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蒸汽爆破对杜仲叶水提液活性成分、抗氧化活性及香气组分的影响

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南京林业大学学报（自然科学版） 2024年第3期48卷 245-256页

作者：周昀菲杜庆鑫王志勇王璐王雁刘攀峰孙志强中国林业科学研究院经济林研究所河南郑州450003 南京林业大学林草学院江苏南京210037 经济林种质创新与利用国家林业和草原局重点实验室国家林业和草原局杜仲工程技术研究中心河南郑州450003

【目的】通过分析蒸汽爆破(汽爆)后杜仲成熟叶片活性成分、抗氧化活性和香气组分变化,探究汽爆辅助制备杜仲叶茶的可行性。【方法】对比两个杜仲品种‘华仲8号’和‘华仲12号’成熟叶片的揉捻和不揉捻处理,采用2因素3水平完全试验设计,... 详细信息

【目的】通过分析蒸汽爆破(汽爆)后杜仲成熟叶片活性成分、抗氧化活性和香气组分变化,探究汽爆辅助制备杜仲叶茶的可行性。【方法】对比两个杜仲品种‘华仲8号’和‘华仲12号’成熟叶片的揉捻和不揉捻处理,采用2因素3水平完全试验设计,以叶片总黄酮、多酚和多糖含量确定最佳汽爆参数;采用紫外分光法和高效液相色谱法(HPLC)测定叶片活性成分,测定DPPH(1,1-二苯基-2-三硝基苯肼)和ABTS[2,2-联氮-双-(3-乙基-苯并噻唑-6-磺酸)二铵盐]自由基清除率并分析叶片抗氧化活性与活性成分间的相关性;采用顶空固相微萃取/气相色谱-质谱联用法(HS-SPME/GC-MS)测定三硝基苯香气组分。【结果】依据总黄酮等含量确定最佳汽爆参数为:蒸汽压强0.45 MPa,稳压时间300 s。该条件下‘华仲8号’不揉捻和‘华仲12号’揉捻叶片处理总黄酮和多酚含量较对照分别提高10.87和21.51倍,多酚含量较对照分别提高1.14和0.87倍,环烯醚萜类等6种活性成分含量均极显著提高(P<0.01)。其中‘华仲8号’不揉捻和‘华仲12号’揉捻处理叶片的京尼平苷酸较对照分别提高了0.88和1.23倍,绿原酸较对照分别提高0.45和0.31倍,没食子酸甲酯较对照分别提高10.41和8.06倍。汽爆后杜仲叶抗氧化活性均极显著提高,‘华仲8号’不揉捻强于‘华仲12号’揉捻处理;IC_(50)值与京尼平苷酸、车叶草苷、绿原酸等含量均呈显著负相关(P<0.05)。叶片挥发性化合物中产生了苯甲醇和β-环柠檬醛等芳香物质,具有花香气味的酮类占比最高,相对含量提高了1.93~3.38倍。【结论】蒸汽爆破处理显著提高了杜仲成熟叶水提液的活性成分水溶率和抗氧化活性,其芳香类物质种类增加且含量提高。鉴于目前国内绿叶杜仲资源量远高于红叶杜仲,本研究所提出的杜仲成熟叶片萎凋后直接蒸汽爆破简化了制茶工艺步骤,有效降低了绿叶杜仲茶生产成本,为规模化的杜仲叶加工利用提供了新思路。

关键词：杜仲活性成分抗氧化香气组分蒸汽爆破

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基于三维场景的供热管网设备运行状态监测与故障预测研究

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电力设备管理 2024年第8期 80-82页

作者：张贵勇陈剑刘攀峰国能寿光发电有限责任公司北京电科智擎科技有限公司

供热管网作为城市供热系统的重要组成部分,设备运行状态直接关系到供热质量和安全性。然而,传统的供热管网设备运行状态监测方法往往依赖于人工巡检或定期维护,不仅效率低下,而且难以实现实时监测和故障预警。本文以某公司为例,对供热... 详细信息

供热管网作为城市供热系统的重要组成部分,设备运行状态直接关系到供热质量和安全性。然而,传统的供热管网设备运行状态监测方法往往依赖于人工巡检或定期维护,不仅效率低下,而且难以实现实时监测和故障预警。本文以某公司为例,对供热管网设备运行状态监测与故障预测技术路线与系统进行设计,从设备运行状态监测与故障预警两个方面进行分析研究。

