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Improving the Accuracy of Vegetation Index Retrieval for Biomass by Combining Ground-UAV Hyperspectral Data-A New Method for Inner Mongolia Typical Grasslands

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Phyton-International Journal of Experimental Botany 2024年第2期93卷 387-411页

作者： Ruochen Wang Jianjun dong Lishan Jin Yuyan Sun Taogetao Baoyin xiumei Wang The College of Resources and Environmental Engineering Inner Mongolia University of TechnologyHohhot010000China The College of Ecology and Environment Inner Mongolia UniversityHohhot010000China Key Laboratory of Environmental Pollution Control and Remediation at Universities of Inner Mongolia Autonomous Region Inner Mongolia University of TechnologyHohhot010000China

Grassland biomass is an important parameter of grassland ecosystems.The complexity of the grassland canopy vegetation spectrum makes the long-term assessment of grassland growth a challenge.Few studies have explored the original spectral information of typical grasslands in Inner Mongolia and examined the influence of spectral information on aboveground biomass(AGB)estimation.In order to improve the accuracy of vegetation index inversion of grassland AGB,this study combined ground and Unmanned Aerial Vehicle(UAV)remote sensing technology and screened sensitive bands through ground hyperspectral data transformation and correlation analysis.The narrow band vegetation indices were calculated,and ground and airborne hyperspectral inversion models were established.Finally,the accuracy of the model was verified.The results showed that:(1)The vegetation indices constructed based on the ASD FieldSpec 4 and the UAV were significantly correlated with the dry and fresh weight of AGB.(2)The comparison between measured R^(2) with the prediction R^(2) indicated that the accuracy of the model was the best when using the Soil-Adjusted Vegetation Index(SAVI)as the independent variable in the analysis of AGB(fresh weight/dry weight)and four narrow-band vegetation indices.The SAVI vegetation index showed better applicability for biomass monitoring in typical grassland areas of Inner Mongolia.(3)The obtained ground and airborne hyperspectral data with the optimal vegetation index suggested that the dry weight of AGB has the best fitting effect with airborne hyperspectral data,where y=17.962e^(4.672x),the fitting R^(2) was 0.542,the prediction R^(2)was 0.424,and RMSE and REE were 57.03 and 0.65,respectively.Therefore,established vegetation indices by screening sensitive bands through hyperspectral feature analysis can significantly improve the inversion accuracy of typical grassland biomass in Inner Mongolia.Compared with ground monitoring,airborne hyperspectral monitoring better reflects the inversion of actual surface biomass.It pr

关键词： Aboveground biomass inversion model vegetation index unmanned aerial vehicle typical grassland

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Research Progress of Acupuncture Treatment of Neurogenic Bladder after Spinal Cord Injury

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Journal of Clinical and Nursing Research 2024年第4期8卷 297-302页

作者： Chunxuan dong Qibin Sun Guodong Chen xiumei Xu Xiaoju Zhang Decheng Gan Gansu Provincial Hospital of Traditional Chinese Medicine Lanzhou 73000Gansu ProvinceChina

Neurogenic bladder (NB) mainly occurs in patients with spinal cord injury (SCI). The pathological basis of NB is the occurrence of lesions in the urination control center, which requires systematic treatment. Western medicine has many treatment methods for this disease, which can alleviate the symptoms of the disease. However, the radical effect is not ideal and there are many adverse reactions. In comparison, acupuncture can improve the residual urine volume of NB patients and regulate the related indexes of urodynamics. There are many kinds of acupuncture therapies, such as simple acupuncture and moxibustion, which can comprehensively improve the therapeutic effect and obtain a better disease prognosis. Therefore, this article elaborates on the pathogenesis of SCI complicated with NB, the treatment mechanism, and treatment methods of acupuncture and moxibustion to provide a reference for clinical treatment.

