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仪器仪表用户 2024年第1期31卷 17-18+21页

作者：郑风云叶兵贵州航天电器股份有限公司

限位器又称行程开关，是一种常见的微电流控制设备，其主要功能是当外部力量作用于设备的操作杆时，内部机械结构会驱动接点，从而完成控制电路的接通或切断，以达到预期的操控效果。此开关的触点和触头之间采用弹性连接，这种连接方式... 详细信息

限位器又称行程开关，是一种常见的微电流控制设备，其主要功能是当外部力量作用于设备的操作杆时，内部机械结构会驱动接点，从而完成控制电路的接通或切断，以达到预期的操控效果。此开关的触点和触头之间采用弹性连接，这种连接方式在承受振动、冲击或持续加速等力学作用时会影响触点之间的接触稳定性。由于这一接触机制是微动开关实现电流转换的关键环节，因此，接触稳定性对于开关的性能至关重要。在探讨限位器的耐久性能时，必须深入研究接点系统的自振频率、振动响应幅值特性以及接触力等因素。在动态环境中，这些变量可能表现出非线性变化规律，通过深入研究可以更好地理解限位器在复杂环境下的工作性能，从而为其优化设计和提高耐久性提供理论支持。

关键词：行程开关接触系统力学环境接触可靠性

Geological structure and dynamic mechanism of the Termit rift basin in West African rift system

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Petroleum Exploration and Development 2022年第6期49卷 1339-1350页

作者： WANG Tao YUAN Shengqiang LI Chuanxin MAO Fengjun PANG Sichen JIANG Hong zheng fengyun School of Energy Resources China University of Geosciences(Beijing)Beijing 100083China PetroChina Research Institute of Petroleum Exploration and Development Beijing 100083China

Based on seismic and drilling data in the study area,the geological structure and kinematic process of the Termit rift basin were studied using seismic profile interpretation and balanced restoration to find out the dynamic mechanism of the basin.(1)The geological structure of the Termit Basin is represented as a narrow rift basin,with development of series of structural styles in extensional,extensional strike-slip and compressional stress *** plane,it is narrow in the north and wide in the south,and transitions from graben to half-graben from north to south;it features a graben controlled by the boundary faults in the north and a fault-overlapped half-graben in the south.(2)Before the Cretaceous,a series of hidden faults developed in the West African rift system,which laid the foundation for the development location and distribution direction of the Termit Basin;during the Cretaceous to Paleogene periods,the basin experienced two phases of rifting in Early Cretaceous and Paleogene,which controlled the initial structure and current structural shape of the basin respectively;during the Neogene to Quaternary,the basin was subjected to weak transformation.(3)In the Precambrian,the Pan-African movement gave rise to a narrow and long weak zone within the African plate,which provided the pre-existing structural conditions for the formation of the Termit *** the Early Cretaceous,affected by the South Atlantic rifting,the Pan African weak zone was reactivated,resulting in the first stage of rifting and the basic structural framework of the Termit *** the Paleogene,affected by the subduction and convergence of the Neo-Tethys Ocean,the African-Arabian plate extended in near E-W trending,and the Termit Basin experienced the second stage of *** oblique extension in this period caused intense structural differentiation,and the current structural pattern of alternate uplifts and depressions took shape gradually.

关键词： West African rift system Termit Basin Cretaceous rift basin basin geological structure dynamic mechanism Niger

GABA Signaling Pathway-associated Gene PLCL1 Rare Variants May be Associated with Autism Spectrum Disorders

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Neuroscience Bulletin 2021年第8期37卷 1240-1245页

作者： fengyun zheng Guoyuan Liu Ting Dang Qiaowen Chen Yu An Meng Wu Xiangxuan Kong Zilong Qiu Bai-Lin Wu Institutes of Biomedical Sciences Fudan UniversityShanghai200032China Department of Pathology School of Basic Medical SciencesFudan UniversityShanghai200032China Children’s Hospital of Fudan University Shanghai201102China Boston Children’s Hospital and NGS Collaboration Harvard Medical SchoolBoston02115USA Institute of Neuroscience State Key Laboratory of NeuroscienceCAS Center for Excellence in Brain Science and Intelligence TechnologyChinese Academy of SciencesShanghai200031China The College of Life Science University of the Chinese Academy of SciencesBeijing100049China

Dear Editor,Autism spectrum disorders(ASDs)are neurodevelopmen-tal disorders with phenotypic and genetic heterogeneity,and are among the most heritable of neurodevelopmental disorders[1].Rare single nucleotide variants(SNVs)of genes and/or rare copy number variants(CNVs)involving gene variants and/or genomic imbalances play an important role in ASD,but their molecular pathogenic mechanisms remain indistinct[2].Over the decades,genetic and neurobiological studies mainly involving severe ASD comorbid with intellectual disability(ID)or developmental delay(DD)have indicated that loss of function affects neural development[3].

