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Enhancing XRF sensor-based sorting of porphyritic copper ore using particle swarm optimization-support vector machine(PSO-SVM)algorithm

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International Journal of Mining Science and Technology 2024年第4期34卷 545-556页

作者： Zhengyu Liu Jue Kou Zengxin Yan peilong wang Chang Liu Chunbao Sun Anlin Shao Bern Klein School of Civil and Resources Engineering University of Science and TechnologyBeijing 100083China Institute of Minerals Research University of Science and TechnologyBeijing 100083China State Key Laboratory of Mineral Processing Beijing 102628China Ansteel Group Mining Co.Ltd. Anshan 114000China Norman B.Keevil Institute of Mining Engineering University of British ColumbiaVancouverBC V6T 1Z4Canada

X-ray fluorescence(XRF)sensor-based ore sorting enables efficient beneficiation of heterogeneous ores,while intraparticle heterogeneity can cause significant grade detection errors,leading to misclassifications and hindering widespread technology *** classification models are crucial to determine if actual grade exceeds the sorting threshold using localized XRF *** studies mainly used linear regression(LR)algorithms including simple linear regression(SLR),multivariable linear regression(MLR),and multivariable linear regression with interaction(MLRI)but often fell short attaining satisfactory *** study employed the particle swarm optimization support vector machine(PSO-SVM)algorithm for sorting porphyritic copper ore ***-scale results showed PSO-SVM out-performed LR and raw data(RD)models and the significant interaction effects among input features was *** poor input data quality,PSO-SVM demonstrated exceptional ***-scale sorting achieved 93.0%accuracy,0.24%grade increase,84.94%recovery rate,57.02%discard rate,and a remarkable 39.62 yuan/t net smelter return(NSR)increase compared to no *** improvements were achieved by the PSO-SVM model with optimized input combinations and highest data quality(T=10,T is XRF testing times).The unsuitability of LR methods for XRF sensor-based sorting of investigated sample is *** element selection and mineral association analysis elucidate element importance and influence mechanisms.

关键词： XRF sensor-based sorting PSO-SVM algorithm Copper ore pebble Receiver operating curve(ROC) Net smelter return(NSR)

Controlling the dynamic behavior of decentralized cluster through centralized approaches

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Chinese Physics B 2024年第6期33卷 46-54页

作者：袁大明王培龙王鹏马星宇汪楚云王璟陈怀城王高叶方富 School of Ophthalmology and Optometry Eye HospitalSchool of Biomedical EngineeringWenzhou Medical UniversityWenzhou 325035China Postgraduate Training Base Alliance Wenzhou Medical UniversityWenzhou 325035China Wenzhou Institute University of Chinese Academy of SciencesWenzhou 325011China School of Physical Sciences University of Chinese Academy of SciencesBeijing 100049China

How to control the dynamic behavior of large-scale artificial active matter is a critical concern in experimental research on soft matter, particularly regarding the emergence of collective behaviors and the formation of group patterns. Centralized systems excel in precise control over individual behavior within a group, ensuring high accuracy and controllability in task execution. Nevertheless, their sensitivity to group size may limit their adaptability to diverse tasks. In contrast, decentralized systems empower individuals with autonomous decision-making, enhancing adaptability and system robustness. Yet, this flexibility comes at the cost of reduced accuracy and efficiency in task execution. In this work, we present a unique method for regulating the centralized dynamic behavior of self-organizing clusters based on environmental interactions. Within this environment-coupled robot system, each robot possesses similar dynamic characteristics, and their internal programs are entirely identical. However, their behaviors can be guided by the centralized control of the environment, facilitating the accomplishment of diverse cluster tasks. This approach aims to balance the accuracy and flexibility of centralized control with the robustness and task adaptability of decentralized control. The proactive regulation of dynamic behavioral characteristics in active matter groups, demonstrated in this work through environmental interactions, holds the potential to introduce a novel technological approach and provide experimental references for studying the dynamic behavior control of large-scale artificial active matter systems.

