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Science China Materials 2024年第11期67卷 3757-3758页

作者： haixing Meng Ying Li School of Integrated Circuits and Electronics Beijing Institute of Technology

X-ray detection technology plays an important role in various fields such as medical diagnosis, security inspection, nondestructive testing, space exploration, and scientific research. In recent years, X-ray direct detection has become a research hotspot due to its inherent advantages, such as high spatial resolution and simple configuration [1,2].

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An index system for evaluation of agriculture green development at county level in China

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Frontiers of Agricultural Science and Engineering 2024年第1期11卷 55-68页

作者： Xiao XU Yanxiang JIA Yuan FENG haixing ZHANG Wen XU Qichao ZHU Beautiful Rural Construction Center Quzhou 324003China College of Resources and Environment China Agricultural UniversityBeijing 100193China National Academy of Agriculture Green Development China Agricultural UniversityBeijing 100193China

Agriculture green development(AGD)has become an unavoidable choice to address the unique national circumstances of *** study established a county-level AGD evaluation index system,comprised three dimensions,food production,ecological environment and socioeconomic development,using 20 *** assessment delved into historical trend and current situation,utilizing Spearman rank correlation analysis to analyze trade-off and synergy relationships,using Quzhou County,Hebei Province as a case *** main findings were in four ***,the index for AGD in Quzhou County increased by 58.9%from 1978 to *** major contribution were the social economy(65.8%)and food production(53.5%),whereas the ecological environment was found to have had a negative ***,in 2019,the AGD index was only 56.4,indicating substantial potential for improvement relative to the target value.A notable difference in scores existed between the three dimensions,with the order being ecological environment(66.3.>food production(61.7)>socioeconomic(41.3..Also,90%of the indicators did not reach the target ***,relationship analysis of the indicators revealed that the synergistic effect exceeded the trade-off ***,46.3.of the indicators had no significant relationship,3..3.had a synergistic relationship,and 18.4%had a trade-off ***,interdimensional indicator relationships exhibited a trade-off effect between the ecological environment and both food production and socioeconomic ***,a positive trend of synergy between production and ecology has emerged since *** conclusion,the quantitative evaluation index system exposed the unbalanced development and significant potential relative to the target value of AGD in Quzhou County,despite notable progress.

关键词： Agriculture green development index system quantitative evaluation Spearman correlation analysis

Tilapia Head Glycolipid Alleviates Indomethacin-Induced Gastric Ulcer via Regulating Oxidative Stress and Inflammation Through COX/PGE2 Signaling Pathway in Adult Rats

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Journal of Ocean University of China 2024年第3期23卷 743-754页

作者： WANG Bohui WU haixing SHAO Mingyang JIANG Mengqi SU Ruiheng GAO Xia XIA Guanghua SHI Haohao SHEN Xuanri Hainan Engineering Research Center of Aquatic Resources Efficient Utilization in South China Sea College of Food Science and TechnologyHainan UniversityHaikou 570228China Collaborative Innovation Center of Marine Food Deep Processing Dalian Polytechnic UniversityDalian 116000China College of Food and Engineering Hainan Tropical Ocean UniversitySanya 572022China

The aim of this experiment was to investigate the ameliorative effect and molecular mechanism of tilapia head glycolipid(TH-GL)on indomethacin(IDM)-induced gastric ulcer in male Sprague Dawley(SD)*** gastric ulcer model was established by oral administration of 3.mgkg^(-1) IDM after 7 days of TH-GL or omeprazole(OME)administration in *** the macroscopic gastric injury symptoms,gastric mucosa protective factor cyclooxygenase 1(COX-1),cyclooxygenase 2(COX-2),prostaglandin E_(2)(PGE_(2)),the levels of oxidative stress,and inflammatory cytokine expression levels in the rats were *** experimental results showed that multiple ulcers appeared on the gastric surface of the rats in the model *** to the model group,TH-GL significantly alleviated gastric ulcers and reduced the gastric damage index in *** addition,TH-GL significantly promoted the expression of constitutive enzyme COX-1 while inhibited the expression of inducible enzyme COX-2,and make PGE2 maintain at normal ***-GL also inhibited oxidative stress and inflammatory responses,increased superoxide dismutase(SOD)activity and glutathione(GSH)content,decreased the level of malondialdehyde(MDA)and the content of pro-inflammatory *** conclusion,these results suggested that TH-GL could maintain the expression levels of COX-1 and PGE2 while inhibit the expression of COX-2 in the gastric of rat and then prevent IDM-induced gastric ulcer,which may be related to the regulation of oxidative stress and inflammatory ***,TH-GL might be a new option for the prevention of gastric diseases induced by IDM.

