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基于煤层挥发分的狐偃山岩体隐伏形态特征研究

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煤矿安全 2024年第3期55卷 216-221页

作者：赵智阳赵金贵杨高峰太原理工大学矿业工程学院山西太原030024 山西焦煤能源集团股份有限公司西山分公司山西太原030024

为了寻找狐偃山岩体隐伏形态特征,基于侵入岩体侧畔煤层挥发分的空间变化特征,刻画侵入岩体在煤系地层中的隐伏形态特征机理;依据西山煤田狐偃山岩体附近469组煤层挥发分数据及前人研究结果,通过制作研究区内02^(#)、2^(#)、6^(#)、8^(#... 详细信息

为了寻找狐偃山岩体隐伏形态特征,基于侵入岩体侧畔煤层挥发分的空间变化特征,刻画侵入岩体在煤系地层中的隐伏形态特征机理;依据西山煤田狐偃山岩体附近469组煤层挥发分数据及前人研究结果,通过制作研究区内02^(#)、2^(#)、6^(#)、8^(#)、9^(#)煤层挥发分等值线图、垂直挥发分变化方向剖面图,研究了煤层挥发分与侵入岩体距离关系。结果表明:狐偃山侵入岩体侧畔依次出现接触变质带、恒温变质带、耗散变质带及正常煤带,岩体影响带宽度在7 km左右,其中接触变质带的宽度在1 km以内,恒温变质带宽度在4~5 km范围内,耗散变质带宽度在2~4 km范围内;狐偃山侵入体在煤系中的隐伏形态为一大型岩体,其中9^(#)煤层下伏有多个小型岩株,煤层自上而下遭受岩体烘烤影响的程度逐渐增大。

关键词：狐偃山侵入岩体煤层挥发分等值线图空间变化特征隐伏形态特征

内嵌运行优化的降温负荷需求响应设备投资方法

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重庆大学学报 2024年第9期47卷 101-111页

作者：杨高峰刘思旭慕杰杨知方王怡国网重庆市电力公司重庆400023 重庆大学电气工程学院重庆400044 重庆大学输变电装备技术全国重点实验室重庆400044

随电力市场改革的进一步推进,分时电价等政策的出台为需求响应技术的应用发展提供了有利的市场环境。以蓄冷空调系统为代表的降温负荷需求响应设备可有效缓解电力供需平衡的难题。降温负荷的需求响应能力及潜在效益与其需求响应设备的... 详细信息

随电力市场改革的进一步推进,分时电价等政策的出台为需求响应技术的应用发展提供了有利的市场环境。以蓄冷空调系统为代表的降温负荷需求响应设备可有效缓解电力供需平衡的难题。降温负荷的需求响应能力及潜在效益与其需求响应设备的投资规划及运行方法紧密相关。现有基于蓄冷技术的需求响应设备投资规划方法多考虑单一的设备类型,基于固定或简化的系统运行策略与设备运行特性进行运行模拟,难以实现不同类型设备组合与用户冷负荷需求特性的最优匹配,导致系统需求响应能力的优化空间受限,无法充分发挥其经济性价值。因此,本文研究考虑运行策略优化的降温负荷需求响应设备统一投资规划建模方法。首先,提出电力市场环境下计及多类制冷与蓄冷设备运行策略优化的需求响应模型,实现降温负荷对价格信号的灵活响应,充分节约用电成本。然后,构建内嵌统一运行策略优化模型的需求响应设备投资规划模型。该模型以用户投资运行总成本最小化为优化目标,统筹考虑电价政策、冷负荷需求特性、相关设备的投资成本与工作特性,通过基于大M法的线性建模方法,最终建立一个混合整数线性规划模型,可采用商业求解器实现高效求解。算例分析表明所提方法可充分适应当前电力市场环境,有效提升用户的投资效益,优化用电负荷曲线,发挥需求响应技术的应用价值。

关键词：需求响应分时电价电力市场混合整数规划降温负荷蓄冷空调

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西山煤田岩溶陷落柱柱壁角特征研究及其意义

煤田地质与勘探 2024年第9期52卷 23-30页

作者：赵金贵王江玮杨高峰郭敏泰太原理工大学矿业工程学院山西太原030024 山西焦煤集团山西太原030024

【意义】随着采掘向深部延伸,岩溶陷落柱已成为华北煤田矿井开采最隐蔽的致灾地质因素之一。柱壁角是描述陷落柱形态特征的重要指标之一。【方法和结果】以西山煤田上下煤层综采均切割过的265个岩溶陷落柱为数据源,通过分区、统计、函... 详细信息

