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Real-time safety control of shield attitude considering tunneling efficiency 认领 引用
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作者 Tugen FENG Jinjian HU +3 位作者 Jian ZHANG Guoping REN Yongbo LI Xiaopeng ZHAO 《ENGINEERING Structure and Civil Engineering》 SCIE EI CAS CSCD 2026年第1期80-95,共16页
Shield attitude control is a critical aspect that must be continuously monitored during shield tunneling.To achieve scientifically rational settings for shield tunneling parameters,this study constructed multiple mach... Shield attitude control is a critical aspect that must be continuously monitored during shield tunneling.To achieve scientifically rational settings for shield tunneling parameters,this study constructed multiple machine learning prediction models,including shield attitude deviations and tunneling speed,and optimized the hyperparameters of these models using Bayesian algorithms.Subsequently,a constrained grey wolf optimization(GWO)algorithm was employed to establish a real-time safety control method for attitude that considers tunneling efficiency,by dynamically updating the upper and lower bounds for adjustable parameters.The results indicate that the k-nearest neighbors(KNN)model achieved the highest prediction accuracy;however,due to its specific algorithmic principles,KNN is unsuitable for optimization tasks.Embedding the extreme gradient boosting model into the GWO algorithm yielded the best attitude control performance:the absolute attitude deviations were reduced by an average of 45.1%compared to actual values,while the rate of change for adjustable parameters did not exceed 30%.This approach ensures safety and tunneling efficiency during attitude correction and exhibits universal applicability.Compared with other optimization algorithms,GWO demonstrated significant advantages in both optimization effectiveness and computational time. 展开更多
关键词 shield attitude tunneling speed K-nearest neighbors support vector regression extreme gradient boosting grey wolf optimization
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Mechanical Energy Drives the Growth and Carbon Fixation of Electroactive Microorganisms 认领 引用 被引量：3
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作者 Guoping Ren Jie Ye +4 位作者 Lu Liu Andong Hu Kenneth H.Nealson Christopher Rensing Shungui Zhou 《Engineering》 SCIE EI CSCD 2025年第4期194-203,共10页
Phototrophy and chemotrophy are two dominant types of microbial metabolism.However,to date,the potential of the ubiquitous and versatile mechanical energy as a renewable energy source to drive the growth of microorgan... Phototrophy and chemotrophy are two dominant types of microbial metabolism.However,to date,the potential of the ubiquitous and versatile mechanical energy as a renewable energy source to drive the growth of microorganisms has remained unknown and not utilized.Here,we present evidence in favor of a previously unidentified metabolic pathway,in which the electronic energy produced from mechanical energy by the piezoelectric materials is used to support the growth of microorganisms.When electroactive microorganism Rhodopseudomonas palustris(R.palustris;with barium titanate nanoparticles)was mechanically stirred,a powerful biohybrid piezoelectric effect(BPE)enabled sustainable carbon fixation coupled with nitrate reduction.Transcriptomic analyses demonstrated that mechanical stirring of the bacteria–barium titanate biohybrid led to upregulation of genes encoding functions involved in electron and energy transfer in R.palustris.Studies with other electroactive microorganisms suggested that the ability of microbes to utilize BPE may be a common phenomenon in the microbial world.Taken together,these findings imply a long-neglected and potentially important microbial metabolic pathway,with potential importance to microbial survival in the energy-limited environments. 展开更多
