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Remediation performance and mechanisms of Cu and Cd contaminated water and soil using Mn/Al-layered double oxide-loaded biochar

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Journal of Environmental Sciences 2023年第3期125卷 593-602页

作者： Pengcheng Lin Hang Liu Hua Yin Minghan Zhu haoyu luo Zhi Dang School of Environment and Energy South China University of TechnologyGuangzhou 510006China Key Laboratory of Ministry of Education on Pollution Control and Ecosystem Restoration in Industry Clusters Guangzhou 510006China Guangdong Provincial Key Laboratory of Solid Wastes Pollution Control and Recycling Guangzhou 510006China

The combined pollution of heavy metals is ubiquitous ***/Al-layered double oxide-loaded crab shells biochar (LDO/BC) was prepared,so as to remediate the combined pollution of Cd and Cu in soil and *** pristine and used LDO/BC were characterized and the results revealed that the layered double oxide was successfully loaded on crab shells biochar (BC) and metal element Ca in crab shells was beneficial to the formation of more regular layered and flake *** maximal adsorption capacity (Qm) of LDO/BC for aqueous Cu^(2+)and Cd^(2+)was 66.23 and 73.47 mg/g,***/BC and BC were used to remediate e-waste-contaminated soil for the first time and exhibited highly efficient *** extraction amount of Cu and Cd in the contaminated soil by diethylene triamine penta-acetic acid (DTPA) after treating with 5% LDO/BC was significantly reduced from 819.84 to 205.95 mg/kg (with passivation rate 74.8%) and 8.46 to 4.16 mg/kg(with passivation rate 50.8%),respectively,inferring that the bioavailability of heavy metals declined *** experimental result also suggested that after remediation by LDO/BC the exchangeable and weak acid soluble Cu and Cd in soil translated to reducible,residual and oxidizable fraction which are more stable ***,complexation and ion exchange were proposed as the possible mechanisms for Cd and Cu *** general,these experiment results indicate that LDO/BC can be a potentially effective reagent for remediation of heavy metal contaminated water and soil.

关键词： Mn/Al-layered double oxide Biochar Cd and Cu combined pollution Adsorption Soil remediation

Simultaneous adsorption of As(Ⅲ) and Pb(Ⅱ) by the iron-sulfur codoped biochar composite:Competitive and synergistic effects

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Journal of Environmental Sciences 2023年第3期125卷 14-25页

作者： Yijun Chen Qintie Lin Xiaoqing Wen Jin He haoyu luo Quanfa Zhong Libin Wu Jiaqi Li Guangdong Industrial Contaminated Site Remediation Technology and Equipment Engineering Research CenterSchool of Environmental Science and EngineeringGuangdong University of TechnologyGuangzhou 510006China Key Lab of Pollution Control and Ecosystem Restoration in Industry Clusters Ministry of EducationSchool of Environment and EnergySouth China University of TechnologyGuangzhou 510006China Key Laboratory for City Cluster Environmental Safety and Green Development of the Ministry of Education Institute of Environmental and Ecological EngineeringGuangdong University of TechnologyGuangzhou 510006China

Simultaneous elimination of As(Ⅲ) and Pb(Ⅱ) from wastewater is still a great *** this work,an iron-sulfur codoped biochar (Fe/S-BC) was successfully fabricated in a simplified way and was applied to the remediate the co-pollution of As(Ⅲ) and Pb(Ⅱ).The positive enthalpy indicated that the adsorption in As-Pb co-pollution was an endothermic *** mechanism of As(Ⅲ) removal could be illustrated by surface complexation,oxidation and *** addition to precipitation and complexation,the elimination mechanism of Pb(Ⅱ) also contained ion exchange and electrostatic *** and synergistic effects existed simultaneously in the co-contamination *** suppression of As(Ⅲ) was ascribed to competitive complexation of the two metals on Fe/S-BC,while the synergy of Pb(Ⅱ) was attributed to the formation of the PbFe2(AsO_(4))2(OH)*** experiments revealed that Fe/S-BC had outstanding ability to remove As(Ⅲ) and Pb(Ⅱ),regardless of pH dependency and interference by various coexisting *** maximum adsorption capacities of the Fe/S-BC for As(Ⅲ) and Pb(Ⅱ) were 91.2 mg/g and 631.7 mg/g,***/S-BC could be treated as a novel candidate for the elimination of As(Ⅲ)-Pb(Ⅱ) combined pollution.