【意义】随着采掘向深部延伸,岩溶陷落柱已成为华北煤田矿井开采最隐蔽的致灾地质因素之一。柱壁角是描述陷落柱形态特征的重要指标之一。【方法和结果】以西山煤田上下煤层综采均切割过的265个岩溶陷落柱为数据源,通过分区、统计、函数构建、地质类比,挖掘西山煤田岩溶陷落柱柱壁角中蕴藏的地质信息,获得如下认识:(1)西山煤田陷落柱平均柱壁角为84.29°,超50%的陷落柱柱壁角在85°~90°,平均柱壁角自西北到东南逐渐增大,从82.05°增大到87.57°。(2)西山煤田陷落柱柱壁角与8号煤层揭露的陷落柱面积成反比,依据柱壁角与陷落柱面积大小关系,陷落柱划分为:充分塌陷陷落柱(90°~85°)、次充分塌陷陷落柱(1 700 m^(2),等效半径为23.3 m;对应的8号煤层陷落柱面积分别为2 750 m^(2),半径分别为30 m。充分塌陷陷落柱一般发育有柱顶空腔,柱体结构较为松散,可导通顶板裂隙水与柱顶空腔水,以及底板承压奥灰水,是西山煤田导水陷落柱的一种重要类型。【结论】类比地质历史时期降雨量结果显示,具有“北柱南相”的西山煤田岩溶陷落柱,可能形成于气候湿热的古近纪渐新世时期,强烈的岩溶作用吸收了大气中的CO_(2),并锁定在沉积区,可能是导致全球大气CO_(2)含量急剧降低的重要原因。

关键词：西山煤田岩溶陷落柱柱壁角充分塌陷陷落柱形成时间

高比例新能源电力系统可靠性高效评估和薄弱环节辨识方法

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电工电能新技术 2024年第4期43卷 43-52页

作者：杨高峰胡文方钦汤林邵常政何豪杰国网重庆市电力公司重庆400000 输变电装备技术全国重点实验室(重庆大学) 重庆400044

新能源渗透率的提高可能诱发供电中断的风险,使电力系统的运行可靠性降低,传统的中长期可靠性评估方法难以满足运行可靠性评估的时间需求。本文提出了一种电力系统运行可靠性高效评估算法,揭示了电力系统运行可靠性指标与风电出力不确... 详细信息

新能源渗透率的提高可能诱发供电中断的风险,使电力系统的运行可靠性降低,传统的中长期可靠性评估方法难以满足运行可靠性评估的时间需求。本文提出了一种电力系统运行可靠性高效评估算法,揭示了电力系统运行可靠性指标与风电出力不确定性因素的解析函数关系,避免不确定性因素变化时可靠性的重复计算。首先,基于隐马尔可夫模型对风电出力的分布特性进行建模;然后,通过状态枚举-混沌多项式展开方法建立可靠性指标与风电出力间的解析函数;最后,基于解析函数实现对实时风电出力下的新能源电力系统运行可靠性的高效评估及薄弱环节辨识。以修改的IEEE-RTS79系统为例进行分析计算,验证了所提方法的有效性。

关键词：新能源电力系统隐马尔可夫模型混沌多项式展开可靠性评估状态枚举薄弱环节辨识

Development of multidimensional sequence operation theory with applications to risk evaluation in power system generation scheduling

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Science China(Technological Sciences) 2008年第6期51卷 724-734页

作者： ChongQing Kang&Email:cqkang@*** gaofeng yang Qing Xia State Key Lab of Power Systems Department of Electrical Engineering Tsinghua University Beijing 100084 China yangjiaping Power Supply Bureau Chongqing Electric Power Corporation Chongqing 400050 China

Sequence operation theory (SOT) is a powerful tool for solving complex probabilistic problems in power system. However, the basic single dimension SOT cannot satisfy the requirement of multi-state; multi-attribute analysis, which is often the case in actual power system practice. To address this problem, multidimensional sequence operation theory (MSOT) is developed. On the basis of previous research, this paper first categorizes the situations by the number of state variables; the number of attribute values,; defines the multidimensional sequence for single state variable; multiple attribute values, as well as the multidimensional sequence for multiple state variables; multiple attribute values. Corresponding to those definitions, four types of operations between two discrete multidimensional sequences are derived respectively. Therefore, the sequence is extended from single dimensional to multidimensional, establishing an integrated theory of multidimensional sequence operation. In particular, the basic single dimension SOT can be viewed as a special case of MSOT with only one state variable; one attribute value. Finally, the paper demonstrates the effectiveness of MSOT through an example of risk evaluation in power system generation scheduling.

关键词： power system multidimensional sequence operation theory vector Hadamard products uncertainty

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一种高效计算LS-VCE的方法

测绘与空间地理信息 2024年第2期47卷 14-16,20页

作者：赵俊杨高锋张亚军智慧地球重点实验室陕西西安710054 西安测绘总站陕西西安710054 大地测量与地球动力学国家重点实验室湖北武汉430077

在最小二乘方差分量估计(Least-squares variance component estimation, LS-VCE)计算公式的基础上,利用Helmert方差分量估计计算迭代终止条件——各个方差分量估值相等,导出了一种高效计算LS-VCE的公式,并设计了相应的迭代算法。GNSS... 详细信息

在最小二乘方差分量估计(Least-squares variance component estimation, LS-VCE)计算公式的基础上,利用Helmert方差分量估计计算迭代终止条件——各个方差分量估值相等,导出了一种高效计算LS-VCE的公式,并设计了相应的迭代算法。GNSS向量网算例分析结果表明,本文设计的快速方法在计算效率上比原方法提高50%左右,在大规模计算方面具有显著应用价值。

