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Journal of Environmental Sciences 2021年第9期33卷 194-204页

作者： Wenwu Yang Zhenfei Yang Luhua Shao sijian Li Yutang liu Xinnian Xia College of Chemistry and Chemical Engineering Hunan UniversityChangsha 410082China Advanced Catalytic Engineering Research Center of the Ministry of Education Hunan UniversityChangsha 410082China College of Environmental Science and Engineering Hunan UniversityLushan South RoadYuelu DistrictChangsha 410082China

Cr(Ⅵ) is a common heavy metal ion, which will seriously harm human body and environment.Therefore, the removal of Cr(Ⅵ) has become an attractive topic.In this work, cinder was used as a raw material to synthesize a nanoneedle material: γ-(AlOOH@FeOOH)(γ-Al@Fe).The physicochemical properties of γ-Al@Fe were thoroughly characterized, and its effectiveness as a catalyst for photocatalytic reduction of Cr(Ⅵ) was evaluated.The results showed that Cr(Ⅵ) could be efficiently reduced by γ-Al@Fe in the presence of tartaric acid(TA) under visible light.The variable factors on the reaction were investigated in detail, and the results showed that under optimal conditions(γ-Al@Fe 0.4 g/L, TA 0.6 g/L, pH 2), Cr(Ⅵ)was completely reduced within 7 min.Besides, scavenger experiments and EPR proved that O_(2)^(·-) and CO_(2)^(·-) played a significant role in the photocatalytic reduction of Cr(Ⅵ).TA acts as a sacrificial agent to trap the holes and generate strong reducing free radicals: CO_(2)^(·-).Dissolving O_(2) could react with electrons to generate O_(2)^(·-).This work discussed the performance and mechanism of photocatalytic reduction of Cr(Ⅵ) in detail, which provided a new idea for the resource utilization of solid waste and the treatment of heavy metal sewage.

关键词： Cinder Tartaric acid Visible light photocatalysis Cr(Ⅵ)removal Reduction mechanism

Biological analysis of woodpecker’s brain after impact experiments

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Science China(Technological Sciences) 2021年第5期64卷 1101-1106页

作者： XU Peng NI YiKun liu JingLong ZHANG WeiRong liu sijian WANG LiZhen FAN YuBo Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education Beijing Advanced Innovation Centre for Biomedical EngineeringSchool of Biological Science and Medical EngineeringBeihang UniversityBeijing 100083China

Woodpeckers can withstand a fierce impact during pecking.Previous studies have focused on the biomechanical analysis of the pecking process,the properties of the beak and hyoid bone of woodpecker;however,the biological characteristics of the woodpecker brain are also important in resisting impact injuries.We employed impact experiments and biological analysis in normal and injured brains to reveal the impact-resistant biological characteristics of woodpecker brains,as well as the impact energy’s biological effects on the woodpecker brain.The hoopoe,which has a similar size but only a slight pecking behavior,was selected as the control group to compare brain morphology and neuronal cells differences in normal brains between woodpecker and hoopoe by sectioning and staining.A loading device was designed to conduct a quantifiable impact energy to the woodpeckers’head.Four groups of woodpeckers were impacted with the same energy on the forehead,beak,tempus and occiput,respectively.Biological changes in the injured brains were evaluated by Nissl staining and enzyme-linked immunosorbent assay.The results showed that:(1)woodpeckers had a larger cerebellum and a higher density of Nissl bodies than hoopoe;(2)Nissl apoptosis appeared in the brain samples after the forehead and the occiput impact experiments,but no obvious Nissl body apoptosis was observed after impact on the tempus and the beak;(3)β-amyloid protein accumulated in the normal status woodpecker brain.This study reveals that:woodpecker brain morphology is well-adapted to impact,woodpecker heads display location-dependent protective performance,with beak and tempus regions having a better protective performance than the forehead and occiput,Nissl apoptosis appears in injured woodpecker brains,and that the accumulation ofβ-amyloid protein does not show a direct relationship with the injury state of woodpecker’s brain tissue in our study.

