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全球漏磁管道检测技术发明专利发展趋势

油气储运 2019年第10期38卷 1090-1094页

作者：朱青松郝瑞参贾俊良刘宁宇金俞鑫北京电子科技职业学院汽车工程学院中国石油管道公司

漏磁管道检测技术是一种应用较为广泛的无损检测技术。为了帮助中国企业了解更多的行业竞争态势,合理制定企业知识产权布局,对近年来漏磁检测技术相关专利信息进行了系统梳理。通过检索全球漏磁管道检测技术领域的专利信息,分析了漏磁... 详细信息

漏磁管道检测技术是一种应用较为广泛的无损检测技术。为了帮助中国企业了解更多的行业竞争态势,合理制定企业知识产权布局,对近年来漏磁检测技术相关专利信息进行了系统梳理。通过检索全球漏磁管道检测技术领域的专利信息,分析了漏磁管道检测技术在全球的专利布局情况和主要国家、主要申请人的专利布局策略。研究结果表明:近年来中国在漏磁管道检测技术方面的专利申请量和公开量增长迅猛,国外申请量保持平稳态势;国外主要申请人全部为企业,而中国主要申请人为高校、科研院所等,说明中国有大量研究成果尚停留在实验室阶段,有待实现产业应用。

关键词：管道漏磁检测专利

Effect of age on click-evoked otoacoustic emission A systematic review

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Neural Regeneration Research 2012年第11期7卷 853-861页

作者： Jinfeng liu ningyu Wang Department of Otorhinolaryngology Head and Neck Surgery Beijing Chaoyang HospitalCapital Medical UniversityCollege of OtolaryngologyCapital Medical UniversityKey Laboratory of Otolaryngology Head and Neck SurgeryBeijing 100020China

OBJECTIVE：The aims of this study were to investigate the changes of the total intensity of transient evoked otoacoustic emission（TEOAE） and signal-to-noise ratio in various frequency bands as a function of aging,and to explore the role of age-related decline of cochlear outer hair *** SOURCES：The literature was searched using the PubMed database using ＇transient-evoked otoacoustic emissions＇ as a *** were limited as follows：Species was ＇Humans＇;languages were ＇English and Chinese＇;publication date between 1990-01-01 and *** references of the found were also searched to obtain additional *** SELECTION：Inclusion criteria：（1） Articles should involve the total TEOAE level or signal-to-noise ratio.（2） The measurement and analysis system used was Otodynamics ILO analysis system（ILO88,ILO92,ILO96 or ILO292）.（3） Studies involved groups of greater than 10 subjects and TEOAE results were from normally hearing ears.（4） If more papers from the same author or laboratory analyzed the same subjects,only one was *** OUTCOME MEASURES：The correlations of the age scale with the total level and signal-to-noise ratio of TEOAE was determined,***：（1） TEOAE total level gradually increased until 2 months of age,and then decreased with increasing *** negative correlations between total TEOAE level and age were found（r =-0.885,P = 0.000）.（2） The most rapid decrease of TEOAE amplitude occurred at 1 year *** total TEOAE level decreased about 4.25 dB SPL between 2 months to 1 year old,then about 0.26-0.52 dB SPL from 1 year to 10 years old,about 0.23 dB SPL from 11 years to 25 years old,and about 0.14 dB SPL from 26 years to 60 years old.（3） The signal-to-noise ratio in the frequency bands centered at 1.5,2,3 and 4 kHz decreased with increasing age after 2 months of *** negative correlations between the signal-to-noise ratio and age were found for frequency bands ranging from 1.5 kHz to 4 kHz,with the hig

关键词： age transient-evoked otoacoustic emission signal-to-noise ratio outer hair cells meta-analysis

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基于功率流的水泵隔振研究与控制

工业安全与环保 2013年第6期39卷 16-18页

作者：孔祥军郑东鸣刘柠禹赵桂新于焕臣辽宁石油化工大学中国石油抚顺石化分公司

以某小区水泵隔振治理为例,应用功率流理论对水泵隔振系统中的参数对基础振动的影响进行研究。将水泵隔振系统简化为单层隔振系统的功率流隔振模型,依据电-力类比的方法,通过编写的Mat-lab应用程序,计算并绘制了质量块有无、质量块质量... 详细信息

以某小区水泵隔振治理为例,应用功率流理论对水泵隔振系统中的参数对基础振动的影响进行研究。将水泵隔振系统简化为单层隔振系统的功率流隔振模型,依据电-力类比的方法,通过编写的Mat-lab应用程序,计算并绘制了质量块有无、质量块质量变化和基础区域面密度对传递到基础的功率流和振动速度的影响曲线。研究表明,质量块对基座的速度和功率流有明显的降低,增加质量块质量对幅值降低的影响不明显,增加基础区域面密度有利于隔振。