关键词：方差分量估计 LS-VCE Helmert GNSS向量网

Mucosal immune responses to Ichthyophthirius multifiliis in the ocular mucosa of rainbow trout(Oncorhynchus mykiss,Walbaum),an ancient teleost fish

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Marine Life Science & Technology 2024年第2期6卷 266-279页

作者： Weiguang Kong Guangyi Ding gaofeng Cheng Peng yang Zhen Xu Key Laboratory of Breeding Biotechnology and Sustainable Aquaculture Institute of HydrobiologyChinese Academy of SciencesWuhan 430072China Department of Aquatic Animal Medicine College of FisheriesHuazhong Agricultural UniversityWuhan 430070China

The eye,as a specialized visual organ,is directly exposed to the external environment,and,therefore,it faces constant chal-lenges from external pathogenic organisms and *** the ocular mucosa(OM)of mammals,mucosal-associated lymphoid tissues(MALTs)constitute the primary line of ***,the immune defense role of the OM remains unknown in aquatic *** gain insights into the immune processes within the OM of teleost fish,we developed an infection model of rainbow trout(Oncorhynchus mykiss)OM using a parasite,Ichthyophthirius multifiliis(Ich).Immunofluorescence,qPCR,and H&E staining revealed that Ich successfully infiltrates the OM of rainbow trout,leading to pathological struc-tural changes,as evidenced by A&B ***,the qPCR results indicate an up-regulation of immune-related genes following Ich infection in the ***,transcriptome analyses were conducted to detect immune responses and impairments in eye function within the OM of rainbow trout with Ich *** results of the transcriptome analysis that Ich infection can cause an extensive immune response in the OM,ultimately affecting ocular *** the best of our knowledge,our findings represent for the first time that the teleost OM could act as an invasion site for parasites and trigger a strong mucosal immune response to parasitic infection.

关键词： Ocular mucosa Mucosal immunity Transcriptome analysis Oncorhynchus mykiss Ichthyophthirius multifiliis

An autonomous Unmanned Aerial Vehicle exploration platform with a hierarchical control method for post‐disaster infrastructures

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IET Cyber-Systems and Robotics 2024年第1期6卷 24-37页

作者： Xin Peng gaofeng Su Raja Sengupta Department of Civil and Environmental Engineering University of CaliforniaBerkeleyBerkeleyCaliforniaUSA

Catastrophic natural disasters like earthquakes can cause infrastructure ***-gency response agencies need to assess damage precisely while repeating this process for infrastructures with different shapes and *** authors aim for an autonomous Unmanned Aerial Vehicle(UAV)platform equipped with a 3D LiDAR sensor to comprehensively and accurately scan the infrastructure and map it with a predefined resolution *** the inspection,the UAV needs to decide on the Next Best View(NBV)position to maximize the gathered information while avoiding collision at high *** authors propose solving this problem by implementing a hierarchical closed‐loop control system consisting of a global planner and a local *** global NBV planner decides the general UAV direction based on a history of measurements from the LiDAR sensor,and the local planner considers the UAV dynamics and enables the UAV to fly at high speed with the latest LiDAR *** proposed system is vali-dated through the Regional Scale Autonomous Swarm Damage Assessment simulator,which is built by the *** extensive testing in three unique and highly constrained infrastructure environments,the autonomous UAV inspection system suc-cessfully explored and mapped the infrastructures,demonstrating its versatility and applicability across various shapes of infrastructure.

关键词： autonomy hierarchical control structural health inspection Unmanned Aerial Vehicle

Long way up:rethink diseases in light of phase separation and phase transition

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Protein & Cell 2024年第7期15卷 475-492页

作者： Mingrui Ding Weifan Xu gaofeng Pei Pilong Li State Key Laboratory of Membrane Biology&Frontier Research Center for Biological Structure School of Life SciencesTsinghua UniversityBeijing 100084China Tsinghua-Peking Center for Life Sciences Beijing 100084China NuPhase Therapeutics Beijing 100083China

Biomolecular condensation, driven by multivalency, serves as a fundamental mechanism within cells, facilitating the formation of distinct compartments, including membraneless organelles that play essential roles in various cellular processes. Perturbations in the delicate equilibrium of condensation, whether resulting in gain or loss of phase separation, have robustly been associated with cellular dysfunction and physiological disorders. As ongoing research endeavors wholeheartedly embrace this newly acknowledged principle, a transformative shift is occurring in our comprehension of disease. Consequently, significant strides have been made in unraveling the profound relevance and potential causal connections between abnormal phase separation and various diseases. This comprehensive review presents compelling recent evidence that highlight the intricate associations between aberrant phase separation and neurodegenerative diseases, cancers, and infectious diseases. Additionally, we provide a succinct summary of current efforts and propose innovative solutions for the development of potential therapeutics to combat the pathological consequences attributed to aberrant phase separation.

关键词： multivalency compartments aberant phase separation therapeutics gain or loss of phase separation diseases