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Reducing the negative effects of flywheel disturbance on space camera image quality using the vibration isolation method

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Frontiers of Optoelectronics 2017年第1期10卷 80-88页

作者： changcheng deng Deqiang MU Junli GUO Peng XIE Institute of Optics Fine Mechanics and Physics Chinese Academy of Sciences Changchun 130033 China University of Chinese Academy of Sciences Beijing 100039 China Changehun University of Technology Changeh-un-130012 China

Although the performance of space cameras has largely improved, the micro vibration from flywheel disturbances still significantly affects the image quality of these cameras. This study adopted a passive isolation method to reduce the negative effect of flywheel disturbance on image quality. A metal-rubber shock absorber was designed and installed in a real satellite. A finite element model of an entire satellite was constructed, and a transient analysis was conducted afterward. The change in the modulate transfer function was detected using ray tracing and optical transfer function formulas. Experiments based on real products were performed to validate the influence of the metal-rubber shock absorber. The experimental results confirmed the simulation results by showing that the negative effects of flywheel dis- turbance on the image quality of space cameras can be diminished significantly using the vibration isolation method.

关键词： micro vibration modulate transfer function,vibration isolation flywheel disturbance

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谈法院执行与和谐社会的重要关系

中国司法 2007年第2期 86-87页

作者：邓长城河南省新乡市中级人民法院执行局河南新乡453000

构建和谐社会就是建立人与人的和谐和人与自然的和谐,是社会公众普遍的向往,也是社会发展的必然要求。人民法院工作制度的和谐在构建和谐社会中起着非常重要的作用,法院执行制度的和谐能促进和谐社会的建立,所以必须大力改革和完善执行... 详细信息

构建和谐社会就是建立人与人的和谐和人与自然的和谐,是社会公众普遍的向往,也是社会发展的必然要求。人民法院工作制度的和谐在构建和谐社会中起着非常重要的作用,法院执行制度的和谐能促进和谐社会的建立,所以必须大力改革和完善执行制度;反过来讲,和谐的社会环境也能保障法院执行工作的长久和谐发展。

关键词：案件法院司法机关

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基于灰色关联度的轴承温度影响因素分析

轴承 2024年第3期 52-57页

作者：邓长城程雪利李辉王蒙蒙马晓杰河南工学院机械工程学院河南新乡453003

为研究角接触球轴承温度的影响因素及其影响程度,对2套7006C角接触球轴承进行了9种工况下的温度测试试验。通过文献跟踪确定影响轴承温度的因素为转速、径向载荷、轴向载荷和填脂量,并计算各因素与轴承温度之间的欧式灰色关联度、模糊... 详细信息

为研究角接触球轴承温度的影响因素及其影响程度,对2套7006C角接触球轴承进行了9种工况下的温度测试试验。通过文献跟踪确定影响轴承温度的因素为转速、径向载荷、轴向载荷和填脂量,并计算各因素与轴承温度之间的欧式灰色关联度、模糊隶属度和模糊灰色关联度,结果表明,各因素对轴承温度影响程度由大到小依次为转速、轴向载荷、径向载荷、填脂量。

关键词：滚动轴承角接触球轴承模糊聚类分析温度载荷转速填脂量

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基于BP神经网络的轴承温度预测

河南工学院学报 2022年第3期30卷 1-6页

作者：邓长城李辉苏金虎马晓杰河南工学院机械工程学院河南新乡453003

针对影响轴承温度的因素如转速、轴向载荷、径向载荷和润滑脂含量等,建立了基于误差回传神经网络(BP网络)的数学模型,分析并采用高速轴承测试台实测了7006C的2套轴承在各种因素影响下的温度,构建了BP网络并预测了轴承的温度。结果表明:B... 详细信息

针对影响轴承温度的因素如转速、轴向载荷、径向载荷和润滑脂含量等,建立了基于误差回传神经网络(BP网络)的数学模型,分析并采用高速轴承测试台实测了7006C的2套轴承在各种因素影响下的温度,构建了BP网络并预测了轴承的温度。结果表明:BP网络预测温度与实际测量温度吻合较好,用BP网络对轴承温度进行预测的方法可行可靠。

关键词： BP神经网络轴承温度

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机械设计制造及其自动化的特点与优势

时代汽车 2021年第11期 158-159页

作者：张小宇邓长城朱可可王惠震石鑫中国人民解放军31620部队江苏省徐州市221004

近年来,我国社会经济、信息科学技术发展迅速,带动了我国机械设计制造行业的高质量发展,有利于提高我国机械制造业的发展潜力,为推进社会经济发展建设提供重要保障。在先进信息科学技术的推动下,将数控技术等信息化手段融入行业的更新... 详细信息

近年来,我国社会经济、信息科学技术发展迅速,带动了我国机械设计制造行业的高质量发展,有利于提高我国机械制造业的发展潜力,为推进社会经济发展建设提供重要保障。在先进信息科学技术的推动下,将数控技术等信息化手段融入行业的更新与高质量发展是必然趋势。本文结合机械设计制造及其自动化发展现状,总结出其发展趋势为:智能化、网络化、虚拟化、电子化。

关键词：机械设计制造及其自动化特点优势发展趋势

First Imported Case of SARS-CoV-2 Omicron Subvariant BA.4-Guangdong Province,China,May 4,2022

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China CDC weekly 2022年第40期4卷 902-903页