关键词： self-organizing system centralized control dynamics regulation

密闭管道内瓦斯爆炸卷扬沉积煤尘爆炸传播特性

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煤炭学报 2024年第4期49卷 1941-1951页

作者：江丙友洪汉苏明清鲁昆仑杨炳辉王培龙丁大伟安徽理工大学工业粉尘防控与职业安全健康教育部重点实验室安徽淮南232001 中国安全生产科学研究院北京100012 安徽理工大学安全科学与工程学院安徽淮南232001

为了探究密闭管道内瓦斯爆炸卷扬沉积煤尘爆炸的传播特性,在自主研制的瓦斯爆炸卷扬沉积煤尘爆炸试验系统内,从爆炸压力、火焰以及压力-火焰的耦合关系等方面,研究了不同瓦斯体积分数及煤尘质量浓度下瓦斯爆炸卷扬沉积煤尘爆炸的爆炸压... 详细信息

为了探究密闭管道内瓦斯爆炸卷扬沉积煤尘爆炸的传播特性,在自主研制的瓦斯爆炸卷扬沉积煤尘爆炸试验系统内,从爆炸压力、火焰以及压力-火焰的耦合关系等方面,研究了不同瓦斯体积分数及煤尘质量浓度下瓦斯爆炸卷扬沉积煤尘爆炸的爆炸压力传播特性及火焰传播特性,并利用Fluent数值模拟软件分析了煤尘的卷扬分散特征。结果表明:密闭管道内瓦斯体积分数为10%时的最大爆炸压力整体高于瓦斯体积分数为12%和8%时的最大爆炸压力。当瓦斯体积分数为10%,煤尘质量浓度为250 g/m^(3)时,最大爆炸压力传播规律表现为在瓦斯段先升后降再升,到达煤尘段后持续上升;随着煤尘质量浓度的增加,在瓦斯段则表现为先升后降,在煤尘段依旧持续上升。当瓦斯体积分数为8%和12%时,最大爆炸压力随煤尘质量浓度增加呈上升趋势,而瓦斯体积分数为10%时则呈现下降趋势。密闭管道内火焰锋面到达时间与传播距离呈正相关,瓦斯体积分数为10%时火焰锋面到达各测点的时间短于瓦斯体积分数为12%和8%的传播时间。火焰传播速度随传播距离呈先增大后减小的趋势,当瓦斯体积分数为10%时,火焰传播速度最快。密闭管道内瓦斯爆炸卷扬沉积煤尘爆炸的爆炸压力-时间曲线会出现2次峰值。第1次峰值是由瓦斯爆炸的前驱冲击波产生,当火焰传播至煤尘段后,压力同时开始上升,且压力峰值时刻和火焰峰值时刻耦合,达到第2次压力峰值,随着火焰信号的消失,压力逐渐减小直至反应停止。密闭管道内前驱冲击波与反射波使得煤尘卷扬分散,形成“漩涡状”煤尘云,促进煤粉与爆燃波接触。当煤尘质量浓度一定时,体积分数为10%瓦斯的卷扬程度优于体积分数12%和8%瓦斯;当瓦斯体积分数一定时,煤尘卷扬程度随煤尘质量浓度的增加而递减。

关键词：密闭管道瓦斯爆炸煤尘爆炸煤尘卷扬火焰传播特性压力-火焰耦合

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基于生成逆推的大气湍流退化图像复原方法

计算机应用研究 2024年第1期41卷 282-287页

作者：崔浩然苗壮王家宝余沛毅王培龙陆军工程大学指挥与控制工程学院南京210007

大气湍流是影响远距离成像质量的重要因素。虽然已有的深度学习模型能够较好地抑制大气湍流引起的图像像素几何位移与空间模糊,但是这些模型需要大量的参数和计算量。为了解决该问题,提出了一种轻量化的基于生成逆推的大气湍流退化图像... 详细信息

大气湍流是影响远距离成像质量的重要因素。虽然已有的深度学习模型能够较好地抑制大气湍流引起的图像像素几何位移与空间模糊,但是这些模型需要大量的参数和计算量。为了解决该问题,提出了一种轻量化的基于生成逆推的大气湍流退化图像复原模型,该模型包含了去模糊、去偏移和湍流再生成三个核心模块。其中,去模糊模块通过高维特征映射块、细节特征抽取块和特征补充块,抑制湍流引起的图像模糊;去偏移模块通过两层卷积,补偿湍流引起的像素位移;湍流再生成模块通过卷积等操作再次生成湍流退化图像。在去模糊模块中,设计了基于注意力的特征补充模块,该模块融合了通道注意力机制与空间混合注意力机制,能在训练过程中关注图像中的重要细节信息。在公开的Heat Chamber与自建的Helen两个数据集上,所提模型分别取得了19.94 dB、23.51 dB的峰值信噪比和0.688 2、0.752 1的结构相似性。在达到当前最佳SOTA方法性能的同时,参数量与计算量有所减少。实验结果表明,该方法对大气湍流退化图像复原有良好的效果。