关键词：三维场景供热管网设备运行状态监测故障预测

广西融水374矿床外围地电提取测量法找矿预测

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现代地质 2024年第1期38卷 214-223页

作者：张健文美兰叶武蒋小明谭江东杨航罗海怡刘攀峰蒋羽雄桂林理工大学地球科学学院隐伏矿床预测研究所广西桂林541004 广西壮族自治区三○五核地质大队广西柳州545007

开展矿区外围找矿工作是矿山增储、缓解资源危机的有效手段。为了查明广西融水374铀矿床外围铀矿并圈定成矿预测靶区,本研究利用地电提取测量法进行探索。在含矿剖面开展找矿可行性试验,结果表明在已知矿体正上方能获得清晰的主成矿元... 详细信息

开展矿区外围找矿工作是矿山增储、缓解资源危机的有效手段。为了查明广西融水374铀矿床外围铀矿并圈定成矿预测靶区,本研究利用地电提取测量法进行探索。在含矿剖面开展找矿可行性试验,结果表明在已知矿体正上方能获得清晰的主成矿元素异常,示矿效果显著,说明利用该方法在研究区进行找矿是可行和有效的。通过对13种地电提取元素进行因子分析和聚类分析,获得F1(Pb-Zn-Ce-Eu-La-Nd-Yb)、F2(U-Th-As)、F3(Sb-W)、F4(Mo)4种元素组合因子并确定F2因子为研究区主成矿因子,F1因子为伴生因子。绘制F1和F2因子得分异常图,对元素组合异常的分布进行分析,发现w(U)/w(Th)>1/3的异常区域对寻找铀矿具有重要参考价值。根据单元素因子、F1因子、F2因子以及w(U)/w(Th)值异常特征,结合研究区地质背景,共圈定两处靶区,其中Ⅱ号靶区成矿前景更大,是进一步寻找隐伏铀矿的有利地区。

关键词： 374矿床地电提取异常特征找矿预测广西融水

Using electrogeochemical approach to explore buried gold deposits in an alpine meadow-covered area

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Acta Geochimica 2018年第3期37卷 402-413页

作者： panfeng liu Xianrong Luo Meilan Wen Jiali Zhang Wen Gao Fei Ouyang Xuchuan Duan Earth Sciences of Guilin University of Technology Guilin 541006 China Research Institute of Prediction of Hidden Deposits Guilin University of Technology Guilin 541006 China

Exploration for buried gold ores and other deeply buried ores, especially in high altitude localities, is one of the tough challenges facing the geological world *** and efficient ore prospecting methods are badly needed to deal with the situation. This paper documents a test that, for the first time, uses an electrogeochemical approach to prospect ores in the alpine meadow-covered Bangzhuoma area and its periphery in Qinghai–Tibet *** results were compared with conventional soil measurements from a 2 D prospection, and an ideal model of electrogeochemical anomaly formation in the area was established based on the comparison in order to provide theoretical guidance to buried ore prospecting in areas with similar conditions. The research shows that:(1) For exploration of deeply-buried mineral deposits, an electrogeochemical approach is better than soil measurements in terms of correspondence between element content values and anomaly forms and spatial distribution of known deposits in sections. Anomalies of high to low temperature element associations(Bi–Mo; Au–Ag–As–Bi and Au–Ag)and clear zonation were also observed along vertical vein runs in the sections. Based on integration of the observation with geological characteristics of the sections, we propose to use Au, Ag and As as the electrogeochemical indicators and Bi and Mo as the electrogeochemical tracing elementsto guide further analysis.(2) Judging from element statistics and the scale, intensity, and range of anomalies in plan maps, we found that an electrogeochemical approach is less affected by topography and secondary actions. The plan maps also show that elemental differentiation coefficients of the study area are in an ascending order of Ag(0.67) \ Mo(0.85) \ Bi(0.97) \ Au(1.51) \ As(2.35),better representing the element distribution in the area and yielding more striking and concentrated anomalies for known deposits than that of the soil measurements. Apart from that, electrogeochemical a

关键词： Electrogeochemistry Buried mineral deposit Ideal anomaly model Alpine-meadow covered Ihunze

Game theory based finite-time formation control using artificial potentials for tethered space net robot

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Chinese Journal of Aeronautics 2024年第8期37卷 358-372页