关键词 Mechanical energy Biohybrid piezoelectric effect Microbial metabolism Carbon fixation Nitrate reduction
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Phosphate recovery with granular acid-activated neutralized red mud:Fixed-bed column performance and breakthrough curve modelling 认领 引用 被引量：4
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作者 Andong Hu Guoping Ren +3 位作者 Jiangang Che Yulin Guo Jie Ye Shungui Zhou 《Journal of Environmental Sciences》 SCIE EI CAS CSCD 2020年第4期78-86,共9页
Granular acid-activated neutralized red mud(AaN-RM)has been successfully prepared with good chemical stability and physical strength.However,its potential for industrial application remains unknown.Therefore,the perfo... Granular acid-activated neutralized red mud(AaN-RM)has been successfully prepared with good chemical stability and physical strength.However,its potential for industrial application remains unknown.Therefore,the performance of granular AaN-RM for phosphate recovery in a fixed-bed column was investigated.The results demonstrated that the phosphate adsorption performance of granular AaN-RM in a fixed-bed column was affected by various operational parameters,such as the bed depth,flow rate,initial solution pH and initial phosphate concentration.With the optimal empty-bed contact time(EBCT)of 24.27 min,the number of processed bed volumes and the phosphate adsorption capacity reached 496.95 and 84.80 mg/g,respectively.Then,the saturated fixed-bed column could be effectively regenerated with a0.5 mol/L HCl solution.The desorption efficiency remained as high as 83.45%with a low weight loss of 3.57%in the fifth regeneration cycle.In addition,breakthrough curve modelling showed that a 5-9-1 feed-forward artificial neural network(ANN)could be effectively applied for the optimization of the fixed-bed adsorption system;the coefficient of determination(R^2)and the root mean square error(RMSE)evaluated on the validation-testing data were 0.9987 and 0.0183,respectively.Therefore,granular AaN-RM fixed-bed adsorption exhibits promising potential for phosphate removal and recovery from polluted water. 展开更多
关键词 Red mud Fixed-bed column Bed volume Artificial neural network Regeneration
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基于生态系统服务供需关系的农业生态管理分区 认领 引用 被引量：55
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作者 管青春 郝晋珉 +2 位作者 许月卿 任国平 康蕾 《资源科学》 CSSCI CSCD 北大核心 2019年第7期1359-1373,共15页
生态系统服务是人类赖以生存和发展的基础,厘清生态系统服务供给与需求的关系并对其分区管控有助于提升人类福祉。本文针对如何表征农业生态系统服务供需状态及其空间异质性问题,采用基于LUCC的生态系统服务矩阵,构建供需匹配度和供需... 生态系统服务是人类赖以生存和发展的基础,厘清生态系统服务供给与需求的关系并对其分区管控有助于提升人类福祉。本文针对如何表征农业生态系统服务供需状态及其空间异质性问题,采用基于LUCC的生态系统服务矩阵,构建供需匹配度和供需协调度2个指标,并对2015年河北省曲周县村级行政单元农业生态系统服务状态和可持续能力进行评判;运用局部空间自相关分析,以局部空间集聚特征为依据,通过空间叠加产生的组合类型划分曲周县的农业生态管理区,并提出针对分区的管理措施。研究结果表明:①供需匹配度和供需协调度指标能实现区域内农业生态系统服务的整体评价,且具有可应用性和普适性。②2015年曲周县生态系统服务供需匹配度和协调度空间差异明显。区域供需匹配度为1.0647,处于一般均衡等级,表明2015年曲周县生态系统服务供需处于均衡状态;区域供需协调度为0.8977,处于良好协调状态,表明区域生态系统服务可持续能力较高。③将曲周县339个村级行政单元划分为4个一级生态管理区和12个二级生态管理亚区。提出的管理措施如下:生态保育区实施严格保护,禁止大规模建设;生态培育区实施综合保护,提升投产效益;生态改良区实施综合改良,促使生态环境转好;生态重构区实施整体生态整治和针对性生态重构。该研究结果可为区域的生态系统服务精细化管理、差异化保护提供思路。 展开更多
关键词 农业生态系统 生态系统服务 供需匹配度 供需协调度 空间自相关 分区 河北省曲周县
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Microbial energy from ambient physical fields 认领 引用 被引量：1
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作者 Shungui Zhou Guoping Ren +3 位作者 Bing Li Yong Yuan Jiangtao Gao Christopher Rensing 《Science Bulletin》 SCIE EI CAS CSCD 2026年第12期2933-2936,共4页