关键词：大气湍流退化图像复原深度学习注意力机制

Overexpression of the ThTPS gene enhanced salt and osmotic stress tolerance in Tamarix hispida

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Journal of Forestry Research 2022年第1期33卷 299-308页

作者： peilong wang Xiaojin Lei Jiaxin Lü Caiqiu Gao State Key Laboratory of Tree Genetics and Breeding(Northeast Forestry University) Harbin 150040People’s Republic of China

Trehalose is a non-reducing disaccharide with high stability and strong water absorption properties that can improve the resistance of organisms to various abiotic ***-6-phosphate synthase(TPS)plays important roles in trehalose metabolism and *** this study,the full-length cDNA of ThTPS was cloned from Tamarix hispida Willd.A phylogenetic tree including ThTPS and 11 AtTPS genes from Arabidopsis indicated that the ThTPS protein had a close evolutionary relationship with ***,the function of At TPS7 has not been *** analyze the abiotic stress tolerance function of ThTPS,the expression of ThTPS in *** under salt and drought stress and JA,ABA and GA3 hormone stimulation was monitored by *** results show that ThTPS expression was clearly induced by all five of these treatments at one or more times,and salt stress caused particularly strong induction of Th TPS in the roots of *** ThTPS gene was transiently overexpressed in *** physiological indexes and staining results showed that ThTPS gene overexpression increased salt and osmotic stress tolerance in ***,the Th TPS gene can respond to abiotic stresses such as salt and drought,and its overexpression can significantly improve salt and osmotic *** findings establish a foundation to better understand the responses of TPS genes to abiotic stress in plants.

关键词： Trehalose-6-phosphate synthase(TPS) Tamarix hispida Salt tolerance Osmotic resistance

Miniaturized electrochemical sensors and their point-of-care applications

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Chinese Chemical Letters 2020年第3期31卷 589-600页

作者： Wei Zhang Ruiguo wang Fang Luo peilong wang Zhenyu Lin Institute of Quality Standards and Testing Technology for Agro-products Chinese Academy of Agricultural SciencesBeijing 100081China MOE Key Laboratory for Analytical Science of Food Safety and Biology Fujian Provincial Key Laboratory of Analysis and Detection for Food SafetyCollege of ChemistryFuzhou UniversityFuzhou 350116China

Most of the current analytical methods depend largely on laboratory-based analytical techniques that require expensive and bullky equipment,potentially incur costly testing,and involve lengthy detection *** increasing requirements for point-of-care testing(POCT),more attention has been paid to miniaturized analytical *** electrochemical(MEC)sensors,including different material-based MEC sensors(such as DNA-,paper-,and screen electrode-based),have been in strong demand in analytical science due to their easy operation,portability,high sensitivity,as well as their short analysis *** have been applied for the detection of trace amounts of target through measuring changes in electrochemical signal,such as current,voltage,potential,or impedance,due to the oxidation/reduction of chemical/biological molecules with the help of electrodes and electrochemical *** sensors present great potential for the detection of targets including small organic molecules,metal ions,and *** recent years,MEC sensors have been broadly applied to POCT in various fields,including health care,food safety,and environmental monitoring,owing to the excellent advantages of electrochemical(EC)*** review summarized the state-of-the-art advancements on various types of MEC sensors and their applications in ***,the future perspectives,opportunities,and challenges in this field are also discussed.

关键词： Miniaturized electrochemical sensors Point-of-care testing DNA-based miniaturized electrochemical sensor Paper-based electrochemical sensor Microfluidics-based electrochemical sensor Miniaturized capillary electrophoresis-based sensor

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胃黏膜菌群在胃癌发生过程中的动态变化研究

长治医学院学报 2024年第4期38卷 249-254页

作者：宋聃王培龙赵婉彬长治医学院山西长治046000 长治医学院附属和济医院内镜室

目的:探讨胃黏膜菌群在胃癌(GC)发生过程中的动态变化。方法:收集浅表性胃炎(SG)患者8例、萎缩性胃炎(AG)患者9例、肠化生及异型增生(IM/DYS)患者12例和GC患者14例,采用16S rDNA基因高通量测序技术检测GC患者和胃癌前病变患者胃黏膜菌群... 详细信息