关键词： tilapia head glycolipid indomethacin gastric ulcer oxidative stress inflammation

A cloud-edge-device collaborative offloading scheme with heterogeneous tasks and its performance evaluation

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Frontiers of Information Technology & Electronic Engineering 2024年第5期25卷 664-684页

作者： Xiaojun BAI Yang ZHANG haixing WU Yuting WANG Shunfu JIN School of Information Science and Engineering Yanshan UniversityQinhuangdao 066004China Key Laboratory for Computer Virtual Technology and System Integration of Hebei Province Yanshan UniversityQinhuangdao 066004China

How to collaboratively offload tasks between user devices,edge networks(ENs),and cloud data centers is an interesting and challenging research *** this paper,we investigate the offoading decision,analytical modeling,and system parameter optimization problem in a collaborative cloud-edge device environment,aiming to trade off different performance *** to the differentiated delay requirements of tasks,we classify the tasks into delay-sensitive and delay-tolerant *** meet the delay requirements of delay-sensitive tasks and process as many delay-tolerant tasks as possible,we propose a cloud-edge device collaborative task offoading scheme,in which delay-sensitive and delay-tolerant tasks follow the access threshold policy and the loss policy,*** establish a four-dimensional continuous-time Markov chain as the system *** using the Gauss-Seidel method,we derive the stationary probability distribution of the system ***,we present the blocking rate of delay-sensitive tasks and the average delay of these two types of *** experiments are conducted and analyzed to evaluate the system performance,and numerical simulations are presented to evaluate and validate the effectiveness of the proposed task offloading ***,we optimize the access threshold in the EN buffer to obtain the minimum system cost with different proportions of delay-sensitive tasks.

关键词： Edge computing Ofloading scheme Cloud-edge device collaboration Markov chain Cost function

China's agriculture green development: from concept to actions

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Frontiers of Agricultural Science and Engineering 2024年第1期11卷 20-34页

作者： haixing ZHANG Yuan FENG Yanxiang JIA Pengqi LIU Yong HOU Jianbo SHEN Qichao ZHU Fusuo ZHANG National Academy of Agriculture Green Development China Agricultural UniversityBeijing 100193China College of Resources and Environmental Sciences China Agricultural UniversityBeijing 100193China Environmental Economics and Natural Resources Group Wageningen University and ResearchP.O.Box 81306700 EW Wageningenthe Netherlands

China has initiated a green transformation plan in 2015, which was soon applied to agriculture, known as the agriculture green development(AGD)initiative, with the goals of achieving food security, high resource use efficiency, and an ecofriendly environment. To assess the agricultural transformation from 1997 to 2020, this paper proposes a national-scale indicator system consisting three dimensions(socioeconomic, food production and eco-environmental) and ten sub-dimensions to quantify the AGD *** study showed that AGD score in China was at a moderate level during 1997–2010, scoring 40 out of 100. During this stage, decreased scores in the sub-dimensions of resource consumption, environmental quality, and environmental cost have offset the improvement in the socioeconomic dimension, resulting in fluctuated scores around 40. In the second stage(2011–2020), China's AGD score improved but still at moderate level, scoring an average of 46.3. with each dimension increasing by 5.3.–25.0%. These results indicate that China has made progress in the agricultural transformation, transitioning from conceptualization to actions through the implementation of various policies and projects. However, the study emphasizes the need for more effort to address the insufficient and unbalanced development, along with the growing eco-environmental challenges, especially the trade-offs among dimensions.

关键词： Agricultural transformation agriculture green development historical trend indicator system theoretical conception

Proposal for sequential Stern-Gerlach experiment with programmable quantum processors

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Chinese Physics B 2024年第2期33卷 131-136页

作者：胡孟军缪海兴张永生 Beijing Academy of Quantum Information Sciences Beijing 100193China State Key Laboratory of Low Dimensional Quantum Physics Department of PhysicsTsinghua UniversityBeijing 100084China Laboratory of Quantum Information University of Science and Technology of ChinaHefei 230026China Synergetic Innovation Center of Quantum Information and Quantum Physics University of Science and Technology of ChinaHefei 230026China Hefei National Laboratory University of Science and Technology of ChinaHefei 230088China