关键词： Rare ism delay

New understanding and exploration direction of hydrocarbon accumulation in Termit Basin, Niger

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Petroleum Exploration and Development 2023年第2期50卷 268-280页

作者： YUAN Shengqiang DOU Lirong CHENG Dingsheng MAO Fengjun PAN Chunfu zheng fengyun JIANG Hong PANG Wenzhu LI Zaohong PetroChina Research Institute of Petroleum Exploration&Development Beijing 100083China China National Oil and Gas Exploration and Development Corporation Beijing 100034China

Based on the seismic and drilling data, casting thin sections, geochemical analysis of oil and rock samples, and hydrocarbon generation history simulation, the hydrocarbon accumulation characteristics and exploration direction of Termit superimposed marine–continental rift basin are discussed. The Termit basin is superimposed with two-phase rifts(Early Cretaceous and Paleogene). The subsidence curves from two wells on the Trakes slope in the east of the basin show high subsidence rate in the Late Cretaceous, which is believed to be high deposition rate influenced by transgression. However, a weak rift may also be developed. The depositional sequences in the Termit basin were controlled by the Late Cretaceous marine transgression cycle and the Paleogene lacustrine transgression cycle, giving rise to two types of superimposed marine–continental “source-sink” deposits. The marine and continental mixed source rocks developed universally in the whole basinduring the marine transgression period, and are overlaid by the Paleogene Sokor 1 reservoir rocks and Sokor 2 caprocks developed during the lacustrine transgression period, forming the unique superimposed marine–continental basin in WCARS. The early low geothermal gradient in the Termit basin resulted in the late hydrocarbon generated by the source rock of Upper Cretaceous Yogou in Paleogene. Mature source rock of Upper Cretaceous Donga developed in the Trakes slope, so that the double-source-supply hydrocarbon and accumulation models are proposed for the Trakes slope in which formed the oil fields. Due to virtue of the newly proposed hydrocarbon accumulation model and the exploration activities in recent years in the Termit superimposed marine–continental rift basin, an additional effective exploration area of about 2500 km2has been confirmed in the east of the basin. It is believed that potential domains such as Sokor 1, Donga and Upper Cretaceous lithologic traps in the southeast of the basin are key expected targets

关键词： Niger Termit basin superimposed marine-continental rift Upper Cretaceous Donga Formation Paleogene Sokor 1 Formation tectonic evolution source-sink hydrocarbon accumulation exploration direction

Depositional and diageneticcontrols on the reservoirquality of Lower Cretaceous Abu Graba sandstones,Azraq area, Muglad basin, Sudan

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Depositional and diageneticcontrols on the reservoirquality ...

Tencel精梳棉珍珠纤维赛络纺针织纱的开发

第十五届全国古地理学及沉积学学术会议

作者： Liu Jiguo Zhang Guangya Yu Zhaohua zheng fengyun Zhao Ning Nan zhengbing Liu Mingxing Petro China Research Institute of Petroleum Exploration ＆ Development

The reservoirs quality of the Lower Cretaceous Abu Graba Formation of Azraq area, Muglad basin, southwestern Sudan, is directly controlledby depositional facies-related carbonate cementation andcompaction. This study contains a subsurface facies analysis based on description of 190.4 m conventional cores. Methods include wireline logging analysis, petrographic study with thin sections and SEM investigations, grain-size, X-ray diffraction, andheavy minerals analysis of the Abu Gabrasandstone. Sedimentary facies of the well logs and cores indicate lacustrine and deltaic paleo-environment. Subrounded to subangularcoarse to fine-grained, cross-beddedsandstones with fine-grained ripple laminatedshow a sequence of distributary channel fill and channel bars. Petrographically, the sandstones are classified intosubfeldspathic arenitesand feldspathic arenite *** quartz grains are the most abundant detritalcomponents in the samples, followed by Kfeldsparandmica, iron oxides and heavy minerals occur in minor amounts. SEM and XRD analysesshow that kaolinite, smectite,illite and chloriteare the commonclay minerals in the studied samples,while kaolinite is the dominant component（range from 10 to 90%） and followed by smectite（range from 3-28%）. Most of the analyzed sandstones samples are characterized by poor to very good pore interconnectivity. Although porosity ranges from 10% to 32%, the presence of chlorite, carbonate cementation, and quartz overgrowth reduce the porosity of the samples. Pore types are basically primary andsecondary interparticle, with few secondary intraparticle pores due to the dissolution of feldspars and mica. Point, concavo-convex, and few long contactsreflect a medium-higher degree of compaction. In conclusion, the Abu Gabrareservoir quality witnessed porosity loss due to compaction andcementation and was later enhanced by leaching, dissolution of feldspars,micas and cements.