目的:探讨胃黏膜菌群在胃癌(GC)发生过程中的动态变化。方法:收集浅表性胃炎(SG)患者8例、萎缩性胃炎(AG)患者9例、肠化生及异型增生(IM/DYS)患者12例和GC患者14例,采用16S rDNA基因高通量测序技术检测GC患者和胃癌前病变患者胃黏膜菌群,通过未观测状态重建的群落系统发育研究(PICRUSt)预测菌群的功能差异。结果:在门水平上,4组样本的胃黏膜菌群丰度排名前5的类别组成相同,但占比有所差异,由SG进展到GC的过程中,变形菌门、放线菌门丰度呈减少趋势,厚壁菌门、拟杆菌门丰度呈增加趋势;在属水平上,从SG发展到GC,普氏菌属及乳杆菌属丰度比例不断增高,螺杆菌属丰度比例在GC组中最低,同时发现GC组中乳杆菌属、戴阿利斯特杆菌属、巨球型菌属、微单胞菌属、凝聚杆菌属明显富集;线性判别(LEfSe)分析结果显示,SG组的优势菌属为细菌,IM/DYS组的优势菌属为微红微球属、红杆菌科、弓形菌属,GC组优势菌属为红蝽菌科;KEGG未富集到差异显著的代谢通路。结论:GC患者胃黏膜菌群群落及多样性与癌前病变组存在明显差异;GC发生过程中菌群的生态失调。

关键词：胃癌前病变胃癌胃黏膜菌群

Study on the temperature dependence of BGO light yield

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Science China(Physics,Mechanics & Astronomy) 2014年第10期57卷 1898-1901页

作者： wang peilong ZHANG YunLong XU ZiZong wang XiaoLian State Key Laboratory of Particle Detection and Electronics University of Science and Technology of China

The temperature dependence of BGO coupled with photomultiplier tube R5610A-01 was studied in the range of-30–30℃. The temperature coefficient of the BGO and R5610 A as a whole was tested to be-1.82%/℃. And the temperature coefficient of the gain of the R5610 A is-0.44%/℃ which was tested in the same situation using a blue LED. Thus the temperature coefficient of BGO's light yield can be evaluated as-1.38%/℃.

关键词： BGO light yield temperature dependence PMT

The role ofβ,γ,δ-substituent of dialkylphosphinic acids in HREE extraction and separation behaviors

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Journal of Rare Earths 2023年第11期41卷 1789-1795,I0005页

作者： Junlian wang Wen Xu Jianguo Cui Guodong Xu Yufu Chen peilong wang Ziyong Chang School of Civil and Resource Engineering University of Science and Technology BeijingBeijing100083China State Key Laboratory of Baiyunobo Rare Earth Resource Researches and Comprehensive Utilization Baotou Research Institute of Rare EarthsBaotou014030China Key Laboratory of Ministry of Education for Efficient Mining and Safety of Metal Mines Beijing100083China

Heavy rare earth element(HREE)separation has always been a great *** kind of dialkylphosphinic acids is recognized as the third generation of organophosphorous acid ***,detailed relationship betweenβ-substituent(especially when it changes from H to methyl,and further to ethyl)and their extraction behaviors and selectivity for HREEs have rarely been ***,there are also few reports on effect ofγ,δ-substituent on HREE extraction and *** this paper,we synthesized five and collected two dialkylphosphinic acids with differentβ,γ,δ-substituents(from H to ethyl).These extractants were divided into two groups to discuss their extraction behaviors and selectivity for HREEs:β-substituent group(P208,INET-1,P218,USTB-1 and P227)andγ,δ-substituent group(P218,P2132 and Cyanex 272).To evaluate and compare their extractabilities,P507 was used as a reference and Tm,Yb,Lu were extracted with 0.01 mol/L of these extractants from single Tm,Yb and Lu solutions(~4×10^(-4)mol/L)at different initial ***,pH_(0.5)(Tm),pH_(0.5)^(Yb)and pH_(0.5)^(Lu)values and their differences(ΔpH_(0.5)^(Tm-Yb),ΔpH_(0.5)^(Yb-Lu),ΔpH_(0.5)^(Tm-Lu))for each extractant were given to roughly evaluate their separation performance for Tm,Yb and *** further investigate the selectivity of these extractants for HREEs,Tb,Dy,Ho,Er,Tm,Yb and Lu were extracted from their mixed solution with initial pH of 4.00 at phase ratio A/O of 2:1,1:1 or 1:*** HREE separation performance is mainly discussed based on the adjacent HREE separation factors(β_(N+1/N))and their average value(β_(Tb-Lu)).

关键词： Heavy rare earth element Extraction Separation Dialkylphosphinic acid Substituent effect