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基于机载LiDAR点云的电力线提取和三维重建方法

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测绘与空间地理信息 2024年第1期47卷 219-221页

作者：李薇楚慧娟新疆维吾尔自治区第一测绘院新疆昌吉831100

从LiDAR点云数据中提取电力线进行三维重建已经成为安全巡检的重要技术手段。本文提出一种电力线提取与重建方法,对获取的LiDAR点云数据,通过高程阈值分割法和直线检测得到直线方程提取电力线,并通过电塔定位实现电力线分档;然后,通过... 详细信息

从LiDAR点云数据中提取电力线进行三维重建已经成为安全巡检的重要技术手段。本文提出一种电力线提取与重建方法,对获取的LiDAR点云数据,通过高程阈值分割法和直线检测得到直线方程提取电力线,并通过电塔定位实现电力线分档;然后,通过直线模型和悬链线模型结合的方法对提取的分档电力线进行三维建模。实验结果表明,该算法能实现电力线的提取和分档,且重建模型能实现电力线的三维重建,对电力巡线具有实际的应用意义。

关键词：三维激光点云电力线提取重建

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CCUS-EOR管道工程管材选择研究

油气田地面工程 2024年第6期43卷 1-8页

作者：来海雷褚会娟张会忠蒋风松朱海大庆油田设计院有限公司

由于国内关于超临界/密相CO_(2)管道输送的工程应用几乎为零,也无针对性的管材选择标准规范,因此,对CCUS-EOR全产业链地面工程技术体系与建设模式取得成果进行归纳总结,论述了CO_(2)管道管材选择标准的适用性和HFW钢管、SMLS钢管及SAWL... 详细信息

由于国内关于超临界/密相CO_(2)管道输送的工程应用几乎为零,也无针对性的管材选择标准规范,因此,对CCUS-EOR全产业链地面工程技术体系与建设模式取得成果进行归纳总结,论述了CO_(2)管道管材选择标准的适用性和HFW钢管、SMLS钢管及SAWL钢管的差异性及对CO_(2)管道输送的适应性,对CO_(2)管道输送的管材选择提出以下建议:CCUS-EOR管道具有难止裂、泄漏后温降大、易腐蚀等特点,管材应具有优良低温性能、较高止裂韧性和耐腐蚀性;虽然国内外CO_(2)管道输送还未形成具有科学性、全面性和系统性的标准体系,但可借鉴传统的石油、天然气管道材料和施工做法;管材选择的关键是钢管技术指标对使用要求的满足性,要综合考虑管材的价格、性能、冲击韧性等因素以及对工程条件的适应性。

关键词： CCUS-EOR 管材选择 HFW焊管 SAWL焊管 SMLS钢管

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GRK2 mediated degradation of SAV1 initiates hyperplasia of fibroblast-like synoviocytes in rheumatoid arthritis

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Acta Pharmaceutica Sinica B 2024年第3期14卷 1222-1240页

作者： Paipai Guo Ji Jiang Rui chu Feng He Mingli Ge Ruhong Fang Qiuyun Guan huijuan Cheng chunru Jiang Tiantian Su Zhenduo Zhu Hao Liu Wei Wei Shihao Zhang Qingtong Wang Institute of Clinical Pharmacology Anhui Medical UniversityKey Laboratory of Anti-inflammatory and Immune MedicineMinistry of EducationCollaborative Innovation Center of Anti-inflammatory and Immune MedicinesHefei 230032China School of Pharmacy Bengbu Medical CollegeBengbu 233030China The Third Affiliated Hospital of Anhui Medical University(the First People’s Hospital of Hefei) Hefei 230061China