作者： Yifeng MA Yizhai ZHANG panfeng HUANG Ya liu Fan ZHANG The Research Center for Intelligent Robotics School of AstronauticsNorthwestern Polytechnical UniversityXi’an 710072China School of Electronic Information and Electrical Engineering Shanghai Jiao Tong UniversityShanghai 200240China

The Tethered Space Net Robot(TSNR)is an innovative solution for active space debris capture and *** large envelope and simple capture method make it an attractive option for this ***,capturing maneuverable debris with the flexible and elastic underactuated net poses significant *** address this,a novel formation control method for the TSNR is proposed through the integration of differential game theory and robust adaptive control in this ***,the trajectory of the TSNR is obtained through the solution of a real-time feedback pursuit-evasion game with a dynamic target,where the primary condition is to ensure the stability of the ***,to minimize tracking errors and maintain a specific configuration,a robust adaptive formation control scheme with Artificial Potential Field(APF)based on a Finite-Time Convergent Extended State Observer(FTCESO)is *** proposed control method has a key advantage in suppressing complex oscillations by a new adaptive law,thus precisely maintaining the ***,numerical simulations are performed to demonstrate the effectiveness of the proposed scheme.

关键词： Game theory Formation control Artificial potential field Relative distance constraint Tethered space net robot(TSNR)

A geochronological and geochemical study on the granodiorite porphyry and its implication for the mineralization in the Dayaoshan metallogenic belt,Southeastern China

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Acta Geochimica 2021年第1期40卷 106-122页

作者： panfeng liu Jiali Zhang Zhiqiang Wu Qingwei Zhang Meilan Wen Xianrong Luo Chaojie Zheng Wenbin Huang College of Earth Science Guilin University of TechnologyGuilin 541006China College of Environmental Science and Engineering Guilin University of TechnologyGuilin 541006China

A systematic study combining U-Pb zircon dating,lithogeochemical and Sr-Nd isotopic analyses was carried out upon the Xinping granodiorite porphyry in the Dayaoshan metallogenic belt to understand its petrogenesis and tectonic ***-ICP-MS U-Pb zircon dating yielded a 442.7±5.8 Ma age,indicating that the granodiorite porphyry was emplaced during the Llandovery Silurian of the Early *** granodiorite porphyry shares the same geochemical characteristics such as Eu negative anomaly as other syn-tectonic granite plutons in the region,including the granodiorite porphyry in Dawangding and granite porphyries in the Dali Cu-Mo deposit and Longtoushang old deposit,indicating a similar magma evolution *** Xinping granodiorite porphyry has high contents of SiO2(67.871.8%)and K2O(1.78-3.42%)and is metaluminous-peraluminous with A/CNK ratios ranging from 0.97 to 1.06,indicative of high-potassium calc-alkaline to calc-alkaline *** is a I-type granite enriched in large ion lithophile elements Rb,Sr,while depleted in Ba and high field-strength element ***,a collision between the Yunkai Block from the south and the Guangxi Yunnan-North Vietnam Block from the north during the Early Paleozoic was followed by uplifting of the Dayaoshan *** Xinping granodiorite porphyry was likely emplaced during the ***-Nd isotopic analyses show that the granodiorite porphyry has initial 87Sr/86Sr ratios(Isr)of 0.7080-0.7104,εNd(t)range from-0.08 to-4.09,and t2DM between 1.19 and 1.51 Ga,well within the north-east low-value zone of the Cathaysia block,indicating a Paleoproterozoic Cathaysia basement source and an involvement of under plating mantle *** observations,geochronological data,and 3D spatial distribution all lead to the conclusion that the Early Paleozoic Xinping granodiorite porphyry does not have any metallogenic and temporal relationships with the Xinping gold deposit(which has a Jurassic-Early Cretaceous age based on

关键词： U–Pb zircon geochronology Lithogeochemistry Sr–Nd isotopes Granodiorite porphyry The Dayaoshan metallogenic belt

Multi-locomotion transition of tensegrity mobile robot under different terrains

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Science China(Technological Sciences) 2024年第2期67卷 536-557页

作者： YANG Qi liu XinYu WANG panfeng SONG YiMin SUN Tao Key Laboratory of Mechanism Theory and Equipment Design(Tianjin University) Ministry of EducationTianjin UniversityTianjin 300350China