关键词： Diagenesis Abu Gabra sandstone Mugladbasin Sudan

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棉纺织技术 2011年第1期39卷 48-50页

作者：解艳芳鄢芙蓉郑凤云湖北武汉裕大华集团股份有限公司武汉军事经济学院

为了顺利开发Tencel精梳棉珍珠纤维赛络纺针织纱,针对纤维的不同性能,Tencel、珍珠纤维用短流程清梳联分别制条并严格控制相对湿度;而长绒棉在开清棉工序跳过RST型三刺辊开棉机并调整相关工艺;并条工序保证加压稳定;粗纱工序采用较大的... 详细信息

为了顺利开发Tencel精梳棉珍珠纤维赛络纺针织纱,针对纤维的不同性能,Tencel、珍珠纤维用短流程清梳联分别制条并严格控制相对湿度;而长绒棉在开清棉工序跳过RST型三刺辊开棉机并调整相关工艺;并条工序保证加压稳定;粗纱工序采用较大的捻系数和较小的张力;细纱工序采用赛络纺,钢丝圈偏重配置;络筒工序调整解捻管的进出位置及角度,确保捻接质量,最终使Tencel/CJ/珍珠纤维64/20/16 13.7 tex赛络纺针织纱满足了市场需求,提高了产品附加值。

关键词： Tencel 长绒棉珍珠纤维赛络纺纱针织纱温湿度

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浅谈CENTAC离心机的喘振

价值工程 2010年第18期29卷 209-210页

作者：郑凤云大庆中蓝石化有限公司大庆163713

重点讨论离心机的喘振内涵,及其产生的原因并提出相应的解决方法,以及如何在CMC中探测到喘振。

关键词： CENTAC离心机喘振解决方法

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汽车排气系统悬挂点位置的优化改进

中国机械工程 2016年第15期27卷 2107-2111页

作者：黄泽好郑风云姜广志袁光亮重庆理工大学重庆400054

为了探究排气系统更优的挂钩位置,对简化模型进行数值分析及理论研究。首先,对挂钩位置的确定进行理论分析并以某乘用车排气系统为研究对象建立有限元模型;其次,分别用平均驱动自由度方法和改进方法确定挂钩位置;最后,将两种方法确定的... 详细信息

为了探究排气系统更优的挂钩位置,对简化模型进行数值分析及理论研究。首先,对挂钩位置的确定进行理论分析并以某乘用车排气系统为研究对象建立有限元模型;其次,分别用平均驱动自由度方法和改进方法确定挂钩位置;最后,将两种方法确定的挂钩位置分别进行动力响应分析并得出结论。改进方法的计算及建模过程耗时更少,工作效率更高;同时,确定的挂钩位置更准确,使得挂钩的力响应更小,传递到车身的振动和结构噪声更不明显。

关键词：排气系统挂钩位置力响应结构噪声

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温度影响下汽车波纹管疲劳分析

中国机械工程 2016年第12期27卷 1689-1693页

作者：黄泽好姜广志郑风云袁光亮重庆理工大学重庆400054 汽车零部件制造及检测技术教育部重点实验室重庆400054

从汽车波纹管的工作环境出发,充分考虑温度影响下材料的非线性特性,对波纹管进行了疲劳特性分析。首先,根据波纹管疲劳试验要求设置模型中的边界条件;然后从考虑屈服强度变化和不考虑屈服强度变化两种情况对波纹管危险位置的应力进行研... 详细信息

从汽车波纹管的工作环境出发,充分考虑温度影响下材料的非线性特性,对波纹管进行了疲劳特性分析。首先,根据波纹管疲劳试验要求设置模型中的边界条件;然后从考虑屈服强度变化和不考虑屈服强度变化两种情况对波纹管危险位置的应力进行研究,找出温度变化对波纹管应力影响的特点;最后,在应力分析结果的基础上,采用局部应力应变法对波纹管进行疲劳寿命分析,得到不同温度阶段下的波纹管的疲劳寿命,并从中得出温度变化对波纹管疲劳的影响特点。

关键词：波纹管疲劳温度载荷裂纹