关键词： Acupuncture Spinal cord injury Neurogenic bladder

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An update on the function and regulation of methylerythritol phosphate and mevalonate pathways and their evolutionary dynamics

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Journal of Integrative Plant Biology 2021年第7期63卷 1211-1226页

作者： Xiaojun Pu xiumei dong Qing Li Zexi Chen Li Liu State Key Laboratory of Biocatalysis and Enzyme Engineering Hubei Collaborative Innovation Center for Green Transformation of BioResourcesHubei Key Laboratory of Industrial BiotechnologySchool of Life SciencesHubei UniversityWuhan 434200China Key Laboratory for Economic Plants and Biotechnology Kunming Institute of Botanythe Chinese Academy of Sciencesand Yunnan Key Laboratory for Wild Plant ResourcesKunming 650201China School of Life Sciences Yunnan UniversityKunming 650091China University of the Chinese Academy of Sciences Beijing 100049China

Isoprenoids are among the largest and most chemically diverse classes of organic compounds in nature and are involved in the processes of photosynthesis, respiration, growth, development,and plant responses to stress. The basic building block units for isoprenoid synthesis-isopentenyl diphosphate and its isomer dimethylallyl diphosphate-are generated by the mevalonate (MVA) and methylerythritol phosphate(MEP) pathways. Here, we summarize recent advances on the roles of the MEP and MVA pathways in plant growth, development and stress responses, and attempt to define the underlying gene networks that orchestrate the MEP and MVA pathways in response to developmental or environmental cues.Through phylogenomic analysis, we also provide a new perspective on the evolution of the plant isoprenoid pathway. We conclude that the presence of the MVA pathway in plants may be associated with the transition from aquatic to subaerial and terrestrial environments, as lineages for its core components are absent in green algae. The emergence of the MVA pathway has acted as a key evolutionary event in plants that facilitated land colonization and subsequent embryo development, as well as adaptation to new and varied environments.

关键词： evolutionary innovation MEP pathway MVA pathway retrograde signaling stress

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根瘤菌PP3对水黄皮抗氧化系统应激镍胁迫的影响

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微生物学通报 2024年第5期51卷 1626-1640页

作者：金芮民郝思迪董官勇严靖程曦冉陈强余秀梅四川农业大学资源学院四川成都611130 自然资源部成都平原国土生态与土地利用野外科学观测研究站四川成都611130 苍溪县猕猴桃产业发展局四川广元628499

【背景】抗氧化系统在植物抵抗逆境胁迫中起着重要作用,而共生根瘤菌是否会影响豆科植物抗氧化防御系统来提高植株抗逆性尚不清楚。【目的】以耐逆性强的水黄皮(Pongamia pinnata)作为豆科植物代表,开展镍胁迫下的水黄皮快生根瘤菌(Rhiz... 详细信息

【背景】抗氧化系统在植物抵抗逆境胁迫中起着重要作用,而共生根瘤菌是否会影响豆科植物抗氧化防御系统来提高植株抗逆性尚不清楚。【目的】以耐逆性强的水黄皮(Pongamia pinnata)作为豆科植物代表,开展镍胁迫下的水黄皮快生根瘤菌(Rhizobium sp.)PP3回接水黄皮的盆栽实验,探究根瘤菌共生固氮对豆科植物抗氧化系统应激镍胁迫的影响。【方法】利用酶联免疫法测定不同处理下水黄皮根、茎、叶中的4种抗氧化酶活性和4种非酶抗氧化剂含量。【结果】水黄皮植株中的抗氧化酶活性强弱为超氧化物歧化酶(superoxide dismutase,SOD)>过氧化物酶(peroxidase,POD)>过氧化氢酶(catalase,CAT)>谷胱甘肽还原酶(glutathione reductase,GR),非酶抗氧化剂含量高低为谷胱甘肽(glutathione,GSH)>类黄酮(flavonoids,FLA)>原花青素(oligomeric proantho cyanidins,OPC)>抗坏血酸(ascorbic acid,AsA);在不施用氮素和40 mg/L Ni2+胁迫处理下,接种根瘤菌PP3使水黄皮茎中的POD活性增加61.8%,叶中的SOD、GR和CAT活性增加5.7%、23.6%和36.1%;在施用氮素和40 mg/L Ni2+胁迫下,接种根瘤菌PP3使水黄皮植株根中GSH、FLA和OPC含量升高55.9%、61.6%和38.6%,水黄皮植株叶中GSH含量升高14.8%。【结论】本研究初步揭示了根瘤菌会对水黄皮组织中的抗氧化酶和非酶抗氧化剂产生显著影响,但对不同组织中抗氧化酶和抗氧化剂的影响不同,说明根瘤菌通过介导水黄皮抗氧化防御系统来应激镍胁迫,其在镍污染土壤中强化水黄皮的抗逆性有着重要的作用。