The historical significance of the Stern–Gerlach(SG)experiment lies in its provision of the initial evidence for space *** time,its sequential form has evolved into an elegant paradigm that effectively illustrates the fundamental principles of quantum *** date,the practical implementation of the sequential SG experiment has not been fully *** this study,we demonstrate the capability of programmable quantum processors to simulate the sequential SG *** specific parametric shallow quantum circuits,which are suitable for the limitations of current noisy quantum hardware,are given to replicate the functionality of SG devices with the ability to perform measurements in different ***,it has been demonstrated that Wigner’s SG interferometer can be readily implemented in our sequential quantum *** the utilization of the identical circuits,it is also feasible to implement Wheeler’s delayed-choice *** propose the utilization of cross-shaped programmable quantum processors to showcase sequential experiments,and the simulation results demonstrate a strong alignment with theoretical *** the rapid advancement of cloud-based quantum computing,such as BAQIS Quafu,it is our belief that the proposed solution is well-suited for deployment on the cloud,allowing for public *** findings not only expand the potential applications of quantum computers,but also contribute to a deeper comprehension of the fundamental principles underlying quantum theory.

关键词： sequential Stern-Gerlach quantum circuit quantum processor

Advanced wastewater treatment with microalgae-indigenous bacterial interactions

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Environmental Science and Ecotechnology 2024年第4期20卷 198-207页

作者： Xue Li Shengnan Li Peng Xie Xi Chen Yuhao Chu haixing Chang Jian Sun Qing Li Nanqi Ren Shih-Hsin Ho State Key Laboratory of Urban Water Resource and Environment School of EnvironmentHarbin Institute of TechnologyHarbin150090PR China College of Chemistry and Chemical Engineering Chongqing University of TechnologyChongqing400054PR China Central Southern China Municipal Engineering Design and Research Institute Co. LtdWuhan430010PR China

Microalgal-indigenous bacterial wastewater treatment(MBWT)emerges as a promising approach for the concurrent removal of nitrogen(N)and phosphorus(P).Despite its potential,the prevalent use of MBWT in batch systems limits its broader ***,the success of MBWT critically depends on the stable self-adaptation and synergistic interactions between microalgae and indigenous bacteria,yet the underlying biological mechanisms are not fully *** we explore the viability and microbial dynamics of a continuous flow microalgae-indigenous bacteria advanced wastewater treatment system(CFMBAWTS)in processing actual secondary effluent,with a focus on varying hydraulic retention times(HRTs).The research highlights a stable,mutually beneficial relationship between indigenous bacteria and *** and indigenous bacteria can create an optimal environment for each other by providing essential cofactors(like iron,vitamins,and indole-3.acetic acid),oxygen,dissolved organic matter,and *** collaboration leads to effective microbial growth,enhanced N and P removal,and energy *** study also uncovers crucial metabolic pathways,functional genes,and patterns of microbial ***,the effluent NH4 t-N and P levels complied with the Chinese national Class-II,Class-V,Class-IA,and Class-IB wastewater discharge standards when the HRT was reduced from 15 to 6 *** results,including the highest rates of CO2 fixation(1.23.g L^(-1)),total energy yield(3..3. kJ L^(-1)),and the maximal lipid(3..91%)and carbohydrate(41.91%)content,were observed at an HRT of 15 ***,this study not only confirms the feasibility of CFMBAWTS but also lays a crucial foundation for enhancing our understanding of this technology and propelling its practical application in wastewater treatment plants.

关键词： Continuous flow systems Microalgal-indigenous bacterial interactions Advanced treatment Self-adaptation mechanisms Nutrient removal mechanisms

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神东矿区煤矿掘进工艺及装备智能化技术研究

煤炭工程 2024年第3期56卷 10-14页

作者：赵海兴中国煤炭科工集团太原研究院有限公司山西太原030006 山西天地煤机装备有限公司山西太原030006 煤矿采掘机械装备国家工程实验室山西太原030006

为了实现神东煤炭集团煤矿巷道掘进由人控到数控、由自动到智能的全面提速,分析了神东矿区煤矿单巷掘进、双巷掘进、大断面切眼贯通的工艺及设备配套技术现状,研究了智能化掘锚一体机、智能化连续采煤机、智能掘锚一体机惯性导航技术、... 详细信息

为了实现神东煤炭集团煤矿巷道掘进由人控到数控、由自动到智能的全面提速,分析了神东矿区煤矿单巷掘进、双巷掘进、大断面切眼贯通的工艺及设备配套技术现状,研究了智能化掘锚一体机、智能化连续采煤机、智能掘锚一体机惯性导航技术、成套智能化掘进技术、近端AI识别和远程云控制技术等掘进设备智能化技术,同时研究了预埋孔钻进机器人、智能化管路抓举设备、智能化防爆柴油开槽机、电缆自动收放车辆、智能清仓机器人等掘进辅助作业设备及技术。在此基础上给出神东煤炭集团煤矿掘进智能化发展建议,即:加快推广掘锚一体化生产工艺、发展5G无线网络技术、完善透明地质保障系统等,从根源上解决智能设备自主可控、智能互联、安全可信等关键问题。