Hyperplasia and migration of fibroblast-like synoviocytes(FLSs)are the key drivers in the pathogenesis of rheumatoid arthritis(RA)and joint destruction.Abundant Yes-associated protein(YAP),which is a powerful transcription co-activator for proliferative genes,was observed in the nucleus of inflammatory FLSs with unknown upstream mechanisms.Using Gene Expression Omnibus database analysis,it was found that Salvador homolog-1(SAV1),the pivotal negative regulator of the Hippo-YAP pathway,was slightly downregulated in RA synovium.However,SAV1 protein expression is extremely reduced.Subsequently,it was revealed that SAV1 is phosphorylated,ubiquitinated,and degraded by interacting with an important serine-threonine kinase,G protein-coupled receptor(GPCR)kinase 2(GRK2),which was predominately upregulated by GPCR activation induced by ligands such as prostaglandin E2(PGE2)in RA.This process further contributes to the decreased phosphorylation,nuclear translocation,and transcriptional potency of YAP,and leads to aberrant FLSs proliferation.Genetic depletion of GRK2 or inhibition of GRK2 by paroxetine rescued SAV1 expression and restored YAP phosphorylation and finally inhibited RA FLSs proliferation and migration.Similarly,paroxetine treatment effectively reduced the abnormal proliferation of FLSs in a rat model of collagen-induced arthritis which was accompanied by a significant improvement in clinical manifestations.Collectively,these results elucidate the significance of GRK2 regulation of Hippo-YAP signaling in FLSs proliferation and migration and the potential application of GRK2 inhibition in the treatment of FLSs-driven joint destruction in RA.

关键词： Rheumatoid arthritis Fibroblast-like synoviocytes G protein-coupled receptor kinase 2 Salvador homolog-1 Yes-associated protein

Click Synthesis of Thermosensitive Hydrogels by Catalyst-free 1,3-Dipolar Cycloaddition Reaction

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Click Synthesis of Thermosensitive Hydrogels by Catalyst-fre...

Removal of chromium(Ⅵ) from aqueous solution by carboxymethyl cellulose sodium/graphene oxide@Fe3O4 hydrogel microspheres

河南省化学会2016年学术年会

作者： Hongzheng Zhu huijuan chu Hongliang Wei Jing Zhu Gang Wang School of Chemistry and Chemical Engineering Henan University of Technology

The properties and structures of hydrogels are closely linked to the method of preparing hydrogels,therefore, it has been considered to be very important to develop new methods of preparing hydrogels.Among them, preparing hydrogels by alkyne-azide 1, 3-dipolar cycloaddition click reaction is an important method which has appeared recently. The reaction has some advantages such as simple, mild conditions, no toxic and volatile solvent, etc. However, the cytotoxicity of residual Cu catalyst brings a potential limitation of the reaction when it is used to synthesize and/or functionalize materials for biomedical applications. Herein, replacing alkyne by maleimide group, catalyst-free 1, 3-dipolar cycloaddition click reaction between azide and maleimide modified polymers was used to prepare thermosensitive hydrogels. First, three copolymers(denoted respectively as PT137, PT155, PT173) of2-hydroxyethyl methacrylate(HEMA), N-isopropyl acrylamide(NIPAM) and N, N-dimethylacrylamide(DMA) were prepared by controlling the feeding molar ratios(HEMA: NIPAM: DMA) to 1:3:7, 1:5:5,1:7:3, respectively. The polymeric dipolarophiles were prepared by introducing N-maleoyl alanine to the PT137, PT155, PT173, The polymeric dipolar was prepared by modifying the as-prepared PT137,PT155, PT173 with azidoacetic acid. Afterward, the above prepared polymeric dipolarophiles and polymeric dipolar were dissolved in water, and the thermosensitive hydrogels of different molar ratios were prepared through catalyst-free 1, 3-dipolar cycloaddition reaction. The products were characterized by GPC, FTIR, 1HNMR, SEM, TG and other instruments. The swelling behavior of the thermosensitive hydrogels was studied, and the results showed that the hydrogels had good abilities of swelling and thermosensitivily.

关键词： hydrogel 1,3-dipolar cycloaddition click reaction thermosensitivity

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Removal of chromium(Ⅵ) from aqueous solution by carboxymeth...

