristics buildings density parameter volume-averaged vorticity CFD model
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基于T-S模糊故障树和贝叶斯网络的建筑施工风险评估模型建立及应用 被引量:6
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作者 杜敏维 于德湖 邵志国 《青岛理工大学学报》 CAS 2023年第1期21-29,共9页
作为国民经济发展的支柱产业,建筑业安全事故频发,施工安全形势严峻。为有效评估和降低建筑施工安全风险,将T-S模糊故障树和贝叶斯网络进行结合,建立一种建筑施工风险评估模型。利用T-S门规则和贝叶斯网络的条件概率,建立T-S模糊故障树... 作为国民经济发展的支柱产业,建筑业安全事故频发,施工安全形势严峻。为有效评估和降低建筑施工安全风险,将T-S模糊故障树和贝叶斯网络进行结合,建立一种建筑施工风险评估模型。利用T-S门规则和贝叶斯网络的条件概率,建立T-S模糊故障树的贝叶斯网络转化模型,引入模糊理论对事件风险概率进行模糊化,最终借助贝叶斯网络双向推理算法计算故障概率、重要度及后验概率。结果表明,该模型能够根据基本事件风险概率进行量化计算,以正向推理方式计算体系事故发生概率;能够量化根节点的模糊重要度,确定事件重点管控顺序;且可以通过反向推理计算根节点后验概率,确定故障排查顺序。该计算模型最大限度贴近实际施工情形,更加科学合理地进行建筑施工风险评估,可为建筑施工的安全风险评估和精准化管理提供理论支持。 展开更多
关键词 建筑施工 风险评估 T-s模糊故障树 贝叶斯网络 安全管理
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Thermal Expansion Behavior of Precursor-Derived Amorphous Si-C-N and Si-B-C-N Ceramics 被引量:1
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作者 Jianqiang HansJuergenSeifert 《Journal of Materials Science & Technology》 SCIE EI CAS CSCD 2002年第2期139-142,共4页
Thermal expansion behaviors of some precursor-derived amorphous Si-C-N and Si-B-C-N ceramics, which were shaped by plastic forming after crosslink, were studied. To complete the shrinkage and densification, after ther... Thermal expansion behaviors of some precursor-derived amorphous Si-C-N and Si-B-C-N ceramics, which were shaped by plastic forming after crosslink, were studied. To complete the shrinkage and densification, after thermolysis specimens were heat treated at a temperature of 1400℃ for 10 h in nitrogen atmosphere. The thermal expansion coefficient of VT50-derived amorphous Si-C-N ceramic increases from 1.98×10-6/K at 400℃ to 3.09×10-6/K at 1000℃, of NCP200-derived amorphous Si-C-N ceramic increases from 2.35×10-6/K at 400℃ to 3.45×10-6/K at 1000℃, and of T2-l-derived amorphous Si-B-C-N ceramic increases from 2.08×10-6/K at 400℃ to 3.18×10-6/K at 1000℃. No glass transition for these amorphous ceramic materials was detected, indicating that as-thermolyzed precursor-derived Si-(B-)C-N ceramic materials are amorphous solids, but not glasses. 展开更多
关键词 Thermal expansion Amorphous ceramics PRECURsOR s-C-N si-B-C-N
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Student capacity building of dengue prevention and control: A study of an Islamic school, Southern Thailand
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作者 Charuai Suwanbamrung Niran Tapalak +4 位作者 Charuai Jitchun Chairat Promsuwan Somjit Prosupa Yoottapong Muenraj Anan Dumpan 《Health》 2012年第7期366-376,共11页
Dengue has been a critical problem for an Islamic School, Nakhon Si Thammarat province, Southern Thailand. Objectives: 1) to build student capacity;and 2) to evaluate the results of student capacity building. Method: ... Dengue has been a critical problem for an Islamic School, Nakhon Si Thammarat province, Southern Thailand. Objectives: 1) to build student capacity;and 2) to evaluate the results of student capacity building. Method: Participatory Action Research: PAR was applied in three phases: 1) the school-based preparation phase;2) the process of building student capacity phase, and 3) evaluation of the results of the student capacity building. Independent T-Test statistical method was used to analyze student capacity both before and after the intervention. Larval Indices were determined through ratio analysis. Results: Prior to the intervention, there was no clear strategy for combating dengue. In this study, three groups were formed to build student capacity: a leader group, a non-leader group, and a support group. The leader group (48 student leaders), critical to the study, was set as a dengue