关键词： woodpecker biomechanics impact experiments impact resistance biological analysis

A New Behavior-Assisted Semantic Recognition Method for Smart Home

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中国通信：英文版 2020年第6期17卷 26-36页

作者： Weijin Jiang Xiaoliang liu Xingbao liu Yang Wang sijian Lv Fang Ye School of Computer Science and Technology Hunan University of Technology and BusinessChangsha 410205China Key Laboratory of Hunan Province for New Retail Virtual Reality Technology Hunan University of Technology and BusinessChangsha 410205China Institute of Big Data and Internet Innovation Mobile E-business Collaborative Innovation Center of Hunan ProvinceHunan University of Technology and BusinessChangsha 410205China School of Computer Science and Technology Wuhan University of TechnologyWuhan 430073China

In the recent Smart Home(SH)research work,intelligent service recommendation technique based on behavior recognition,it has been extensively preferred by researchers.However,most current research uses the Semantic recognition to construct the user’s basic behavior model.This method is usually restricted by environmental factors,the way these models are built makes it impossible for them to dynamically match the services that might be provided in the user environment.To solve this problem,this paper proposes a Semantic behavior assistance(Semantic behavior assistance,SBA).By joining the semantic model on the intelligent gateway,building an SA model,in this way,a logical Internet networks for smart home is established.At the same time,a behavior assistant method based on SBA model is proposed,among them,the user environment-related entities,sensors,devices,and user-related knowledge models exist in the logical interconnection network of the SH system through the semantic model.In this paper,the data simulation experiment is carried out on the method.The experimental results show that the SBA model is better than the knowledge-based pre-defined model.

关键词： smart home(SH) semantic behavior assistance(SBA) user behavior intention behavior assisted method

Evolutionary Dynamics Modeling of Symbolic Social Network Structure Equilibrium

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China Communications 2020年第10期17卷 229-240页

作者： Weijin Jiang sijian Lv Yirong Jiang Jiahui Chen Fang Ye Xiaoliang liu College of Computer and Information Engineering Hunan University of Technology and BusinessChangsha 410205China Key Laboratory of Hunan Province for New Retail Virtual Reality Technology Hunan University of Technology and BusinessChangsha 410205China Institute of Big Data and Internet Innovation Mobile E-business Collaborative Innovation Center of Hunan ProvinceHunan University of CommerceChangsha 410205China Tonghua Normal University Tonghua 134002China

The use of symbol attributes on the side of symbolic social networks to analyze,understand,and predict the topology,function,and dynamic behaviour of complex networks,and has important theoretical significance for personalized recommendations,attitude prediction,user feature analysis,and clustering and application value.However,due to the huge scale of online social networks,this poses a challenge to traditional symbolic social network analysis methods.Based on the theory of structural equilibrium,this paper studies the evolutionary dynamics of symbolic social networks,proposes the energy function of weak structural equilibrium theory,and uses the evolution of evolutionary algorithms to obtain the weak imbalance of the network.The simulation experiment results show that the calculation method in this paper can get the optimal solution faster.It provides an idea for the study of real and complex social networks.

关键词： incremental calculation symbolic network weak structure equilibrium evolutionary algorithms

Optimization of Load Balancing Algorithm for Virtual Machine Dynamic Migration under Mobile Cloud Computing

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China Communications 2020年第6期17卷 237-245页

作者： Weijin Jiang Fang Ye Shengjie Yang Wei liu Xiaoliang liu sijian Lv School of Computer Science and Technology Hunan University of Technology and BusinessChangsha 410205China Key Laboratory of Hunan Province for New Retail Virtual Reality Technology Hunan University of Technology and BusinessChangsha 410205China School of Computer Science and Technology Wuhan University of TechnologyWuhan 430073China