关键词： Iron-sulfur codoped Biochar Arsenic and lead Co-contamination remediation

Structural Variation between the Western and Eastern Kuqa Fold-and-thrust Belt,China:Insights from Seismic Interpretation and Analog Modeling

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Acta Geologica Sinica(English Edition) 2023年第4期97卷 1078-1093页

作者： WANG Wei XIE Huiwen YIN Hongwei JIA Dong XU Zhenping luo haoyu HE Wanhui YUAN Rui DUAN Yunjiang School of Earth Science and Engineering Nanjing UniversityNanjing 210046China Research Institute of Petroleum Exploration and Development Tarim Oilfield CompanyPetroChinaKorlaXinjiang 841000China

The Kuqa fold-and-thrust belt exhibits apparent structural variation in the western and eastern *** salt layer act as effective decollements and influence the varied *** this study,detailed seismic interpretations and analog modeling are presented to construct the suprasalt and subsalt structures in the transfer zone of the middle Kuqa and investigate the influence of the two salt *** results reveal that the relationship of the two salt layers changes from separated to connected,and then overlapped toward the foreland in the transfer *** structural models are formed in the suprasalt and subsalt units due to the interaction of the two salt *** imbricate thrust faults form two broom-like fault systems in the subsalt *** suprasalt units develop detached folds terminating toward the east in the region near the orogenic ***,two offset anticlines with different trends develop at the frontal edge of the lower salt layer and the trailing edge of the upper salt layer,*** to exploration results in this region,the relationship between suprasalt and subsalt structures has an influence on hydrocarbon *** believe that the connected deformation contains high-risk plays while the decoupled deformation contains well-preserved plays.

关键词： along-strike variation analog modeling 3D geometric model salt-related structure Kuqa fold-and-thrust belt

Magnesium-L-threonate treats Alzheimer's disease by modulating the microbiota-gut-brain axis

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Neural Regeneration Research 2024年第10期19卷 2281-2289页

作者： Wang Liao Jiana Wei Chongxu Liu haoyu luo Yuting Ruan Yingren Mai Qun Yu Zhiyu Cao Jiaxin Xu Dong Zheng Zonghai Sheng Xianju Zhou Jun Liu Department of Neurology The Second Affiliated Hospital of Guangzhou Medical UniversityGuangzhouGuangdong ProvinceChina Special Medical Service Center Neuroscience CenterIntegrated Hospital of Traditional Chinese MedicineSouthern Medical UniversityGuangdongGuangdong ProvinceChina Department of Rehabilitation The Second Affiliated HospitalGuangzhou Medical UniversityGuangzhouGuangdong ProvinceChina Department of Neurology Sun Yat-sen Memorial HospitalSun Yat-sen UniversityGuangzhouGuangdong ProvinceChina Department of Neurology The Affiliated Brain Hospital of Guangzhou Medical UniversityGuangzhouGuangdong ProvinceChina Institute of Biomedical and Health Engineering Shenzhen Institute of Advanced TechnologyChinese Academy of SciencesShenzhenGuangdong ProvinceChina

Disturbances in the microbiota-gut-brain axis may contribute to the development of Alzheimer's disease. Magnesium-L-threonate has recently been found to have protective effects on learning and memory in aged and Alzheimer's disease model mice. However, the effects of magnesium-L-threonate on the gut microbiota in Alzheimer's disease remain unknown. Previously, we reported that magnesium-L-threonate treatment improved cognition and reduced oxidative stress and inflammation in a double-transgenic line of Alzheimer's disease model mice expressing the amyloid-β precursor protein and mutant human presenilin 1(APP/PS1). Here, we performed 16S r RNA amplicon sequencing and liquid chromatography-mass spectrometry to analyze changes in the microbiome and serum metabolome following magnesium-Lthreonate exposure in a similar mouse model. Magnesium-L-threonate modulated the abundance of three genera in the gut microbiota, decreasing Allobaculum and increasing Bifidobacterium and Turicibacter. We also found that differential metabolites in the magnesiumL-threonate-regulated serum were enriched in various pathways associated with neurodegenerative diseases. The western blotting detection on intestinal tight junction proteins(zona occludens 1, occludin, and claudin-5) showed that magnesium-L-threonate repaired the intestinal barrier dysfunction of APP/PS1 mice. These findings suggest that magnesium-L-threonate may reduce the clinical manifestations of Alzheimer's disease through the microbiota-gut-brain axis in model mice, providing an experimental basis for the clinical treatment of Alzheimer's disease.

关键词： Alzheimer's disease APP/PS1 double-transgenic Alzheimer's disease mouse model inflammation intestinal barrier dysfunction magnesium-L-threonate microbiome microbiota-gut-brain axis oxidative stress serum metabolites

Natural variation in ZmGRF10 regulates tolerance to phosphate deficiency in maize by modulating phosphorus remobilization

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The Crop Journal 2024年第5期12卷 1414-1425页

作者： Yankai Wang Xiaohui Peng Xuechun Lian Qi Yu Lingli Zhang Tingting Li haoyu luo Tingting Li Kaili Yu Wenli Zhang Deyi Zhong Yonghui Zhao Shengben Li College of Life Sciences Nanjing Agricultural UniversityNanjing 210095JiangsuChina State Key Laboratory of Crop Genetics&Germplasm Enhancement and Utilization Nanjing 210095JiangsuChina Academy for Advanced Interdisciplinary Studies Nanjing Agricultural UniversityNanjing 210095JiangsuChina