club named “Eliminate Ades Aegypti, the culprit of dengue” which focused on eight sets of activities: “Dengue or Death”, “Seniors educating juniors”, “Reward for good answers”, “Dengue monitoring team”, “Youth to expel mosquetoes”, “Mosquito or busy”, “Garbage elimination of Pondok”, and “Essential doctors”. The level of student capacity for the prevention and control of dengue of a sampling of 308 student representatives of the Pondok (Islamic school) showed an increase after intervention ( (SD);56.78 (17.06);65.33(15.36) and different statistic significant (P < 0.001). The Larval indices ratio levels had decreased from the original levels (BI = 244, HI = 45, and CI = 26) after intervention (BI = 137, HI = 39, and CI = 19). Dengue morbidity and mortality rates were not found during the study. Discussion: Although there had been an increase in student capacity, a decrease in the larval indices ratio, and the absence of a dengue epidemiology index, the high risk of a dengue epidemic might still be found in the school because the ratio of larval indices were higher than the standard index. Then, the committed participation of students, school, and communities around the school vicinity is needed in building student capacity of dengue prevention and control. 展开更多
关键词 student’s Capacity building Process DENGUE PREVENTION and Control IsLAMIC sCHOOL Pondok
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INFLUENCE OF UNCERTAINTY OF ROCK PROPERTIES ON SEISMIC RESPONSES OF REACTOR BUILDINGS
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作者 李忠诚 李忠献 《Transactions of Tianjin University》 EI CAS 2006年第1期50-55,共6页
The influence of the dispersion and uncertainty of the dynamic shear wave velocity and Poisson's ratio of soil in a hard rock site was investigated on the seismic response of reactor building structure. The analysis ... The influence of the dispersion and uncertainty of the dynamic shear wave velocity and Poisson's ratio of soil in a hard rock site was investigated on the seismic response of reactor building structure. The analysis is performed by considering the soil-structure interaction effects and based on the model of the reactor building in a typical pressurized water reactor nuclear power plant (NPP). The numerical results show that for the typical floor selected, while the relative increment ratio of the dynamic shear wave velocity varies from -30% to 30% compared to the basis of 1 930 m/s, the relative variation of the horizontal response spectra peak value lies in the scope of ±10% for the internal structure, and the relative variation of the frequency corresponding to the spectra peak is 0.0% in most cases. The relative variation of the vertical response spectra peak value lies in the scope of - 10% to 22%, and the relative variation of the frequency corresponding to the Spectra peak lies in the scope of - 22% to 4%. The analysis indicates that the dynamic shear wave velocity and the Poisson's ratio of the rock would affect the seismic response of structure and the soil-structure interaction effects should be considered in seismic analysis and design of NPP even for a hard rock site. 展开更多
关键词 reactor building seismic response floor response spectra dynamic shear wave velocity Poisson's ratio sensitivity analysis
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Zhongguancun: Building Up China's Software Magnate
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《China's Foreign Trade》 2002年第9期19-20,共2页
关键词 WILL THAN Zhongguancun building Up China’s software Magnate
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China's Building Materials Industry
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作者 Liu Yu 《China's Foreign Trade》 1994年第6期20-20,共1页