关键词：功率流隔振水泵机组

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制药工业智能化现状及互联网技术的应用

自动化与仪器仪表 2019年第1期 171-173,177页

作者：刘宁宇李清黎张玉军天方药业有限公司河南驻马店463000

为了提高制药工业的智能化水平,在互联网环境下,进行生产作业线、工序和制药设备的智能控制优化设计,提出基于自适应均衡博弈的制药工业智能化控制模型,分析制药工业的智能化现状以及互联网的应用水平,在柔性工序体系结构下进行制药工... 详细信息

为了提高制药工业的智能化水平,在互联网环境下,进行生产作业线、工序和制药设备的智能控制优化设计,提出基于自适应均衡博弈的制药工业智能化控制模型,分析制药工业的智能化现状以及互联网的应用水平,在柔性工序体系结构下进行制药工业智能化控制的约束参量分析,设计制药作业线的优化调度方案,采用自适应均衡博弈方法进行制药智能化设备和加工工序的优化配置,结合物联网和物联网技术进行制药工业的智能化网络控制,提高制药工业的智能化和网络化管理与控制水平,实现制药工业智能化控制模型优化设计。仿真结果表明,采用该模型进行制药工业智能化设计,提高了制药的效率和设备利用率,优化了制药工序。

关键词：制药工业智能化控制自适应均衡博弈互联网技术

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油水分离用疏水棉布的制备与表征

合成技术及应用 2019年第3期34卷 6-9页

作者：张幼维 Rajnesh Kumar 刘宁宇赵炯心东华大学材料科学与工程学院

采用分步乳液聚合法,合成了聚甲基丙烯酸甲酯/聚甲基丙烯酸纳米水凝胶。将其化学键接到棉布表面,制备了疏水棉布。利用动态光散射、透射电镜、扫描电镜、红外等对纳米水凝胶的尺寸和形貌,改性棉布的形貌、化学组成、疏水性等进行了表征... 详细信息

采用分步乳液聚合法,合成了聚甲基丙烯酸甲酯/聚甲基丙烯酸纳米水凝胶。将其化学键接到棉布表面,制备了疏水棉布。利用动态光散射、透射电镜、扫描电镜、红外等对纳米水凝胶的尺寸和形貌,改性棉布的形貌、化学组成、疏水性等进行了表征。结果表明,改性棉布具有良好的疏水性,可选择性吸附水下的油滴和水上的油层,并可实现油水混合物的高效分离。

关键词：聚甲基丙烯酸纳米水凝胶疏水棉布油水分离

Limitations of the homogenization process of bulk martensitic mold steel-depending on the comprehensive manifestation of various strengthening

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Journal of Materials Science & Technology 2022年第22期117卷 120-132页

作者： Hanghang liu Paixian Fu Hongwei liu Chen Sun ningyu Du Dianzhong Li Shenyang National Laboratory for Materials Science Shenyang 110016China School of Materials Science and Engineering University of Science and Technology of ChinaShenyang 110016China Institute of Metal Research Chinese Academy of SciencesShenyang 110016China

A homogenization treatment(1250 °C + 12 h) was carried out to minimize the micro-segregation of bulk 718H martensitic mold steel, as verified by advanced experimental characterization and kinetic model of diffusion. However, new research found that there are still limitations in the use of the homogenization process. The result indicates that the chemical heterogeneity can be significantly reduced after homogenization. The segregation ratio of Cr and Mo elements of sample decreased by 40.9% and 35.6% of the original level, respectively. Simultaneously, the test steel with higher strength and toughness is produced by controlling micro-segregation tempered from 540 °C to 650 °C. Importantly, it reveals that the impact energy is increased by up to 27.3%. The isotropy of impact energy in different directions can reach 0.89,resulting in an overall improvement in the isotropy. Toughness mainly depends on the orientation relationship between the crack propagation direction and the band segregation region. The chain carbides formed due to the decomposition of the micro-segregated region during tempering are considered the main source of cracks. The more evenly distributed the subsequent tempered carbides after homogenization, resulting in an increase in toughness. However, an abnormal phenomenon is found in which the yield strength after homogenization is lower than that of the untreated sample tempered at 700 °C. This result can be attributed to the combined influences of precipitation strengthening and fine grain strengthening by analyzing various strengthening mechanisms. The mutually restrictive strengthening effect leads to the limitations of the homogenization process of bulk martensitic mold steel.