As one of the key technologies of cloud computing,the virtualization technology can virtualize all kinds of resources and integrate them into the unified planning of the cloud computing management platform.The migration of virtual machines is one of the important technologies of virtual machine applications.However,there are still many deficiencies in the implementation of load balancing by virtual machine dynamic migration in cloud computing.Traditional triggering strategy thresholds are mostly fixed.If there is an instantaneous peak,it will cause migration,which will cause a waste of resources.In order to solve this problem,based on improving the dynamic migration framework,this paper proposes node selection optimization algorithm and node load balancing strategy and designs a prediction module,which uses a one-time smooth prediction to avoid the shortcoming of peak load moment.The simulation experiments and conclusions analysis results show that the fusion algorithm has performance advantages obvious.

关键词： cloud computing dynamic migration load balance node selection load value prediction

基于核磁共振的煤岩注CO_(2)吸附置换CH4试验研究

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煤炭学报 2022年第10期47卷 3738-3745页

作者：郑司建桑树勋姚艳斌刘大锰刘世奇中国矿业大学碳中和研究院江苏徐州221008 中国矿业大学江苏省煤基温室气体减排与资源化利用重点实验室江苏徐州221008 中国矿业大学资源与地球科学学院江苏徐州221116 中国地质大学(北京)能源学院北京100083 煤层气开发利用国家工程研究中心煤储层物性实验室北京100083

注CO_(2)强化煤层气开采(CO_(2)-ECBM)过程的实质是吸附态甲烷在CO_(2)-CH_(4)竞争吸附作用下相变为游离态的过程,研究煤岩注CO_(2)吸附置换甲烷的动态化相变过程对于理解CO_(2)-ECBM微观作用机理和现场工程实施具有重要的理论意义和工... 详细信息

注CO_(2)强化煤层气开采(CO_(2)-ECBM)过程的实质是吸附态甲烷在CO_(2)-CH_(4)竞争吸附作用下相变为游离态的过程,研究煤岩注CO_(2)吸附置换甲烷的动态化相变过程对于理解CO_(2)-ECBM微观作用机理和现场工程实施具有重要的理论意义和工程价值。基于低场核磁共振技术开展一系列不同压力状态下游离态甲烷实验,首先建立游离态甲烷核磁共振标定系数;随后选取准噶尔盆地南缘长焰煤和沁水盆地无烟煤,基于自主研发搭建的低场核磁共振CO_(2)置换CH_(4)装置开展不同注入压力、不同温度约束条件下CO_(2)吸附置换CH_(4)核磁共振实验,建立吸附态甲烷核磁共振标定系数,并定量评价不同煤阶煤样CO_(2)注入压力及实验温度对置换甲烷微观作用机理。结果表明:煤岩甲烷吸附核磁共振T_(2)弛豫谱呈三峰分布,从左至右分别代表了吸附态甲烷(P1峰)、颗粒间游离态甲烷(P2峰)和自由空间游离态甲烷核磁共振响应(P3峰);随着CO_(2)注入气体压力的增大,煤岩吸附态甲烷核磁共振信号幅度明显减小;而随着CO_(2)置换甲烷实验温度的增加,游离态甲烷核磁共振信号幅度(P2和P3峰)呈下降趋势。煤岩注CO_(2)吸附置换CH_(4)过程中,最大甲烷吸附量随CO_(2)注入气体压力的变化呈明显两阶段分布特征:低压阶段,最大甲烷吸附量随CO_(2)压力明显下降;高压阶段最大甲烷吸附量的变化趋于平缓;同时,煤储层温度的升高会降低煤样CO_(2)置换甲烷的能力。

关键词：煤层气核磁共振 CO_(2)-ECBM 甲烷吸附能力 CO_(2)地质封存

NOTE STUDY ON THE COMMERCIAL CULTIVATION OF GRACILA RIA IN SOUTH CHINA

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Chinese Journal of Oceanology and Limnology 1987年第3期5卷 281-283页

作者：刘思俭 Zhanjiang Fisheries College Guangdong China

An important raw material for making agar-agar is the seaweed Gracilaria, which is distributed worldwide but grows mostly in the natural state in warm tropic and subtropic zones. Some countries have tried in small scale to cultivate the seaweed, but only along the coasts of South China has it been done successfully on a large commercial scale （in pond and raft culture）.