The understanding of microbial energy acquisition is currently being reshaped.Traditional microbiology has centered on two primary energy acquisition modes:phototrophy,which captures light energy,and chemotrophy,which... The understanding of microbial energy acquisition is currently being reshaped.Traditional microbiology has centered on two primary energy acquisition modes:phototrophy,which captures light energy,and chemotrophy,which extracts energy by oxidizing chemical compounds(Fig.1a).While these modes constitute the cornerstone of microbial bioenergetics and the evolution of metabolism,recent discoveries have revealed that microbes can also use alternative energy acquisition strategies that extend beyond this classical dichotomy. 展开更多
关键词 captures light energyand ambient physical fields microbial energy oxidizing chemical compounds fig energy acquisition microbial bioenergetics extracts energy chemotrophy
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Piezoelectrotrophy:A new paradigm for microbial energy acquisition 认领 引用
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作者 Shungui Zhou Xiang Tang +1 位作者 Guoping Ren Jiangtao Gao 《National Science Open》 CSCD 2026年第2期76-100,共25页
This review introduces piezoelectrotrophy as a novel paradigm in microbial energy acquisition,complementing phototrophy,chemotrophy,and electrotrophy.We define piezoelectrotrophy as the process enabling microorganisms... This review introduces piezoelectrotrophy as a novel paradigm in microbial energy acquisition,complementing phototrophy,chemotrophy,and electrotrophy.We define piezoelectrotrophy as the process enabling microorganisms to harness mechanical energy via piezoelectric mechanisms,converting it into electrical energy for cellular metabolism.This expands microbial energy utilization beyond light and chemical sources to ubiquitous mechanical energy in natural systems.We propose a framework for piezoelectromicrobiology,emphasizing the nano-bio interface for electron generation,transfer,and uptake.The concept carries profound ecological and evolutionary implications,from cellular metabolism to ecosystem dynamics.We explore applications in environmental remediation,sensing technologies,bioelectronics,and medical implants.A roadmap addresses methodological challenges and suggests validation experiments.Piezoelectrotrophy offers a conceptual framework for investigating mechanical energy use in microbial systems,providing testable hypotheses for energy acquisition in dark,oligotrophic environments,biogeochemical cycles,microbial evolution,and biotechnology.Rigorous experimental validation is essential to confirm its ecological relevance and energetic viability. 展开更多
关键词 piezoelectrotrophy microbial energetics piezoelectricity mechanical energy extracellular electron transfer bioelectrochemistry
场效应微生物学:从光能到场能的跨越 认领 引用
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作者 任国平 胡启昌 周顺桂 《科学通报》 EI CAS CSCD 北大核心 2026年第18期4178-4191,共14页
能量供给是地球上所有生命活动的基石.微生物作为驱动地球生命引擎的隐形“巨匠”,其能量供给来源却长期局限于光能与化能两种类型,难以完整阐释极端生境下生命存续演化及元素生物地球化学循环过程.近年来,热、电、机械、水伏等场能驱... 能量供给是地球上所有生命活动的基石.微生物作为驱动地球生命引擎的隐形“巨匠”,其能量供给来源却长期局限于光能与化能两种类型,难以完整阐释极端生境下生命存续演化及元素生物地球化学循环过程.近年来,热、电、机械、水伏等场能驱动的微生物能量利用途径的发现,催生了“场效应微生物学”这一新兴交叉方向,为微生物能量利用研究提供全新视角.本文系统地梳理了微生物能量来源从光能、化能到场能的演化脉络,明确场效应微生物学的概念、溯源与核心内涵;阐述场能的环境分布、能量转化本质及微生物电子传输路径,剖析其在极端环境生命维持、地球物质循环调控中的地学价值;最后探讨该研究领域的科学意义,展望其在环境治理、生物能源开发等应用前景,并提出未来研究方向与核心挑战.该研究领域拓展了传统认知范畴,有助于深化对地球圈层互作及生命-环境协同演化的理解,也为微生物学与地学的交叉研究提供了新的探索视角. 展开更多
关键词 场效应 场能 电子传输 生物地球化学循环 微生物能量利用
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Erratum to“All-Biobased Hydrovoltaic-Photovoltaic Electricity Generators for All-Weather Energy Harvesting” 认领 引用
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作者 Guoping Ren Qichang Hu +3 位作者 Jie Ye Andong Hu Jian Lü Shungui Zhou 《Research》 SCIE EI CSCD 2025年第2期985-986,共2页
