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回火温度对5Cr5MoSiV1钢显微组织和性能的影响

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机械工程材料 2024年第5期48卷 15-19页

作者：郭志凯连明洋曹培泽王超锋原晓伟中铁工程装备集团有限公司郑州450016

对球化退火态5Cr5MoSiV1钢进行1050℃×1 h的淬火以及不同温度(515,530,560,590,620℃)保温1 h的回火处理,研究了回火温度对该钢显微组织、硬度、冲击韧性和耐磨性能的影响。结果表明:不同温度回火后5Cr5MoSiV1钢的组织均为回火索氏体... 详细信息

对球化退火态5Cr5MoSiV1钢进行1050℃×1 h的淬火以及不同温度(515,530,560,590,620℃)保温1 h的回火处理,研究了回火温度对该钢显微组织、硬度、冲击韧性和耐磨性能的影响。结果表明:不同温度回火后5Cr5MoSiV1钢的组织均为回火索氏体和少量碳化物,随着回火温度升高,碳化物增多并发生聚集长大,当回火温度超过560℃时,基体回复和再结晶加剧,马氏体板条状特征逐渐模糊;随着回火温度的升高,5Cr5MoSiV1钢的硬度降低,冲击吸收能量先基本不变后升高,磨损质量损失呈先波动下降后升高的趋势。5Cr5MoSiV1钢合适的回火温度为590℃,此时该钢兼具良好的冲击韧性和耐磨性能,硬度为51.1 HRC,冲击吸收能量为25.7 J,磨损质量损失为3.864 g。

关键词： 5Cr5MoSiV1钢回火温度显微组织冲击韧性耐磨性能

补益肝肾、活血通络联合修复软骨法治疗股骨头坏死

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吉林中医药 2019年第12期39卷 1602-1604,1608页

作者：罗勇杨敏钟小龙郭明阳刘德芳呼永河中国人民解放军西部战区总医院

目的观察口服仙灵骨葆胶囊联合髓关节腔灌注丹红注射液、玻璃酸钠注射液治疗早中期股骨头坏死的临床疗效。方法回顾性分析2016年7月一2017年8月医治的65例早中期股骨头坏死患者,对照组(33例)口服仙灵骨葆胶囊,治疗组(32例)在对照组的基... 详细信息

目的观察口服仙灵骨葆胶囊联合髓关节腔灌注丹红注射液、玻璃酸钠注射液治疗早中期股骨头坏死的临床疗效。方法回顾性分析2016年7月一2017年8月医治的65例早中期股骨头坏死患者,对照组(33例)口服仙灵骨葆胶囊,治疗组(32例)在对照组的基础上加用髓关节腔灌注丹红注射液、玻璃酸钠注射液。疗效评估采用临床评定及影像学评定相结合的方法。临床评定依据Harris评分法,对治疗后患者的疼痛程度、关节畸形、关节活动度、关节功能进行评分,评定优良率;观察X线片评定股骨头影像学进展情况。观察治疗期间患者生化指标及药物不良反应发生情况。结果治疗组Harris评分的优良率高于对照组,差异有统计学意义(P<0.05);治疗组在改善疼痛程度、关节畸形、关节活动度及Harris总评分方面优于对照组,差异有统计学意义(PV0.05);影像学资料表明,治疗组影像稳定率高于对照组,差异有统计学意义(PV0.05)。结论中西医结合补益肝肾、活血通络及修复软骨法治疗早中期股骨头坏死疗效显著且不良反应少。

关键词：股骨头坏死丹红注射液髓关节腔灌注玻璃酸钠注射液仙灵骨葆胶囊补益肝肾

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晚期甲状腺髓样癌的药物治疗进展

沈阳药科大学学报 2024年第4期41卷 518-525页

作者：薛昊张铭洋郭国贤刘翥辽宁省肿瘤医院/大连理工大学肿瘤医院辽宁沈阳110044 大连医科大学附属第二医院辽宁大连116044 辽宁省检验检测认证中心辽宁沈阳110010

甲状腺髓样癌发病率低但恶性程度高,具有早期淋巴结和远端转移的倾向,预后较差。目前对于甲状腺髓样癌的有效治疗手段仍是外科手术,但对于晚期并且不能通过手术根治的甲状腺髓样癌患者,参加药物临床试验是一种有效的治疗手段。甲状腺髓... 详细信息

甲状腺髓样癌发病率低但恶性程度高,具有早期淋巴结和远端转移的倾向,预后较差。目前对于甲状腺髓样癌的有效治疗手段仍是外科手术,但对于晚期并且不能通过手术根治的甲状腺髓样癌患者,参加药物临床试验是一种有效的治疗手段。甲状腺髓样癌的发病主要原因是RET原癌基因突变,主要分为散发性和遗传性甲状腺髓样癌两大类。其中散发性甲状腺髓样癌在临床上最多见、而遗传性甲状腺髓样癌临床上较少见但具有发病年龄偏低和恶性程度更高的特点。相较于其他瘤种,目前针对晚期甲状腺髓样癌患者仍缺少有效的治疗有段,仍急需开发有效的治疗药物。本文按甲状腺髓样癌发病相关的靶点和信号通路介绍了针对晚期甲状腺髓样癌的临床研究,并简要介绍了其研究的主要结果和对应的药物相关的不良事件。