关键词：根瘤菌镍水黄皮抗氧化酶非酶抗氧化剂

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基于二值型数据的荣成天鹅湖菲律宾蛤仔空间分布与环境因子关系研究

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中国海洋大学学报（自然科学版） 2024年第4期54卷 51-59页

作者：董建宇胡成业王学锋杨晓龙张秀梅广东海洋大学水产学院广东湛江524088 浙江海洋大学水产学院浙江舟山316022

为了利用简化的二值型渔业数据研究物种空间分布与环境因子之间的关系。基于2017年四个季度山东半岛荣成天鹅湖的菲律宾蛤仔(Ruditapes philippinarum)实地调查数据,比较了广义加性模型(GAM)和广义线性模型(GLM)在处理二值型菲律宾蛤仔... 详细信息

为了利用简化的二值型渔业数据研究物种空间分布与环境因子之间的关系。基于2017年四个季度山东半岛荣成天鹅湖的菲律宾蛤仔(Ruditapes philippinarum)实地调查数据,比较了广义加性模型(GAM)和广义线性模型(GLM)在处理二值型菲律宾蛤仔渔业数据的表现,并利用GAM模型研究了天鹅湖的菲律宾蛤仔空间分布与环境因子之间的关系。研究显示:GAM模型在偏差解释率、模型评估效果和预测性能方面均优于GLM模型;水深、总有机质含量和叶绿素a浓度显著影响菲律宾蛤仔的空间分布(P<0.05)。菲律宾蛤仔的出现概率随叶绿素a浓度增加逐渐上升,随总有机质含量和水深的增加逐渐下降。研究结果表明,二值型简化数据能够有效地揭示菲律宾蛤仔空间分布与环境因子的关系。

关键词：菲律宾蛤仔广义加性模型(GAM) 广义线性模型(GLM) 环境因子空间分布

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经尿道钬激光前列腺中叶剜除术治疗前列腺中叶增生的中年患者的可行性研究

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中国男科学杂志 2024年第2期38卷 82-85页

作者：余东杨继旭夏汉清单秀梅王科尹心宝青岛市黄岛区中医医院泌尿外科山东青岛266599 青岛大学附属医院泌尿外科山东青岛266555

目的探讨经尿道钬激光前列腺中叶剜除术在低龄且以中叶增生为主的前列腺增生患者中应用。方法选择2022年1月至2022年6月于青岛大学附属医院泌尿外科以前列腺中叶增生入院,且有性生活需求的20例患者,术前评估前列腺突入膀胱程度(intraves... 详细信息

目的探讨经尿道钬激光前列腺中叶剜除术在低龄且以中叶增生为主的前列腺增生患者中应用。方法选择2022年1月至2022年6月于青岛大学附属医院泌尿外科以前列腺中叶增生入院,且有性生活需求的20例患者,术前评估前列腺突入膀胱程度(intravesical prostatic protrusion,IPP)均大于1.5 cm,行经尿道钬激光前列腺中叶剜除术,对其手术前后排尿症状、残余尿量、国际前列腺症状评分(international prostate symptom score,IPSS)、尿流率、尿失禁及勃起功能评分(International Index of Erectile Function⁃5,IIEF⁃5)、射精情况进行分析。结果患者排尿困难症状均明显改善,无尿失禁患者,术后1年回访,逆向射精患者1例,逆向射精发生率5%。结论以中叶增生为主的前列腺增生患者行单纯经尿道钬激光前列腺中叶剜除术,围手术期各项指标改善明显,具有明显的治疗效果,可减少逆向射精、尿失禁、膀胱颈挛缩的发生率。

关键词：经尿道钬激光良性前列腺增生前列腺中叶增生前列腺中叶剜除术

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White up-conversion luminescence and highly-sensitive optical temperature sensing in Na_(3)La(VO_(4))_(2):Yb,Er,Tm,Ho phosphors

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Journal of Rare Earths 2023年第7期41卷 981-988,I0001页