Fabrication of cellulose-based hydrogels for urea controlled release

河南省化学会2016年学术年会

作者： Jingjing Liu huijuan chu Hongliang Wei Yun Peng Jing Zhu Gang Wang School of Chemistry and Chemical Engineering Henan University of Technology

Cr(Ⅵ) is a soluble but highly toxic specie that is commonly employed in fields of metal finishing,steel fabrication, leather tanning, etc. Due to its poor biodegradability, the removal of Cr(Ⅵ) is mainly dependent on the technique of adsorption. However, traditional adsorbents like activated carbon, and bulk hydrogels possess the drawbacks of weak adsorption capacities and slow adsorption kinetics. To address these issues, our group fabricated carboxymethyl cellulose sodium(CMC)/graphene oxide@FeO(CMC/GO@FeO) hydrogel microspheres via a spray-drying method. In this design,both CMC and graphene oxide are responsible for the adsorption of Cr(Ⅵ) via the combination of electrostatic interactions, while the Fe3O4 nanoparticles deposited on the surface of GO is used for the facile magnetic separation of CMC/GO@FeO microspheres from wastewater. Moreover, the large surface area of the microspheres significantly facilitated the adsorption of Cr(Ⅵ), largely reducing the time of adsorption equilibrium to 30 min. Overall speaking, the exceptional adsorption properties of our CMC/GO@FeO hydrogel microspheres, as well as the spray drying method, make them very promising in the mass production of adsorbents for the removal of chromium species.

关键词： graphene oxide magnetic separation spray drying hydrogel microspheres

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Fabrication of cellulose-based hydrogels for urea controlled...

社会学如何研究警察——美国警察与社会研究述评

河南省化学会2016年学术年会

作者： Yun Peng huijuan chu Hongliang Wei Jingjing Liu Jing Zhu Gang Wang School of Chemistry and Chemical Engineering Henan University of Technology

As we known, cellulose is the most abundant renewable material, which is the major structural component of plants. Due to its renewability, low cost, and attractive physical and chemical properties,cellulose has been found various applications in many fields such as waste treatment, oil recovery,textile finishing, and food additives. Herein, cellulose-based hydrogels were prepared and used to control the release of urea. Taking into account of its abundance in nature, biodegradability and lower environmental impact, the system fabricated here has potential application in urea controlled release.First, cellulose was dissolved in the solution of 6 wt % Na OH/4 wt % urea aqueous at low temperature,and making the mass concentration of cellulose is 4 wt %, then adding a preset volume of epichlorohydrin and mixing evenly. Gelation happened after heating to 60℃for 6 hours. Second, to soak out Na OH fully, the as-prepared hydrogels were immersed in deionized water until the p H of the soaking water was 7. Third, the hydrogels were dipped in ethanol solution of stearic acid(20 wt %) for30 min to displace the water in the hydrogels, and then in an aqueous solution of urea(30 wt %) for 15 min to load urea. The samples were cleaned with deionized water and dried. The swelling kinetics of hydrogels was measured by a general gravimetric method. The amount of urea released from the hydrogels was determined by UV-vis spectrophotometer with para-dimethyl-amino- benzaldehyde as chromogenic agent and calculated according to the calibrated standard curve. The results indicated that the swelling ratio of the hydrogels decreased by 80% and the release time of urea in the hydrogels increased by 50% as well after introducing stearic acid, a hydrophobic component.

关键词： cellulose hydrogels stearic acid slow release fertilizer

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社会学研究 2019年第1期 210-241,246页

作者：储卉娟中国人民大学社会与人口学院

20世纪60年代,美国社会学家系统进入警察研究,带动了警察社会学与警务改革的双重发展。本文尝试回到这一知识领域兴起的具体情境,将警察与社会的研究成果与脉络重新放入警务提升运动的社会背景之中,探究社会学如何开始对警察的研究,造... 详细信息