Knowing how to make a multi-locomotion robot achieve locomotion transition under different terrains is a challenging problem,especially for tensegrity robots with multi-locomotion *** this study,a motion planning method for the transition of a multi-locomotion tensegrity robot(hereafter TJUBot)under different terrains is *** robot can achieve four locomotion modes:earthworm-like,inchworm-like,tumbling,and sliding locomotion with only two *** models of the four locomotion modes under five typical terrains,including flat ground,confined space,obstacle,gap,and descending slope,are established using the energy ***,the kinematic characteristics(driving law and initial position)of the robot under these terrains are *** this basis,motion planning for the locomotion transition of TJUBot is conducted,which includes a perception strategy based on three laser sensors and a transition strategy under different *** driving laws of the two motors that can ensure the effective locomotion transition of TJUBot under different terrains are naturally ***,experiments are *** demonstrate that the robot can achieve effective locomotion transition when the motion planning method is used.

关键词： multi-locomotion robot tensegrity kinematic modeling locomotion transition

内蒙古阿拉善右旗拜兴图地区土壤地球化学异常特征及找矿预测

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桂林理工大学学报 2024年第1期44卷 29-42页

作者：李杰伟高文罗先熔李超张文博商振城刘攀峰邱宏蕊刘秀娟桂林理工大学地球科学学院广西桂林541006 桂林理工大学隐伏矿床预测研究所广西桂林541006 华北地质勘查局五一四地质大队河北承德067000

为优选阿拉善右旗拜兴图地区找矿预测靶区,在查明该区成矿地质条件的基础上开展1∶1万土壤地球化学测量。采用元素变异系数、ILR变换、ILR-PCA多元统计分析法对研究区Au、Ag、Co、Cu、Pb、Zn和As等7种元素进行分析,结果表明:(1)成矿元... 详细信息

为优选阿拉善右旗拜兴图地区找矿预测靶区,在查明该区成矿地质条件的基础上开展1∶1万土壤地球化学测量。采用元素变异系数、ILR变换、ILR-PCA多元统计分析法对研究区Au、Ag、Co、Cu、Pb、Zn和As等7种元素进行分析,结果表明:(1)成矿元素主要赋存于断裂与矿化蚀变带交汇部位,Au、Ag呈现强分异富集特征,成矿潜力大;Pb、Zn、As、Co、Cu呈现低分异富集特征,成矿潜力较小。(2)ILR变换可消除原始数据的闭合效应,使元素呈现标准正态分布;ILR-PCA第一主成分能最大限度提取原始数据的综合信息,即PC1正端载荷(Au-Ag-As)为成矿指示元素,元素异常强度和形态受断裂与矿化蚀变带控制,负端载荷(Co-Cu-Pb-Zn)为多期次岩浆热液活动引起。(3)对Ⅰ号找矿靶区进行工程验证,查明靶区数条金(银)矿体,金、银含量均达到或超过最低工业品位,表明拜兴图地区具有较大的金、银找矿潜力。

关键词：土壤地球化学 ILR变换 ILR-PCA 找矿预测拜兴图阿拉善右旗内蒙古

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杜仲新品种‘华仲23号’

南京林业大学学报（自然科学版） 2024年第1期48卷 F0003-F0003页

作者：杜庆鑫刘攀峰王璐杜兰英孙志强杜红岩中国林业科学研究院经济林研究所经济林种质创新与利用国家林业和草原局重点实验室国家林业草原杜仲工程技术研究中心河南郑州450003 南京林业大学江苏南京210037

杜仲(Eucommia ulmoides)是我国十分重要的战略资源树种,除生产杜仲橡胶外,还具有很高的药用价值、营养价值和生态维护功能[1-3]。我国杜仲新品种选育工作起步较晚,但是数量仍然较少[4],无法支撑现代杜仲产业的发展。2007年笔者进行杜... 详细信息

杜仲(Eucommia ulmoides)是我国十分重要的战略资源树种,除生产杜仲橡胶外,还具有很高的药用价值、营养价值和生态维护功能[1-3]。我国杜仲新品种选育工作起步较晚,但是数量仍然较少[4],无法支撑现代杜仲产业的发展。2007年笔者进行杜仲资源调查时,在河南省鹤壁市发现1株叶形奇特的杜仲变异单株。2008—2010年,连续进行嫁接繁殖并对其性状进行观察。2012年,选择生长发育良好、长势一致的嫁接苗建立无性系测定试验林.

关键词：杜仲新品种 ‘华仲23号’

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