作者： Qi Xiao xiumei Yin Lin Lv Xinyao dong Na Zhou Kuichao Liu Xixian Luo Key Laboratory of New Energy and Rare Earth Resource Utilization of State Ethnic Affairs Commission Key Laboratory of Photosensitive Materials&Devices of Liaoning ProvinceSchool of Physics and Materials EngineeringDalian Minzu UniversityDalian 116600China Department of Physics Dalian Maritime UniversityDalian 116026China

In this work,tunable white up-conversion luminescence was achieved in the Yb^(3+),Er^(3+),Tm^(3+),Ho^(3+) codoped Na_(3)La(VO_(4))_(2) phosphors under 980 nm excitation.The emissions of three primary colors are mainly attributed to the ~2H_(11/2)/~4S_(3/2)→~4I_(15/2) transitions of Er^(3+),~1G_(4)→~3H_6 transition of Tm^(3+),and_5F_5→~5I_8 transition of Ho^(3+).White luminescence characteristics and mechanisms of up-conversion system were investigated in detail.In addition,the temperature sensing behaviors of multiple levels emission combinations for Na_(3)La(VO_(4))_(2):Yb^(3+),Er^(3+),Tm^(3+),Ho^(3+) were analyzed by employing thermally coupled and non-thermally coupled energy levels.Based on the emissions of ~3F_(2,3)/~1G_(4) energy levels,the maximum relative and absolute sensitivities were obtained to be 2.20%/K and 0.279 K^(-1).The design of up-conversion luminescence materials with high-quality white luminescence and excellent sensitivity performance is critical in the field of optical applications.

关键词： Up-conversion Na_(3)La(VO_(4))_(2) White luminescence Temperature sensing Sensitivity Rare earths

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Recent Advancements on Three‑Dimensional Electrospun Nanofiber Scaffolds for Tissue Engineering

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Advanced Fiber Materials 2022年第5期4卷 959-986页

作者： Yujie Chen Xutao dong Muhammad Shafiq Gregory Myles Norbert Radacsi xiumei Mo Shanghai Engineering Research Center of Nano‑Biomaterials and Regenerative Medicine State Key Laboratory for Modification of Chemical Fibers and Polymer MaterialsCollege of ChemistryChemical Engineering and BiotechnologyDonghua UniversitySongjiangShanghai 201600China School of Engineering Institute for Materials and ProcessesThe University of EdinburghKing’s BuildingsEdinburgh EH93FBUnited Kingdom

Electrospinning is widely accepted as a technique for the fabrication of nanofibrous three-dimensional(3D)scaffolds which mimic extracellular matrix(ECM)microenvironment for tissue engineering(TE).Unlike normal densely-packed two-dimensional(2D)nanofibrous membranes,3D electrospun nanofiber scaffolds are dedicated to more precise spatial control,endowing the scaffolds with a sufficient porosity and 3D environment similar to the in vivo settings as well as optimizing the properties,including injectability,compressibility,and bioactivity.Moreover,the 3D morphology regulates cellular interaction and mediates growth,migration,and differentiation of cell for matrix remodeling.The variation among scaffold structures,functions and applications depends on the selection of electrospinning materials and methods as well as on the post-processing of electrospun scaffolds.This review summarizes the recent new forms for building electrospun 3D nanofiber scaffolds for TE applications.A variety of approaches aimed at the fabrication of 3D electrospun scaffolds,such as multilay-ering electrospinning,sacrificial agent electrospinning,wet electrospinning,ultrasound-enhanced electrospinning as well as post-processing techniques,including gas foaming,ultrasonication,short fiber assembly,3D printing,electrospraying,and so on are discussed,along with their advantages,limitations and applications.Meanwhile,the current challenges and prospects of 3D electrospun scaffolds are rationally discussed,providing an insight into developing the vibrant fields of biomedicine.