20世纪60年代,美国社会学家系统进入警察研究,带动了警察社会学与警务改革的双重发展。本文尝试回到这一知识领域兴起的具体情境,将警察与社会的研究成果与脉络重新放入警务提升运动的社会背景之中,探究社会学如何开始对警察的研究,造就了哪些重要的知识系统,以及这些知识如何进入警察制度的内部改革。本文旨在具体展现社会学研究与警务改革的互相促进,深刻理解全世界范围内铺开的新警务模式及其带来的治理变革,并展望中国社会学研究警察领域的核心问题与理论空间。

关键词：警察警务警察与社会

暴力的弱者:对传统纠纷解决研究的补充——基于东北某市监狱的实证研究

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学术研究 2010年第2期 60-69页

作者：储卉娟北京大学社会学系

民间社会纠纷解决机制是法社会学的重要课题及研究国家—法—社会关系的有力切入点。传统纠纷解决理论重点探讨纠纷如何被解决,并在此基础上建立各种纠纷解决机制之间的关系模型。东北四所监狱的调查数据显示:存在被既往理论分析长期忽... 详细信息

民间社会纠纷解决机制是法社会学的重要课题及研究国家—法—社会关系的有力切入点。传统纠纷解决理论重点探讨纠纷如何被解决,并在此基础上建立各种纠纷解决机制之间的关系模型。东北四所监狱的调查数据显示:存在被既往理论分析长期忽视的一类纠纷,它们无法被例行化的解决手段所消化,最终"溢出"纠纷解决机制之外,成为国家暴力治理的对象。这类纠纷不能被消化往往是出于纠纷解决过程中的原因;其中很大比例属于上行纠纷,发生在"相对经济地位较低"的服刑人员和"相对经济地位较高"的受害者之间;大部分纠纷的行动者对于法律之外的制度性纠纷解决机制的功能,存在普遍的不信任,也缺乏参与感。这一类纠纷的发现,在一定程度上对传统国家—法—社会分析模式提出了挑战。

关键词：社会纠纷纠纷解决机制国家-社会法社会学

子痫前期孕妇血清铁蛋白、胱抑素C水平与妊娠结局的相关性分析

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临床研究 2022年第10期30卷 99-103页

作者：褚慧娟睢县妇幼保健院产科河南商丘476900

目的探究子痫前期孕妇血清铁蛋白(SF)、胱抑素C(CysC)水平与妊娠结局的相关性。方法选取2019年4月至2021年1月睢县妇幼保健院75例子痫前期孕妇的数据资料进行回顾性分析,将75名患者设为观察组,观察组内根据病情程度划分为轻度组41例和... 详细信息

目的探究子痫前期孕妇血清铁蛋白(SF)、胱抑素C(CysC)水平与妊娠结局的相关性。方法选取2019年4月至2021年1月睢县妇幼保健院75例子痫前期孕妇的数据资料进行回顾性分析,将75名患者设为观察组,观察组内根据病情程度划分为轻度组41例和重度组34例,选取同期的70名健康孕妇作为对照组,根据观察组孕妇是否出现不良妊娠结局做进一步分组,分为结局良好组和结局不良组,对比重度组,轻度组,对照组的血清SF、CysC水平。分析观察组孕妇出现不良妊娠结局的情况。子痫前期孕妇出现不良妊娠结局的单因素、多因素分析结果。结果重度组,轻度组,对照组的血清SF、CysC水平对比,差异有统计学意义(P<0.05)。观察组患者中共出现不良妊娠结局的个体33例,妊娠结局良好的个体42例。多因素分析结果显示,子痫前期孕妇的血清SF水平、血清CysC水平均成为是否出现不良妊娠结局的独立影响因素,差异均有统计学意义(P<0.05)。利用血清SF水平、血清CysC水平、logistic预测概率对于子痫前期孕妇是否会出现不良妊娠结局进行推断,约登指数分别为59.74%、61.90%、72.94%。结论子痫前期孕妇的血清SF、CysC水平能够反映出病情程度,且与妊娠结局密切相关,可作为评估不良妊娠结局的依据。

关键词：子痫前期妊娠结局铁蛋白胱抑素C 相关性