作者： Qianfang Guo changcheng Wu Aiping deng Jingtao Liang Xiang Zhao Ruhan A Jiajun Liu Fangzhu Ouyang Jing Xu Shen Huang Yang Song Lirong Zou Xiaoling deng Kai Nie Baisheng Li Guangdong Provincial Center for Disease Control and Prevention Guangzhou CityGuangdong ProvinceChina National Institute for Viral Disease Control and Prevention Chinese Center for Disease Control and PreventionBeijingChina Foshan Center for Disease Control and Prevention Foshan CityGuangdong ProvinceChina

On April 29,2022,a flight arrived at Baiyun International Airport,Guangzhou City,Guangdong Province,and departed from Amsterdam Schiphol Airport,*** the first test of severe acute respiratory syndrome coronavirus 2(SARS-CoV-2)nucleic acid at the Baiyun International Airport,all passengers were admitted to a quarantine hotel for a routine 14-day medical *** April 30,one of the passengers(a 20-year-old Chinese female)was reported positive for coronavirus disease 2019(COVID-19),and then a nasopharyngeal swab sample was immediately retested on May 1 and reported positive.

关键词： admitted Guangdong routine

Vaccinia virus Tiantan strain blocks host antiviral innate immunity and programmed cell death by disrupting gene expression

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Biosafety and Health 2024年第5期6卷 286-297页

作者： changcheng Wu Zhongxian Zhang Zhaoqing Li Ruorui Li Shuting Huo Han Li Roujian Lu Houwen Tian Wenling Wang Li Zhao Baoying Huang Yao deng Wenjie Tan National Key Laboratory of Intelligent Tracking and Forecasting for Infectious Diseases(NITFID) National Institute for Viral Disease Control and PreventionChinese Center for Disease Control and PreventionBeijing 102206China School of Public Health Baotou Medical CollegeBaotou 014040China School of Public Health Xinxiang Medical UniversityXinxiang 453003China

The vaccinia virus Tiantan(VTT)is widely utilized as a smallpox vaccine in China and holds significant impor-tance in the prevention of diseases stemming from poxvirus ***,few studies have investi-gated the influence of VTT infection on host gene *** this study,we constructed time series transcriptomic profiles of HeLa cells infected with both VTT and western reserve(WR)*** observed similar patterns of viral gene expression,while the expression levels of host genes varied between the two *** was an immediate and significant repression of host gene expression,particularly in genes asso-ciated with oxidative ***,genes involved in nerve growth factor(NGF)-stimulated transcription were significantly *** upregulation of genes linked to the ribonucleic acid(RNA)-induced silencing complex(RISC)suggested a potential role for posttranscriptional regulation in the interac-tion between the vaccinia virus and the *** the later stages of infection,pathways such as extracellular matrix organization,neutrophil degranulation,complement and interferon responses,translation,and pro-grammed cell death are largely inhibited.A significant number of host genes exhibit correlations with changes in the expression levels of viral *** host genes that are negatively correlated with viral genes are mainly enriched in pathways associated with translation and the response to viral *** study significantly contributes to advancing our understanding of the dynamics between the vaccinia virus and the host,improv-ing the application of VTTs and facilitating the development of effective vaccines against diseases such as smallpox and monkeypox.

关键词： Vaccinia virus Tiantan strain Ribonucleic acid(RNA)-seq Innate immune Programmed cell death

STUDY ON THE DECOLORIZATION OF D-RIBOSE ZYMOTIC FLUID BY RESIN ADSORPTION

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Chinese Journal of Reactive Polymers 1999年第1期8卷 61-67页

作者： ZHENG changcheng GUO Xianzhi deng Guocai YANG Sihai CHEN Rongti Department of Chemistry Nankai UniversityTianjin 300071

In this paper, effects on of six type of resins the decolorization of D-ribosezymotic fluid have been studied for the fist time. The results show that resinNKA-II has the best effect. the decolorization rate of D-ribose zymotic fluid is91% at velocity of 1.0BV/hr and 25℃, the adsorption capacity can reach up to5.7BV. The effects of adsorption conditions as well as conditions of resinregeneration on the resin decolorization capability were also studied.

关键词： D-ribose Decolorization Resin adsorption

STUDY ON THE SEPARATION OF PENTOSE AND HEXOSE FROM GLUCOSE YEAST WATER

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Chinese Journal of Reactive Polymers 2000年第2期9卷 164-168页

作者： ZHENG changcheng ZHANG Jinfeng LU Yan deng Guocai CHEN Rongti Department of Chemistry Nankai UniversityTianjin 300071P.R China

D-ribose is a unique, 5-carbon sugar that occurs naturally in all living cells. D-ribose has been used as a staring material for preparation of some certain medicines or just as a new nutraceutical that helps the body naturally restore its energy level. The fermentative processes are the best for their relatively simple series of production steps and relatively cheap starting materials. However, because of the many impurities in glucose yeast water and its dark color, pretreatment and purification must be done to the fluid before D-ribose can be separated. In this paper, separation and purification of D-ribose was carried out using cation exchange resins, of which Ca2+ exchange resin had the best effect. The optimal condition for adsorption is a flow velocity of 0.5BV/h at adsorption temperature of 25℃. The optimal condition for desorption is a flow velocity of 0.5 BV/h at desorption temperature of 80℃.

关键词： Glucose yeast water Ion exchange resin Separation