关键词： NOTE STUDY ON THE COMMERCIAL CULTIVATION OF GRACILA RIA IN SOUTH CHINA

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节能技术在绿色建筑工程中的应用分析

中国厨卫 2024年第2期23卷 214-216页

作者：刘大龙济南四建建设发展有限公司济南250000

传统的建筑设计方法往往忽视了能源效率,导致建筑物的能耗过高,给环境带来了严重的污染。节能技术的应用是一种重要的解决方案,其通过优化建筑结构、改善采光系统、提高通风换气效率等多种措施,可以显著降低建筑物的能源消耗。文章分析... 详细信息

传统的建筑设计方法往往忽视了能源效率,导致建筑物的能耗过高,给环境带来了严重的污染。节能技术的应用是一种重要的解决方案,其通过优化建筑结构、改善采光系统、提高通风换气效率等多种措施,可以显著降低建筑物的能源消耗。文章分析了节能技术在绿色建筑工程中的应用及效益,以期为相关领域的发展提供参考。

关键词：节能技术绿色建筑能源消耗

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中国煤炭甲烷管控与减排潜力

煤田地质与勘探 2023年第1期51卷 159-175页

作者：桑树勋刘世奇韩思杰郑司建刘统周效志王冉王猛中国矿业大学江苏省煤基温室气体减排与资源化利用重点实验室江苏徐州221008 中国矿业大学碳中和研究院江苏徐州221008 中国矿业大学资源与地球科学学院江苏徐州221116

甲烷是最主要的非二氧化碳温室气体,受到越来越多的重视。煤炭甲烷是我国最主要的甲烷排放源类型,我国也是世界煤炭甲烷排放量最大的国家,煤炭甲烷的有效排放管控与高效开发利用兼具温室气体减排、能源气体开发利用和灾害气体防治三重... 详细信息

甲烷是最主要的非二氧化碳温室气体,受到越来越多的重视。煤炭甲烷是我国最主要的甲烷排放源类型,我国也是世界煤炭甲烷排放量最大的国家,煤炭甲烷的有效排放管控与高效开发利用兼具温室气体减排、能源气体开发利用和灾害气体防治三重意义。基于系统调研和研究工作积累,概述了煤炭甲烷排放管控背景,总结了全球与代表性国家煤炭甲烷排放及其管控现状,阐释了我国煤炭甲烷开发利用与排放管控历程及发展趋势,讨论和前瞻了我国煤炭甲烷减排路径与减排潜力。已有研究工作表明:我国煤炭甲烷排放主要来自煤炭地下开采风排瓦斯,且较长时期内仍是我国煤炭甲烷的主要来源;随着我国关闭矿井增多,由此产生的关闭矿井甲烷排放量呈增长趋势,是我国煤炭甲烷不容忽视的来源。随着碳中和目标的提出,温室气体减排的政策导向逐渐成为我国煤炭甲烷排放管控的重点,明确了煤炭甲烷减排方向。我国煤炭甲烷排放管控形成了以煤层气勘探开发利用、煤矿瓦斯抽采利用、关闭/废弃矿井瓦斯抽采利用、乏风瓦斯利用等全浓度利用,煤炭采前、采中和采后全周期利用为特征的关键技术路径。我国煤炭甲烷排放管控面临巨大压力和严峻挑战,诸多政策、机制、技术问题亟待破解。突破复杂地质条件适配性煤层气高效勘探开发技术体系,精准化、数字化、智能化、低碳化煤矿瓦斯高效抽采技术体系,关闭/废弃矿井煤炭甲烷减排管控与利用技术体系,全浓度瓦斯综合利用技术体系等是主要发展方向。