China’s building materials industry experienced great development in 1993 with rapid increases in production and record output and profits. The industry produced 360 million tons of cement, 96.163 million cases of pl... China’s building materials industry experienced great development in 1993 with rapid increases in production and record output and profits. The industry produced 360 million tons of cement, 96.163 million cases of plate glass, 20.4 million pieces of sanitation ceramics and 173 million square metres of construction ceramics, showing rises of 12.89, 12.83, 123.8 and 127 percent respectively over the previous year. The output of cement and 展开更多
关键词 OVER HIGH China’s building Materials Industry
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Agricultural Changes in Xinjiang in the Sixth Year of Guangxu s Reign from the Perspective of the Monument for Building Qarqi Canal
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作者 Danyang GONG 《Asian Agricultural Research》 2022年第12期57-59,共3页
The Monument for Building Qarqi Canal was inscribed in the sixth year of Guangxu s reign in the Qing Dynasty(1880).This inscription made a detailed record of the event when the Qing army expelled the invading army of ... The Monument for Building Qarqi Canal was inscribed in the sixth year of Guangxu s reign in the Qing Dynasty(1880).This inscription made a detailed record of the event when the Qing army expelled the invading army of Mohammad Yaqub Beg,whenever the Qing army regained a place,it immediately started recruiting exiled people,restoring agriculture,building water conservancy and did other rehabilitation works.The army of the Qing Dynasty successively established rehabilitation bureaus in various parts of southern Xinjiang to be responsible for the rehabilitation works.These once again set off a climax in the development of water conservancy in multi-ethnic areas in Xinjiang,and laid the foundation for the rapid development of agricultural development and water conservancy in Xinjiang during the Guangxu s reign in the Qing Dynasty. 展开更多
关键词 Monument for building Qarqi Canal Guangxu s reign in the Qing Dynasty Appeasing refugees Restoring agriculture building water conservancy projects
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S-型异质结CeO_(2)/Zn_(x)Cd_(1-x)In_(2)S_(4)空心结构的构建及其可见光分解水制氢性能 被引量:2
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作者 蔡晓燕 杜家豪 +3 位作者 钟光明 张一鸣 毛梁 娄在祝 《物理化学学报》 SCIE CAS CSCD 北大核心 2023年第11期120-130,共11页
层状结构材料ZnIn_(2)S_(4)(ZIS)具有强的可见光吸收、合适的能带结构、高的化学稳定性和低毒性,是优良的光催化材料。然而,ZIS的低载流子分离效率造成其光催化产氢效率较低。为了解决这一难题,本文提出了一种整合固溶体形成和异质结构... 层状结构材料ZnIn_(2)S_(4)(ZIS)具有强的可见光吸收、合适的能带结构、高的化学稳定性和低毒性,是优良的光催化材料。然而,ZIS的低载流子分离效率造成其光催化产氢效率较低。为了解决这一难题,本文提出了一种整合固溶体形成和异质结构建的能带结构调控策略。通过在CeO_(2)空心球表面原位生长ZnxCd1-xIn_(2)S_(4)(ZCIS)纳米片,成功制备了具有分级中空结构的CeO_(2)/ZCIS复合光催化剂。制备的1:6-CeO_(2)/Zn_(0.9)Cd_(0.1)In_(2)S_(4)样品在可见光下表现出了4.09 mmol·g^(-1)·h^(-1)的最佳产氢速率,分别是ZIS、ZCIS和CeO_(2)/ZIS的6.8、3.0和2.2倍。其光催化活性的显著增强主要归功于CeO_(2)/ZCIS的能带结构改变产生S-型异质结电荷传输通道。同时,引入Cd阳离子使得ZIS的导带和价带同时上移,为水裂解提供强还原性光电子。相比于CeO_(2)/ZIS异质结,ZCIS和CeO_(2)之间存在更大的费米能级差,可促进更多的自由电子从ZCIS转移到CeO_(2),在CeO_(2)/ZCIS界面形成强内建电场,促进载流子有效分离,提高光催化产氢效率。本研究将为S-型异质结光催化材料设计和构筑提供一种有效策略。 展开更多
关键词 光催化 制氢 s-型异质结 内建电场 电荷分离
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Rethinking China's Soft Power Building in Africa
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作者 HE Wenping 《International Understanding》 2017年第2期1-10,共10页
Sino-African relations have progressed significantly on the economic front over the past one and half decade ever since the establishment of the Forum on China-Africa Cooperation(FOCAC) in October 2000.For example。