关键词： Martensitic mold steel Strength-toughness Micro-segregation Synergistic strengthening

CBX7基因与膀胱癌转移的相关性及其对细胞侵袭能力影响

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现代肿瘤医学 2015年第1期23卷 74-76页

作者：解大龙张辉刘宁宇郭艳佟晓杰中国医科大学基础医学院神经生物教研室辽宁沈阳110001 中国医科大学附属盛京医院泌尿外科辽宁沈阳110001 中国医科大学基础医学院组胚教研室辽宁沈阳110001 中国医科大学附属口腔医院中心实验室辽宁沈阳110001

目的:探讨CBX7基因与膀胱癌转移的相关性及其过表达对膀胱癌细胞侵袭能力的影响。方法:应用荧光定量PCR检测膀胱癌组织中CBX7 mRNA的表达。构建CBX7真核表达载体pc DNA-CBX7,转染膀胱癌T24细胞,检测转染后CBX7蛋白的表达以及T24细胞的... 详细信息

目的:探讨CBX7基因与膀胱癌转移的相关性及其过表达对膀胱癌细胞侵袭能力的影响。方法:应用荧光定量PCR检测膀胱癌组织中CBX7 mRNA的表达。构建CBX7真核表达载体pc DNA-CBX7,转染膀胱癌T24细胞,检测转染后CBX7蛋白的表达以及T24细胞的侵袭能力。结果:CBX7基因在膀胱癌组织中明显下调,而且侵袭性膀胱癌组织中CBX7的表达显著低于浅表性膀胱癌;pc DNA-CBX7转染后能够显著升高T24细胞CBX7的表达量;CBX7过表达的T24细胞穿透滤膜的数量明显减少。结论:CBX7基因与膀胱癌的转移相关,其过表达能够降低T24细胞的侵袭能力。

关键词：膀胱癌转移 CBX7基因侵袭

Effect of vanadium micro-alloying on the microstructure evolution and mechanical properties of 718H pre-hardened mold steel

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Journal of Materials Science & Technology 2019年第11期35卷 2526-2536页

作者： Hanghang liu Paixian Fu Hongwei liu Chen Sun ningyu Du Dianzhonga Li Institute of Metal Research Chinese Academy of SciencesShenyang 110016China School of Materials Science and Engineering University of Science and Technology of ChinaShenyang 110016China Shenyang National Laboratory for Materials Science Shenyang 110016China

The effects of different contents of vanadium(V)(0.1,0.2,and 0.3 wt%)on the microstructure evolution and mechanical properties of 718H steel were *** precipitate was characterized by means of atom probe tomography(APT)and bright-field transmission electron microscopy(TEM).The increase in V content has great benefits for strength,but has an adverse effect on impact *** strength increase can be attributed to the influence of V addition on dislocation density,misorientation gradient,and fine scale MC *** strengthening mainly contributes to the V-added steel by analyzing various strengthening ***,fine scale MC precipitates can pin dislocation leading to a decrease in its mobility.A large number of immovable dislocations will increase the dislocation accumulation,internal stress and brittle cracking,resulting in a gradual decrease in impact toughness with the V *** addition,compared with V-free steel,the dissolved V content in austenite decreases the grain boundary energy and inhibits the diffusion of the C atoms,ultimately reducing the transformation range of pearlite(P).

关键词： 718H steel Vanadium Microstructure Mechanical properties

Effects of Rare Earth elements on microstructure evolution and mechanical properties of 718H pre-hardened mold steel

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Journal of Materials Science & Technology 2020年第15期47卷 245-256页

作者： Hanghang liu Paixian Fu Hongwei liu Yanfei Cao Chen Sun ningyu Du Dianzhong Li Shenyang National Laboratory for Materials Science Shenyang 110016China School of Materials Science and Engineering University of Science and Technology of ChinaShenyang 110016China Institute of Metal Research Chinese Academy of SciencesShenyang 110016China

718 H Pre-ha rdened mold steels with diffe rent Rare Earth(RE) contents were prepared to investigate the influence of RE on microstructure evolution and mechanical properties through a series of experiments and theoretical *** results indicated that the toal oxygen(T.O) content decreased from 15 ppm to 6 ppm with 0.022 wt% RE addition,which is attributed to the active chemical properties of RE *** test steels,RE additions of 0.012 wt% and 0.022 wt% were significantly effective for refining inclusions by eliminating 11.5% large-sized inclusions with diameter exceeding 10 μm compared with that of ORE *** addition contributed to modify irregular MnS and Al2 O3 inclusions into ellipsoidal RE-inclusions(RE2 O,RES,RE2 O2 S and REAlO3).The purification of molten steel and the modification of inclusions by RE treatment have significant effects on improvement of the fatigue crack growth tests(FCG) inhibition ability and impact energy as well as the ***,excessive addition of RE elements(0.07 wt%)seriously reduced the impact energy,ultimate tensile strength and FCG inhibition ability due to rapidly increase of the volume fraction of large-sized *** addition to the inclusions formed by RE treatment,trace solid solution RE atoms improve the stability of undercooled austenite,resulting in the transformation region of bainite and perlite of 0.07 RE steel shifting to the bottom right and prolonging the incubation period compared with that of ORE steel.

关键词： 718H steel Rare Earth Inclusion evolution Phase transformation Mechanical properties