In the Research Article,“All-Biobased Hydrovoltaic-Photovoltaic Electricity Generators for All-Weather Energy Harvesting”[1],the publisher inadvertently introduced an error in Fig.2F.The power density on the y-axis ... In the Research Article,“All-Biobased Hydrovoltaic-Photovoltaic Electricity Generators for All-Weather Energy Harvesting”[1],the publisher inadvertently introduced an error in Fig.2F.The power density on the y-axis was incorrectly labeled as(mW/cm2)instead of the correct(mW/m2).Figure 2F has now been corrected in the PDF and HTML(full text).The layout of the figure panels has also been updated for better readability. 展开更多
关键词 all weather energy harvesting hydrovoltaic photovoltaic electricity generators power density all biobased figure panels
All-Biobased Hydrovoltaic-Photovoltaic Electricity Generators for All-Weather Energy Harvesting 认领 引用 被引量：10
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作者 Guoping Ren Qichang Hu +3 位作者 Jie Ye Andong Hu Jian Li Shungui Zhou 《Research》 SCIE EI CSCD 2023年第1期51-62,共12页
Hygroelectricity generators(HEGs)utilize the latent heat stored in environmental moisture for electricity generation,but nevertheless are showing relatively low power densities due to their weak energy harvesting capa... Hygroelectricity generators(HEGs)utilize the latent heat stored in environmental moisture for electricity generation,but nevertheless are showing relatively low power densities due to their weak energy harvesting capacities.Inspired by epiphytes that absorb ambient moisture and concurrently capture sunlight for dynamic photosynthesis,we propose herein a scenario of all-biobased hydrovoltaic-photovoltaic electricity generators(HPEGs)that integrate photosystem II(PSII)with Geobacter sulfurreducens(G.s)for simultaneous energy harvesting from both moisture and sunlight.This proof of concept illustrates that the all-biobased HPEG generates steady hygroelectricity induced by moisture absorption and meanwhile creates a photovoltaic electric field which further strengthens electricity generation under sunlight.Under environmental conditions,the synergic hydrovoltaic-photovoltaic effect in HPEGs has resulted in a continuous output power with a high density of 1.24 W/m2,surpassing ali HEGs reported hitherto.This work thus provides a feasible strategy for boosting electricity generation via simultaneous energy harvesting from ambient moisture and sunlight. 展开更多
关键词 ambient proof utilize
High-frequency oscillations detected by electroencephalography as biomarkers to evaluate treatment outcome,mirror pathological severity and predict susceptibility to epilepsy 认领 引用
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作者 Yueqian Sun Guoping Ren +1 位作者 Jiechuan Ren Qun Wang 《Acta Epileptologica》 2021年第1期205-213,共9页
High-frequency oscillations(HFOs)in the electroencephalography(EEG)have been extensively investigated as a potential biomarker of epileptogenic zones.The understanding of the role of HFOs in epilepsy has been advanced... High-frequency oscillations(HFOs)in the electroencephalography(EEG)have been extensively investigated as a potential biomarker of epileptogenic zones.The understanding of the role of HFOs in epilepsy has been advanced considerably over the past decade,and the use of scalp EEG facilitates recordings of HFOs.HFOs were initially applied in large scale in epilepsy surgery and are now being utilized in other applications.In this review,we summarize applications of HFOs in 3 subtopics:(1)HFOs as biomarkers to evaluate epilepsy treatment outcome;(2)HFOs as biomarkers to measure seizure propensity;(3)HFOs as biomarkers to reflect the pathological severity of epilepsy.Nevertheless,knowledge regarding the above clinical applications of HFOs remains limited at present.Further validation through prospective studies is required for its reliable application in the clinical management of individual epileptic patients. 展开更多
关键词 High-frequency oscillations Epilepsy Electroencephalography Treatment outcome Seizure prediction Pathology
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