关键词 in or on Is Rethinking China’s soft Power building in Africa of been FORM that
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-10℃条件下掺氯化镁溶液的γ-C_(2)S碳化性能研究
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作者 谭益成 刘志超 王发洲 《材料导报》 EI CAS CSCD 北大核心 2023年第1期73-79,共7页
γ-C_(2)S是一种高活性的碳化固结胶凝材料,在与CO_(2)反应过程中对环境温度敏感性低,可用于制备负温建筑材料。本工作研究了-10℃条件下掺氯化镁溶液γ-C_(2)S碳化养护过程中的温度变化和硬化体的碳化产物组成、强度与反应程度发展规... γ-C_(2)S是一种高活性的碳化固结胶凝材料,在与CO_(2)反应过程中对环境温度敏感性低,可用于制备负温建筑材料。本工作研究了-10℃条件下掺氯化镁溶液γ-C_(2)S碳化养护过程中的温度变化和硬化体的碳化产物组成、强度与反应程度发展规律以及微观形貌。结果表明:未掺MgCl_(2)的γ-C_(2)S样品在-10℃碳化养护后强度发展缓慢,24 h后仅有10.83 MPa。掺入不同浓度MgCl_(2)溶液后,碳化体早期与后期强度均提升明显,0.5 h和24 h抗压强度最高可分别增至22.14 MPa和178.56 MPa。γ-C_(2)S在-10℃下碳化产物以方解石为主,并含有少量文石,掺氯化镁溶液后由于Mg^(2+)对Ca^(2+)的取代形成部分镁方解石。MgCl_(2)一方面通过降低溶液冰点使体系内在-10℃下仍存在液态水,为碳化过程提供反应环境,另一方面能促进Ca^(2+)溶出和碳化反应的进程。两者的协同效应保证γ-C_(2)S在-10℃条件下碳化养护仍能表现出优异的力学性能。 展开更多
关键词 γ-C_(2)s 负温建筑材料 碳化养护 MgCl_(2) 抗压强度
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航空发动机用SiC/SiC复合材料典型元件设计及性能评价研究进展 被引量:2
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作者 刘虎 束小文 +4 位作者 洪智亮 杨金华 郭洪宝 孙世杰 焦健 《材料导报》 CSCD 北大核心 2023年第14期8-15,共8页
SiC/SiC复合材料具有轻质、耐高温、高强度等优点,已在国外航空发动机热端部件上大量应用并取得积极效果。作为航空发动机关键材料“积木式”评价技术中的重要组成部分,元件级评价是连接材料级测试和部件级考核的桥梁纽带,对促进材料在... SiC/SiC复合材料具有轻质、耐高温、高强度等优点,已在国外航空发动机热端部件上大量应用并取得积极效果。作为航空发动机关键材料“积木式”评价技术中的重要组成部分,元件级评价是连接材料级测试和部件级考核的桥梁纽带,对促进材料在部件上的应用至关重要。本文梳理了航空发动机热端部件中几种典型的SiC/SiC复合材料元件,包括开孔、“C”形、“T”形、筒形及翼形元件等,综述了针对不同类型元件所开展的评价试验及测试方法,包括力学性能测试、服役环境性能评价等,阐述了结构特征、材料性质等因素对元件损伤行为和失效机制的影响,最后提出我国在完善航空发动机用SiC/SiC复合材料元件研究方面的建议。 展开更多
关键词 sIC/sIC复合材料 典型元件 “积木式”验证 航空发动机
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Running States of China's Iron & Steel,Nonferrous,and Building Materials Industries in 2012
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《China's Refractories》 CAS 2013年第1期11-11,共1页
Iron & Steel Industry China's outputs of crude steel, steel products, coke and ferrous alloys in 2012 were 716.54 million tons (up 3.1% YOY), 051.86 million tons (up 7.7% YOY), 443.23 million tons (up 5.2% YOY... Iron & Steel Industry China's outputs of crude steel, steel products, coke and ferrous alloys in 2012 were 716.54 million tons (up 3.1% YOY), 051.86 million tons (up 7.7% YOY), 443.23 million tons (up 5.2% YOY) and 31.29 million tons (up 15% YOY), 展开更多
关键词 Running states of China’s Iron steel Nonferrous and building Materials Industries in 2012
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China's NGOs in Building Beautiful China
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作者 Li Wei Xiao Lan 《International Understanding》 2013年第4期49-52,共4页
NGOs are voluntary,non-governmental,non-profit social organizations.In China,NGOs active in ecology and environment protection are generally known as environment NGOs.Tasked with protecting ecological environment,they... NGOs are voluntary,non-governmental,non-profit social organizations.In China,NGOs active in ecology and environment protection are generally known as environment NGOs.Tasked with protecting ecological environment,they are selfgoverning organizations with no administrative power which provide environmental public service.In the last 20 years,NGOs have changed 展开更多
关键词 THAN MORE China’s NGOs in building Beautiful China
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Running State of China's Building Materials Industry in 2013
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《China's Refractories》 CAS 2014年第1期42-42,共1页
In 2013, China's outputs of cement and flat glass were 2. 414 billion tons and 778.98 million weight cases, increasing by 9.6% and 11.2% YOY, respectively.
关键词 Running state of China’s building Materials Industry in 2013
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