关键词：局部晚期/晚期甲状腺髓样癌靶向治疗临床试验

Design of functionalized fluorescent ionic liquid and its application for achieving significant improvements in Al^3t detecting

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Green Energy & Environment 2020年第2期5卷 195-202页

作者： Lu Gan Jiachen guo Siying Che Qiaoxin Xiao mingyang Wang Jienan You Congmin Wang School of Chemistry Zhejiang UniversityHangzhou310027China Key Laboratory of Biomass Chemical Engineering of Ministry of Education Zhejiang UniversityHangzhou310027China

Specific fluorophore was introduced into ionic liquid based on its tunability,thus a kind of novel fluorescent ionic liquid probe[P66614][HQS]was designed,synthesized and *** with non-fluorescent HQS,ionic liquid[P66614][HQS]emitted a certain amount of fluorescence,which could be attributed to the well-delocalized frontier orbitals and its charge transfer character,as demonstrated by quantum chemical *** the interaction of[P66614][HQS]with metal ions,the application for detecting specific substance as a chemical sensor,such as Al3+was *** with the traditional probe HQS,significant improvements in Al^3+detecting was achieved by[P66614][HQS]with stronger binding ability,better sensitivity and *** better performance of[P66614][HQS]was contributed to the changed charge distribution,leading to the stronger binding *** believe that this new fluorescent ionic liquid exhibited unique properties in detecting Al^3+in aqueous solution,which would broaden the application of ionic liquids.

关键词： Ionic liquid Fluorescent probe Al^3+ Significant improvements

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铁路货车智能铆接系统的研究与设计

铁道车辆 2024年第2期62卷 113-117页

作者：李伟杨林罗明洋郭龙毛俊眉山中车紧固件科技有限公司四川眉山620010

为保证货车运行的可靠性,在转向架上采用了铆接技术。短尾拉铆销在铆接前后从外形上看没有明显差异,操作人员在安装时还需进行其他部件的装配工作,常造成铆接不到位、漏铆等操作问题,将会给实际运用中带来严重的安全隐患。针对铁路货车... 详细信息

为保证货车运行的可靠性,在转向架上采用了铆接技术。短尾拉铆销在铆接前后从外形上看没有明显差异,操作人员在安装时还需进行其他部件的装配工作,常造成铆接不到位、漏铆等操作问题,将会给实际运用中带来严重的安全隐患。针对铁路货车转向架基础制动梁组装工序中出现的拉铆钉的漏铆、铆接不到位等问题,文章研究了一种检测铆接质量和铆接位置的方法。在铆接过程中采集流量传感器和压力传感器信号,间接得到铆接力与铆接位移,绘制铆接力与位移关系曲线。利用经验阈值法对铆接曲线进行分析,判断铆接结果的质量。同时,采集每个铆接位置的背景图像并提取像素点特征值,利用主成分分析法(PCA)对特征值进行降维处理。最后,利用卷积神经网络(CNN)进行训练和识别。试验结果表明,此方法能够根据合格曲线正确完成铆接结果的判断,并能准确地判断出铆接位置,可为铁路货车的行车安全提供一种有效的技术保障。

关键词：铆接系统质量判断位置识别主成分分析

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地震精细勘探

吐哈油气 2002年第3期7卷 238-240,310页

作者：衣令春何明阳郭红启张志更中国石油吐哈石油勘探开发指挥部地球物理研究所新疆哈密839009

为了消除井、炮坑深度等因素造成的时差影响,从而使得共中心点道集內各道反射层信号自激自收时间相同,达到同相叠加之目的,需要做两方面工作。一方面,切实按照勘探规程要求,确保野外施工精度,炮点、检波点施工位置准确,井、坑深度记录准... 详细信息

为了消除井、炮坑深度等因素造成的时差影响,从而使得共中心点道集內各道反射层信号自激自收时间相同,达到同相叠加之目的,需要做两方面工作。一方面,切实按照勘探规程要求,确保野外施工精度,炮点、检波点施工位置准确,井、坑深度记录准确,使得物理点施工高程与测量成果相符;另一方面,在室內资料处理过程中,除了应用静校正资料消除低、降速带对地震资料的影响外,还需要根据班报记录消除井、坑深度时差对地震资料造成的影响,从而提高资料信噪比和分辨率。

关键词：组合随机干扰时差多次覆盖分辨率信噪比

Characteristics of Shale Reservoir and Sweet Spot Identification of the Lower Cambrian Niutitang Formation in Northwestern Hunan Province, China

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Acta Geologica Sinica(English Edition) 2019年第3期93卷 573-587页

