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A D-optimal Multi-position Calibration Method for Dynamically Tuned Gyroscopes

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Chinese Journal of Aeronautics 2011年第2期24卷 210-218页

作者： FU Li zhu yongquan WANG Lingling WANG Xinling School of Automation Science and Electrical Engineering Beihang University Beijing 100191 China

This paper presents a novel experimental design to greatly improve the calibration accuracy of the acceleration-insensitive bias and the acceleration-sensitive bias of the dynamically tuned gyroscopes（DTGs）.In order to reduce experimental cost,the D-optimal criteria with constraints are *** turntable positions and the number of test points are chosen to build D-optimal experimental *** D-optimal experimental designs are tested by multi-position calibration experiment for tactical-grade *** results show that,with the same cost,the fit uncertainty is reduced by about 50% by using the D-optimal 8-position experimental procedure,compared to using a defacto standard experimental procedure in ANSI/IEEE Std ***,the new experimental procedure almost achieves optimal accuracy with only 12-position which is half the cost of the widely adopted 24-position experimental procedure for achieving optimal accuracy.

关键词： optimization methods calibration gyroscopes error compensation design for testability

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建筑工程铝合金模板的关键技术研究

中国高新科技 2024年第13期 146-148页

作者：朱永泉王建平潍坊万家灯火置业有限公司山东潍坊261000 潍坊世纪金泉房地产开发有限公司山东潍坊261000

随着社会的发展和经济的增长,以及对建筑施工质量和进度要求的提高,传统模板已经不能满足建筑工程的需要。本文对建筑工程铝合金模板施工的关键技术进行了研究,并详细分析探讨了铝合金板材在建筑工程方面的应用。首先,相比传统木质和钢... 详细信息

随着社会的发展和经济的增长,以及对建筑施工质量和进度要求的提高,传统模板已经不能满足建筑工程的需要。本文对建筑工程铝合金模板施工的关键技术进行了研究,并详细分析探讨了铝合金板材在建筑工程方面的应用。首先,相比传统木质和钢结构模板,仔细研究了铝合金板材具有重量轻、强度高、耐腐蚀等特点,能够满足不同建筑工程的需求。其次,进行了铝合金模板可靠性分析,包括极限状态下载荷施加所产生的强度与刚度。然后,开展了铝合金模板的变形与可靠性分析。此外,还研究了模板拼装和拆除的技术,以及模板连接件的设计和使用。结果表明,合理的模板支撑系统设计和模板板面处理可以有效提高模板施工的质量和速度,减少模板损坏和浪费。

关键词：建筑工程铝合金模板施工关键技术设计研发

Nitrogen isotope stratigraphy of the Early Cambrian successions in the Tarim Basin:Spatial variability of nitrogen cycling and its implication for paleo-oceanic redox conditions

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Acta Geochimica 2024年第4期43卷 785-801页

作者： Bi zhu Xuefeng Li Lu Ge yongquan Chen Institute of Earth’s Critical Zone School of Earth Sciences and EngineeringHohai UniversityNanjing 210098China Research Institute of Exploration and Development Tarim Oil Field CompanyPetroChinaKorlaChina

The Early Cambrian represents a critical time period characterized by extraordinary biological innovations and dynamic redox conditions in *** isotopic signatures of ancient sediments have the potential to elucidate the evolutionary path of marine redox states and the biogeochemical nitrogen cycle within the water column of the Early Cambrian *** existing research on this topic has predominantly focused on South China,the exploration of other continental margins has been limited,leaving contradictory hypotheses *** this study,pairedδ^(15)N andδ^(13)C org analyses were performed on the Lower Cambrian successions from the Shiairike section(inner ramp)and Well Tadong 2(deep shelf/basin)in the northwestern and eastern Tarim Basin,*** data from the Shiairike section reveal a discernible shift in the operation of different nitrogen cycles for the black chert-shale unit,also referred to as the black rock series in Chinese literature,of the Yurtus Formation(Fortunian stage to lower Stage 3).Oscillatingδ^(15)N values for its lower part are suggestive of alternating anaerobic assimilation of NH 4+and denitrification/*** is likely attributed to a shallow,unstable chemocline consistent with the upwelling and incursion of deep,anoxic waters during a major *** contrast,aerobic nitrogen cycling,indicated by positiveδ^(15)N values of>2‰,dominated the upper part alongside a reduction in upwelling *** the other hand,theδ^(15)N signatures of Xishanbulake and Xidashan Formations of Well Tadong 2,which encompass a time interval from the Cambrian Fortunian Age to Age 4,are indicative of N_(2)fixation by diazotrophs as the major nitrogen *** two studied intervals,although not time-equivalent,exhibit separated states of nitrogen cycling at least during the deposition of the Yurtus black rock *** spatially different nitrogen cycling of the studied sections is compatible with a redox-stratified ocean dur