关键词：煤炭甲烷管控煤矿瓦斯煤层气关闭矿井甲烷减排潜力

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碳中和地质技术及其煤炭低碳化应用前瞻

煤炭学报 2022年第4期47卷 1430-1451页

作者：桑树勋袁亮刘世奇韩思杰郑司建刘统周效志王冉中国矿业大学江苏省煤基温室气体减排与资源化利用重点实验室江苏徐州221008 中国矿业大学碳中和研究院江苏徐州221008 中国矿业大学资源与地球科学学院江苏徐州221116 中国矿业大学低碳能源与动力工程学院江苏徐州221116 安徽理工大学深部煤矿采动响应与灾害防控国家重点实验室安徽淮南232001

概述了碳中和地质技术的形成背景及其在碳中和知识体系中的定位,提出了碳中和地质技术的概念和内涵,评述了关键碳中和地质技术的国内外进展,分析讨论和前瞻了碳中和地质技术在煤炭低碳化开发利用进程中的重要应用方向、应用模式和发展... 详细信息

概述了碳中和地质技术的形成背景及其在碳中和知识体系中的定位,提出了碳中和地质技术的概念和内涵,评述了关键碳中和地质技术的国内外进展,分析讨论和前瞻了碳中和地质技术在煤炭低碳化开发利用进程中的重要应用方向、应用模式和发展前景。已有研究工作表明:作为碳中和知识体系的碳中和科学与工程交叉学科正在形成,在地球科学基本背景上碳中和相关学科群交叉融通形成了当前碳中和科学与工程主要研究领域和技术发展方向,碳中和地质技术是碳中和科学与工程交叉学科的重要组成部分,也是实现碳中和目标的关键技术;二氧化碳捕集利用与封存技术、生态地质与碳增汇技术、煤层中甲烷减排与资源化开发利用技术、化石能源低碳化开发利用地质技术、地热资源高效勘查与开发技术、新能源高效安全开发利用地质保障技术、矿化固碳地质技术和地球工程等构成了碳中和地质技术的当前核心内涵;以CCUS(Carbon Capture,Utilization and Storage,碳捕集、利用与封存)大规模集群化部署与全流程技术、煤层甲烷接续高效抽采与低浓度瓦斯(含乏风瓦斯)利用技术、煤型关键金属探采选冶全流程技术、矿区生态地质修复重构与碳增汇技术、干热岩型地热地质新能源勘查开发利用技术、供能蓄能一体化水电和核电等新能源开发利用地质工程保障技术、太阳辐射管理前沿技术探索为代表,关键碳中和地质技术已取得重要进展;CCUS将成为低排放燃煤发电、煤转化、煤制氢、煤制特种燃料、煤基材料等煤炭低碳洁净高效利用关键技术的关键,煤炭基地或煤矿区CCUS以煤基CO_(2)源、煤系CO_(2)地质碳汇、CO_(2)矿化固定与采空区充填封存为技术特色且具有紧迫需求;从原位煤层气高效勘探开发、煤矿瓦斯井下-地面协同高效抽采、关闭矿井瓦斯高效抽采到低浓度和乏风瓦斯高效利用,煤层甲烷高效抽采利用与减排综合技术应用模式将得到快速发展和推广;通过覆岩变形控制与地表植被生态系统保持、水资源与区域生态系统保护、采动裂隙与温室气体大气排放控制、数字矿山与节能提效等方式发展和应用绿色智慧矿山地质保障技术,实现煤炭生产过程减碳;应用煤矿区生态修复与碳增汇技术,实现煤矸石处置与减污降碳协同、塌陷区治理与碳增汇、土地整治利用与增汇固碳;加快应用和发展煤系共伴生资源共探共采与碳减排技术,实现煤系气、煤型关键金属高效勘查开发利用突破,对服务我国低碳洁净高效安全新能源体系构建和实现源头减碳意义重大。

关键词：碳中和地质技术煤炭低碳化概念与内涵关键进展应用模式