关键词：双巷掘进智能化掘进设备柔模支护掘锚一体化透明地质

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铁铬液流电池专利技术分析

电源技术 2024年第5期48卷 812-817页

作者：崔海星马莉国家知识产权局专利局专利审查协作江苏中心江苏苏州215011

从专利角度梳理了铁铬液流电池专利申请趋势、技术输出国和目标市场分布、主要申请人、发明人、技术改进热点分布以及关键材料研究进展。结果表明,近年来全球铁铬液流电池相关专利申请量保持稳定增长,中国申请量近五年增长迅速。中国、... 详细信息

从专利角度梳理了铁铬液流电池专利申请趋势、技术输出国和目标市场分布、主要申请人、发明人、技术改进热点分布以及关键材料研究进展。结果表明,近年来全球铁铬液流电池相关专利申请量保持稳定增长,中国申请量近五年增长迅速。中国、日本和美国是主要的专利技术输出国和目标市场,全球主要申请人、近五年活跃申请人和发明人也主要集中在上述国家,其中住友电气株式会社和中国科学院大连化学物理研究所相关专利申请量最大。电极材料、电解液和离子交换膜这些关键材料是技术改进的热点。电极材料方面,主要改进技术手段包括碳基材料的优选,对碳基材料采用氧化法、表面催化剂法进行表面修饰改性,或者开发新型电极材料;电解液方面,主要通过电解液体系的优化,在电解液中加入添加剂,或者将铬离子与络合剂形成络合物进行技术改进;离子交换膜的改进,则主要通过特定结构树脂的选择,在树脂中加入添加剂,采用多层复合结构膜或者优化制备方法实现。

关键词：铁铬液流电池专利知识产权

根系对寒温带冻土区兴安落叶松林土壤碳通量的影响

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生态学报 2024年第10期44卷 4319-4333页

作者：李海兴满秀玲高明磊东北林业大学林学院哈尔滨150040 森林生态系统可持续经营教育部重点实验室哈尔滨150040

土壤碳通量是森林生态系统碳循环的重要组成部分,根系对土壤碳通量起着关键作用,研究根系对土壤碳通量的影响对寒温带冻土区温室气体研究有重要意义。以杜香-兴安落叶松林(DXL)、杜鹃-兴安落叶松林(DJL)和苔藓-兴安落叶松林(TXL)为研究... 详细信息

土壤碳通量是森林生态系统碳循环的重要组成部分,根系对土壤碳通量起着关键作用,研究根系对土壤碳通量的影响对寒温带冻土区温室气体研究有重要意义。以杜香-兴安落叶松林(DXL)、杜鹃-兴安落叶松林(DJL)和苔藓-兴安落叶松林(TXL)为研究对象,通过壕沟法进行断根处理,采用便携式土壤呼吸仪G43.1对土壤碳通量进行日动态和月动态变化测定与分析。结果表明:6—11月,断根对DXL和DJL土壤CH_(4)的吸收起抑制作用,降幅分别为15.16%—54.3.%和11.26%—3..84%,对TXL土壤CH_(4)的排放起促进作用,增幅为19.22%—75.52%;对3.类型兴安落叶松林土壤CO_(2)的排放均起抑制作用,其中对TXL影响最大,对土壤CO_(2)降幅为3..29%—87.62%。断根对DXL和TXL土壤CH_(4)的影响在8月最为显著,增幅分别为-54.3.%和75.52%,DJL在11月影响最为显著,降幅为3..84%。断根对3.类型兴安落叶松林土壤CO_(2)排放的影响在6—11月均达到显著程度,其中在11月最为显著,降幅为54.94%—87.62%。断根对3.类型兴安落叶松林土壤CH_(4)通量日动态影响差异不显著;而对土壤CO_(2)通量的影响显著,其中在14:00—18:00影响最为显著,降幅为3..87%—62.26%。土壤温度和空气温度是根系影响土壤碳通量变化的主要因子,断根处理增强了土壤温度对其日变化和月变化的影响,减弱了空气温度对其日动态的影响。这表明,根系自养产生的土壤碳通量可能在日动态变化中更活跃,而在月动态变化中更稳定。

关键词： CH_(4)通量 CO_(2)通量日动态月动态断根处理

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