关键词： Electrospun Nanofibers Three-dimensional Tissue engineering Regenerative medicine Scaffold Polymer

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“三调针法”联合重复功能性磁刺激治疗脊髓损伤后逼尿肌无力型神经源性膀胱临床疗效观察

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北京中医药大学学报 2024年第6期47卷 826-834页

作者：庞永强徐秀梅徐彦龙程子潇董春璇张燕琴张茜马涵甘肃中医药大学甘肃省中医院

目的观察“三调针法”联合重复功能性磁刺激(rFMS)治疗脊髓损伤后逼尿肌无力型神经源性膀胱的临床疗效。方法 120例脊髓损伤后逼尿肌无力型神经源性膀胱患者按照随机数字表法分为常规治疗组、“三调针法”治疗组、rFMS治疗组和综合治... 详细信息

目的观察“三调针法”联合重复功能性磁刺激(rFMS)治疗脊髓损伤后逼尿肌无力型神经源性膀胱的临床疗效。方法 120例脊髓损伤后逼尿肌无力型神经源性膀胱患者按照随机数字表法分为常规治疗组、“三调针法”治疗组、rFMS治疗组和综合治疗组，每组30例。常规治疗组给予常规康复治疗，“三调针法”治疗组在常规康复治疗的基础上予“三调针法”治疗(调神、调反射弧、调下焦和水道),rFMS治疗组在常规康复治疗的基础上予rFMS治疗，综合治疗组在常规康复治疗的基础上予“三调针法”和rFMS治疗。比较治疗前后各组患者初始尿意容量(FDV)、最大膀胱测量容量(MCC)、储尿期最大逼尿肌压(Pdet.max)、储尿期最大膀胱内压(Pves.max)、日均排尿次数、日均漏尿次数、残余尿量、神经源性膀胱症状评分，评定各组临床疗效。结果与治疗前比较，4组患者治疗后FDV、MCC、Pdet.max均升高，Pves.max、日均排尿次数、日均漏尿次数、残余尿量、神经源性膀胱症状评分均降低(均P<0.05)。治疗后，与常规治疗组比较，“三调针法”治疗组、rFMS治疗组、综合治疗组FDV、MCC、Pdet.max均升高，Pves.max、日均排尿次数、日均漏尿次数、残余尿量、神经源性膀胱症状评分均降低(均P<0.05)。治疗后，与“三调针法”治疗组、rFMS治疗组比较，综合治疗组FDV、MCC、Pdet.max均升高，Pves.max、日均排尿次数、日均漏尿次数、残余尿量、神经源性膀胱症状评分均降低(均P<0.05)。“三调针法”治疗组愈显率为86.2%(25/29),rFMS治疗组愈显率为85.7%(24/28),综合治疗组愈显率为92.6%(25/27),均高于常规治疗组的75.9%(22/29)。结论 “三调针法”、rFMS均能有效改善脊髓损伤后逼尿肌无力型神经源性膀胱患者膀胱功能状态，二者联合应用具有协同增效作用。

关键词：三调针法重复功能性磁刺激脊髓损伤逼尿肌无力型神经源性膀胱

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石油石化含油废水混凝气浮处理系统研究进展

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工业水处理 2024年第3期44卷 45-56页

作者：王庆吉胡景泽孙秀梅李东陈曦李颖陆浩然王列魏炜石油石化污染物控制与处理国家重点实验室北京102249 中国石油集团安全环保技术研究院有限公司北京102249 大庆油田第五采油厂黑龙江大庆163311 渤海装备辽河钻采装备分公司辽宁盘锦124080 渤海装备辽河热采机械公司辽宁盘锦124211

随着我国油气开发过程中主力区块油气含水率的不断攀升以及非常规油气资源的深入开发,油气开采伴生废水水量逐年增加。油气开采技术的不断更迭致使废水水质呈现油含量高且乳化稳定性强、悬浮物含量高且密度变小的特性。针对乳化油、分... 详细信息

随着我国油气开发过程中主力区块油气含水率的不断攀升以及非常规油气资源的深入开发,油气开采伴生废水水量逐年增加。油气开采技术的不断更迭致使废水水质呈现油含量高且乳化稳定性强、悬浮物含量高且密度变小的特性。针对乳化油、分散油和轻质悬浮固体的去除成为含油废水处理工艺中较为关键的环节。概述了混凝和气浮除油的原理及影响因素,综述了混凝气浮系统的研究现状,包括对气浮气泡产生方式、气浮池结构以及气浮耦合工艺等方面的研究进展,在此基础上提出通过旋流场与涡流场相结合,同时强化复合功能性药剂体系在涡流场中的破胶与聚结分离效果,实现集氧化、破胶、絮凝、气浮和分离等多种功能于一体的混凝气浮反应系统的开发及应用将是未来油气田污水处理的发展趋势。

关键词：含油污水混凝气浮反应装置一体化

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