Phosphorus is a limiting factor in agriculture due to restricted availability in soil and low utilization efficiency of *** identification of superior haplotypes of key genes responsible for low-phosphate(Pi)tolerance and their natural variation is important for molecular *** this study,we conducted genome-wide association studies on low-phosphate tolerance coefficients using 152 maize inbred lines,and identified a significant association between SNPs on chromosome 7 and a low-phosphate tolerance ***10 was identified as a candidate gene involved in adaptation of maize to Pi *** of ZmGRF10 is induced by Pi starvation.A mutation in ZmGRF10 alleviated Pi starvation ***-seq analyses revealed significant upregulation of genes encoding various phosphatases in the zmgrf10-1 mutant,suggesting that ZmGRF10 negatively regulates expression of these genes,thereby affecting low-Pi tolerance by suppressing phosphorus remobilization.A superior haplotype with variations in the promoter region exhibited lower transcription activity of *** study unveiled a novel gene contributing to tolerance to low-Pi availability with potential to benefit molecular breeding for high Pi utilization.

关键词： Corn Phosphate utilization efficiency GWAS Phosphorus metabolism

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中国复材——矢志引领复合材料产业进步

中国建材 2007年第12期 70-74页

作者：罗皓宇

中国复材4年来主营业务收入增长334%,利润总额增长212%,净利润增长163%;已由单一复合材料制造商发展为以风力发电机叶片、碳纤维、新型铺地材料、玻璃纤维薄毡、玻璃钢管罐、高压容器、船艇及休闲类复合材料产品等为主营业务的国家级产... 详细信息

中国复材4年来主营业务收入增长334%,利润总额增长212%,净利润增长163%;已由单一复合材料制造商发展为以风力发电机叶片、碳纤维、新型铺地材料、玻璃纤维薄毡、玻璃钢管罐、高压容器、船艇及休闲类复合材料产品等为主营业务的国家级产业集团。

关键词：复合材料材料产业中国玻璃纤维薄毡利润增长风力发电机业务收入铺地材料

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基于社会网络特征的云服务副本放置策略

计算机应用 2013年第8期33卷 2143-2146,2150页

作者：罗浩宇陈旺虎西北师范大学计算机科学与工程学院兰州730070

为提高云环境下业务流程的执行效率,提出一种云服务副本放置策略。该策略基于社会网络分析的思想,挖掘出云服务社区中服务网络的连通性、中心化等社会网络特征,从而确定服务网络中处于枢纽位置的中心服务节点。通过分析中心服务节点和... 详细信息

为提高云环境下业务流程的执行效率,提出一种云服务副本放置策略。该策略基于社会网络分析的思想,挖掘出云服务社区中服务网络的连通性、中心化等社会网络特征,从而确定服务网络中处于枢纽位置的中心服务节点。通过分析中心服务节点和其前驱节点的逻辑序列关系,结合服务节点所在物理机的负载情况,确定中心服务节点的副本的宿主物理机并进行预放置。实验结果表明,该策略可以减少云环境中的业务流程因异地服务的交互造成的时间消耗,均衡节点负载,提高业务流程的执行效率。

关键词：云计算服务副本业务流程社会网络中心化预放置

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中国动力煤库存指数的构建及预测分析

中国煤炭 2015年第8期41卷 31-35页

作者：罗昊宇丁日佳杨洋中国矿业大学(北京)管理学院北京市海淀区100083

以我国动力煤库存为研究对象,构建我国动力煤库存指数,可以客观反映我国动力煤市场的运行状况。基于GM(1,1)灰色系统理论实现对动力煤产需平衡指数的短期预测,对动力煤生产、运输和消费等相关行业市场化运行起到指导性作用。

关键词：煤炭库存动力煤预测分析

MEC中面向动态环境的工作流D2D协同卸载方法

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山东大学学报（工学版） 2022年第4期52卷 45-53页

作者：钱程赵淦森罗浩宇华南师范大学计算机学院广东广州510631 广州市云计算安全与测评技术重点实验室广东广州510631

为解决现实场景中终端设备的移动性与性能波动对工作流D2D(device-to-device)协同卸载带来的问题,提出一种面向动态环境的工作流D2D协同卸载方法,以尽可能小的卸载成本保证工作流在时间约束内得到及时响应。在工作流的卸载执行过程中感... 详细信息

为解决现实场景中终端设备的移动性与性能波动对工作流D2D(device-to-device)协同卸载带来的问题,提出一种面向动态环境的工作流D2D协同卸载方法,以尽可能小的卸载成本保证工作流在时间约束内得到及时响应。在工作流的卸载执行过程中感知其执行时间状态,并提出贪婪有序自适应搜索算法进行高效的工作流D2D卸载决策,根据环境变化及工作流执行时间状态在线调整卸载方案。仿真结果表明,该卸载方法在动态环境中具有有效性,并且卸载决策所需的计算开销很低(仅为粒子群优化算法的1.63%),具有较高的实时性。

关键词：移动边缘计算工作流 D2D卸载计算卸载在线决策