作者： QIN mingyang CAO Zheng guo Jianhua HUANG Yanran SUN Lianpu DONG Li Central South University Press Changsha 410083China School of Geosciences and Info-Physics Engineering Central South UniversityChangsha 410083China The Survey Academy of Coal Geology in Hunan Changsha 410014China School of Geosciences China University of PetroleumQingdao 266580China School of Petroleum Engineering Chongqing University of Science and TechnologyChongqing 401331China Hunan Provincial Key Laboratory of Shale Gas Resource Utilization Hunan University of Science and TechnologyXiangtan411201China Sino Geotech(Beijing)Science&Technology Co. Ltd.Beijing 100020China Exploration&Production Research Institute SINOPEC Beijing 100083China Shandong Provincial Key Laboratory of Depositional Mineralization&Sedimentary Mineral Shandong University of Science and TechnologyQingdao 266590China

The accumulation and productivity of shale gas are mainly controlled by the characteristics of shale reservoirs;study of these characteristics forms the basis for the shale gas exploitation of the Lower Cambrian Niutitang Formation(Fm),Southern *** this study,core observation and lithology study were conducted along with X-ray diffraction(XRD)and electronic scanning microscopy(SEM)examinations and liquid nitrogen(N2)adsorption/desorption and CH4 isothermal adsorption experiments for several exploration wells in northwestern Hunan Province,*** results show that one or two intervals with high-quality source rocks(TOC>2 wt%)were deposited in the deep-shelf *** source rocks,which were mainly composed of carbonaceous shales and siliceous shales,had high quartz contents(>40 wt%)and low clay mineral(50 nm in diameter).The shale reservoir has strong adsorption capacity for *** Langmuir volume(VL)varied from 1.63 to 7.39 cm^3/g,with an average of 3.95 cm^3/*** characteristics of shale reservoir are controlled by several factors:(1)A deep muddy continental shelf is the most favorable environment for the development of shale reservoirs,which is controlled by the development of basic materials.(2)The storage capacity of the shale reservoir is positively related to the TOC contents and plastic minerals and negatively related to cement minerals.(3)High maturity or overmaturity leads to the growth of organic pores and microfractures,thereby improving the reservoir storage *** can be deduced that the high percentage o

关键词： Northwestern Hunan Province Niutitang Formation reservoir characteristics control factors sweet spots identification

Rational design of palladium single-atoms and clusters supported on silicoaluminophosphate-31 by a photochemical route for chemoselective hydrodeoxygenation of vanillin

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Nano Research 2021年第11期14卷 4347-4355页

作者： Xiaowen Lu Chunmu guo mingyang Zhang Leipeng Leng J.Hugh Horton Wei Wu Zhijun Li Joint International Research Laboratory of Advanced Chemical Catalytic Materials&Surface Science College of Chemistry and Chemical EngineeringNortheast Petroleum UniversityDaqing163318China National Center for International Research on Catalytic Technology School of Chemistry and Material ScienceHeilongjiang UniversityHarbin150080China Department of Chemistry Queen’s UniversityKingstonK7L 3N6Canada

Chemoselective hydrodeoxygenation of vanillin is of great importance in converting biomass into high value-added ***,we describe a facile photochemical route to access palladium single atoms and clusters supported on silicoaluminophosphate-31(SAPO-31)as a highly active,chemoselective,and reusable catalyst for hydrodeoxygenation of *** by aberration-corrected high-angle annular dark-field scanning transmission electron microscopy,extended X-ray absorption fine structure measurement,and CO-absorbed diffuse reflectance infrared Fourier transform spectroscopy reveal the atomically dispersed palladium single atoms and clusters are loosely bonded and randomly dispersed,without forming strong palladium-palladium metallic bonding,over the SAPO-31 *** catalyst,with a full metal availability to the reactants,exhibits exceptional catalytic activity(TOF:3,000 h^(−1),Yield:>99%)in the hydrodeoxygenation of vanillin toward 2-methoxy-4-methylphenol(MMP)under mild conditions(1 atm,80°C,30 min),along with excellent stability,scalability(up to 100-fold),and wide substrate *** superior catalytic performance can be attributed to the synergistic effect of the positively charged palladium single atoms and fully exposed clusters,as well as the strong metal-support *** work may offer a new avenue for the design and synthesis of fully exposed metal catalysts with targeted functionalities.

关键词： heterogeneous catalysis photochemical reduction palladium single atoms and clusters atomic dispersion hydrodeoxygenation vanillin

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城市快速路车辙大修设计探讨

市政技术 2010年第3期28卷 53-56页

作者：郭明洋张玉轻乔捷刘宝林柳浩胡冬梅北京市市政专业设计院有限责任公司北京100037 北京市城市道路养护管理中心北京100031 北京市政路桥建材集团有限公司北京100176

结合北京市莲花池西路(西五环—西六环)车辙大修设计实例,对城市快速路车辙的检测与评价、病害成因分析、材料与结构设计、施工质量控制与管理等关键问题进行了探讨和总结,以期提高快速路车辙大修的设计水平,保证车辙大修的工程质量和... 详细信息

结合北京市莲花池西路(西五环—西六环)车辙大修设计实例,对城市快速路车辙的检测与评价、病害成因分析、材料与结构设计、施工质量控制与管理等关键问题进行了探讨和总结,以期提高快速路车辙大修的设计水平,保证车辙大修的工程质量和应用效果。

关键词：快速路沥青路面车辙大修