关键词： Nitrogen isotopes Early Cambrian Tarim Black rock series

MSSBAUER INVESTIGATION ON QUENCHED STRUCTURES OF 40CrNiMo STEEL

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Acta Metallurgica Sinica(English Letters) 1989年第8期2卷 138-142页

作者： XU Zuxiong MA Ruzhang zhu yongquan ZHAO Zhongtao FENG Yongrong

The martensite microstructure,amount of retained austenite and its carbon concentration in the 40CrNiMo steel quenched at various conditions have been investigated by using trans- mission Mossbauer spectroscopy at room *** was shown that high-temperature quenching and thermomechanical quenching has little influence on amount of retained austenite,thus the toughening effect of quenching was attributed to bulk lath martensite and its refining.

关键词： 40CrNiMo steel retained austenite Mssbauer spectroseopy

Sorafenib sensitization in tumor therapy by iron overload and AMPK activation

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Nano Research 2024年第7期17卷 6386-6399页

作者： Jun zhu Shoujie Zhao Yejing zhu Shouzheng Ma Tenghui Han Fenghua Xu Huichen Li Bo Wang Zhixiong Guo Da Chen yongquan Qu Zhimin Tian Junlong Zhao Lei Liu State Key Laboratory of Holistic Integrative Management of Gastrointestinal Cancers National Clinical Research Center for Digestive DiseasesXijing HospitalFourth Military Medical UniversityXi’an 710032China Department of General Surgery The Southern Theater Air Force HospitalGuangzhou 510602China Department of General Surgery Tangdu HospitalFourth Military Medical UniversityXi’an 710038China Department of Thoracic Surgery Tangdu HospitalFourth Military Medical UniversityXi’an 710038China Department of Neurology Airborne Army HospitalWuhan 430012China Key Laboratory of Modern Teaching Technology(Ministry of Education) Shaanxi Normal UniversityXi’an 710062China State Key Laboratory of Holistic Integrative Management of Gastrointestinal Cancers Department of Biochemistry and Molecular BiologySchool of Basic MedicineFourth Military Medical UniversityXi’an 710032China Key Laboratory of Special Functional and Smart Polymer Materials of Ministry of Industry and Information Technology School of Chemistry and Chemical EngineeringNorthwestern Polytechnical UniversityXi’an 710072China State Key Laboratory of Holistic Integrative Management of Gastrointestinal Cancers Department of Medical Genetics and Developmental BiologyFourth Military Medical UniversityXi’an 710032China Department of Pediatrics Tangdu HospitalFourth Military Medical UniversityXi’an 710000China

Sorafenib,as a first-line drug for advanced hepatocellular carcinoma(HCC),could trigger ferroptosis by inhibiting cystine/glutamate ***,low-level intracellular iron and insufficient activation of adenosine monophosphate(AMP)-activated protein kinase(AMPK)confer impaired response to *** this study,a unique sorafenib nanocomposite dexterously modified with Fe-Material of Institut Lavoisier(sora@Fe-MIL)was synthesized to escalate intracellular iron level and activate AMPK,further potentiating the ferroptotic effect of ***,this strategic deployment of sora@Fe-MIL triggered an extensive demise of cancer cells,while manifesting negligible deleterious impact on normal *** prominent ferroptosis biomarkers,glutathione peroxidase 4(GPX4)and solute carrier family 7 member 11(SLC7A11),underwent pronounced downregulation,underscoring the efficacy of this strategy in inducing ***,the bioactivity of AMPK was considerably elevated,and its downstream targets were conspicuously inhibited by the treatment with sora@*** orthotopic HCC animal models,we observed a substantial suppression of primary in situ tumor growth,and ribonucleic acid(RNA)sequencing elucidated an elevated degree of ferroptosis and AMPK activation with the treatment of sora@*** conclusion,we proposed that the meticulously designed strategy for secure and efficacious iron release and AMPK activation could significantly potentiate the ferroptotic impact of sorafenib,thus resuscitating its therapeutic response in HCC patients.

关键词： anti-tumor ferroptosis Fe-Material of Institut Lavoisier(Fe-MIL) sorafenib adenosine monophosphate(AMP)-activated protein kinase(AMPK)

区间隧道零距离下穿既有地铁车站施工方案研究

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维普期刊数据库

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现代隧道技术 2013年第6期50卷 124-130页

作者：朱正国余剑涛朱永全石家庄铁道大学土木工程学院石家庄050043 石家庄铁道大学道路与铁道工程安全保障省部共建教育部重点实验室石家庄050043

针对新建区间隧道零距离下穿既有地铁车站的工程特点,为确定设计方案可行性、保证既有车站结构安全及运营正常,文章采用FLAC3D三维快速拉格朗日差分方法分析软件对不同开挖工法及周围地层不同加固范围等施工方案进行了数值模拟,分析了... 详细信息

针对新建区间隧道零距离下穿既有地铁车站的工程特点,为确定设计方案可行性、保证既有车站结构安全及运营正常,文章采用FLAC3D三维快速拉格朗日差分方法分析软件对不同开挖工法及周围地层不同加固范围等施工方案进行了数值模拟,分析了既有车站轨道沉降、结构应力及新建区间隧道周边变形、结构受力特点及规律。研究结果表明,在对区间隧道夹土层、掌子面地层和隧道左右侧3.0 m范围进行注浆加固的前提下,推荐采用CRD法施工方案。

关键词：地铁区间隧道既有地铁车站下穿施工数值模拟注浆加固 CRD法

上海地铁2#线淤泥质地层地铁隧道浅埋暗挖施工技术方案研究

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岩石力学与工程学报 2006年第Z1期25卷 2946-2951页

作者：况勇朱永全贾晓云北京交通大学经济管理学院北京100044 石家庄铁道学院土木工程分院河北石家庄050043

结合上海地铁2#线西延伸工程威宁路站3#出入口通道工程,介绍了在上海含水淤泥质地层条件下,采用管幕超前预支护、掌子面深孔注浆加固、短开挖、强支护等综合浅埋暗挖施工技术。并应用大型有限元软件——ANSYS,采用有限元数值方法对其施... 详细信息

结合上海地铁2#线西延伸工程威宁路站3#出入口通道工程,介绍了在上海含水淤泥质地层条件下,采用管幕超前预支护、掌子面深孔注浆加固、短开挖、强支护等综合浅埋暗挖施工技术。并应用大型有限元软件——ANSYS,采用有限元数值方法对其施工效应进行了计算分析。分析结果表明,施工过程中洞室结构稳定,浅埋暗挖管幕预支护施工方法可行,并可实现洞内施工安全和施工地面沉降的控制要求,解决了明挖施工对城市交通的干扰,所得结果可为后续类似工程提供一定的理论参考。

关键词：隧道工程含水淤泥质地层管幕预支护浅埋暗挖

The study of physical model test under static load for the intersection of No.2 cross duct at Xidan metro station

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The study of physical model test under static load for the i...

鲎试剂用于细菌内毒素检测碳酸氢钠注射液的研究

International Symposium on Application of Computer Methods in Rock Mechnics and Engineering

作者： zhu yongquan Chen Haoxiong & Wu Kangbao Shijiazhuang Railway Institute Shijiazhuang CHINA

＜正＞This paper deals with physical model test under static load for studing the its stress *** model simulates the intersection at Xidan subway station in Beijing which is composed of one construction cross duct with portals labeled No.2 below which there are four other headings of,the main tunnel perpendicular to the cross *** has been shown by the test that it is necessary and feasible to increase the stiffness and load bearing capacity of the structure by building up circle reinforced bar grid in the weak part of the opening part of the *** relibility of the structure has been ***,the important information has been provided for the metro station in design and construction. The procedure and method of modelling structure and reinforcing bar grid have also been introduced in this paper.

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中国药学杂志 1999年第2期34卷 116-118页

作者：赵晓萌杨戒骄朱永泉深圳市人民医院药学部质检室

目的：通过试验以确定碳酸氢钠注射液可用细菌内毒素代替传统的热原检查法。方法：用鲎试剂和家兔做对照试验确定灵敏度。结果：用灵敏度为０１２５ＥＵ·ｍｌ－１的鲎试剂进行内毒素检查比家兔灵敏度高１２倍。结论：细菌内毒素检查... 详细信息

目的：通过试验以确定碳酸氢钠注射液可用细菌内毒素代替传统的热原检查法。方法：用鲎试剂和家兔做对照试验确定灵敏度。结果：用灵敏度为０１２５ＥＵ·ｍｌ－１的鲎试剂进行内毒素检查比家兔灵敏度高１２倍。结论：细菌内毒素检查法可以代替热原检查法。

关键词：碳酸氢钠注射液细菌内毒素鲎试剂