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Journal of Rare Earths 2021年第3期39卷 331-339,I0004页

作者： Ran Sui Qiaoli Lin Le Wang Fan Yang Department of Materials Science and Engineering Lanzhou Institute of TechnologyLanzhou 730050China State Key Laboratory of Advanced Processing and Recycling of Non-ferrous Metal Lanzhou University of TechnologyLanzhou 730050China

A series of experiments were conducted to investigate the wettability of graphite plate,graphite paper,NWCNTs Buckypaper,CVD-diamond by molten Ce and graphite plate by Cu-Ce binary alloy using a modified sessile drop ... 详细信息

关键词： Wettability MMCs Rare earth Brazing

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催化燃烧过程中的气相火焰

工程热物理学报 2024年第5期45卷 1534-1547页

作者：隋然清华大学能源与动力工程系、燃烧能源中心北京100084

催化燃烧技术的工业应用涵盖了我国“十四五”规划和2035远景目标纲要中指定的若干未来战略性产业,因此具有重要的科学和战略意义。在许多催化燃烧的应用场景中,气相火焰被点燃并与催化反应路径发生错综复杂的耦合关系。本文回顾了近年... 详细信息

催化燃烧技术的工业应用涵盖了我国“十四五”规划和2035远景目标纲要中指定的若干未来战略性产业,因此具有重要的科学和战略意义。在许多催化燃烧的应用场景中,气相火焰被点燃并与催化反应路径发生错综复杂的耦合关系。本文回顾了近年来贵金属催化通道内预混层流火焰的最新研究进展,简要梳理了催化通道内催化气相燃烧的控制方程、数值模型、点火和传递条件,以及氢气、合成气、甲烷、丙烷、正癸烷等重要燃料在铂、铑、钯等催化通道内的贫燃和富燃燃烧时的火焰形态和特性,尤其是化学、流动和传热传质等方面的决定因素。

关键词：催化燃烧催化-气相耦合燃烧微尺度燃烧气-固耦合贵金属催化

Image motion and experimental study of a 0.1″space pointing measuring instrument for micro-vibration conditions

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Chinese Journal of Aeronautics 2023年第2期36卷 191-200页

作者： Lin LI Li YUAN Li WANG Miaomiao WANG Xiaoxue GONG Jie sui Yanpeng WU ran ZHENG Space Optoelectronic Measurement and Perception Lab. Beijing Institute of Control EngineeringBeijing 100190China China Academy of Space Technology Beijing 100094China Science and Technology on Space Intelligent Control Laboratory Beijing 100094China University of Chinese Academy of Sciences Beijing 100049China Changchun Institute of Optics Fine Mechanics and PhysicsChinese Academy of SciencesChangchun 130033China Chang Guang Satellite Technology Co. Ltd.Changchun130102China

There exists an increasing need for Milli-Arc-Seconds(MAS)accuracy pointing measurement for current and future space systems.To meet the 0.1″space pointing measurement accuracy requirements of spacecraft in future,the influence of spacecraft micro-vibration on a 0.1″Space Pointing Measuring Instrument(SPMI)is studied.A Quasi-Zero Stiffness Device(QZSD)with adaptive adjustment and variable stroke was proposed.Then,a series of micro-vibration experiments of the SPMI were carried out.The influence of the micro-vibration generated by Guidance Navigation Control(GNC)attitude control components under different attitudes on the SPMI was analyzed.Point spread function of image motion in micro-vibration was also derived.Further,the changes of image motion under the micro-vibration environment were evaluated by extracting the gray centroid of the images,and the experiment processes and results are deeply discussed.The results show that the firstorder frequency of the QZSD system is 0.114 Hz,and it is induced by a double pendulum system;the image motion of single flywheel spinning reached 0.015 pixels;whilst the image motion reached 0.03 pixels when three flywheels are combined spinning.These latest findings provide a beneficial theoretical and technical support for the development of spacecraft with 0·1″pointing accuracy.

关键词： Image motion Micro-vibration Milli-arc-seconds Quasi-zero stiffness device Space pointing measuring instrument

Alerting effects of light in healthy individuals: a systematic review and meta-analysis

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Neural Regeneration Research 2022年第9期17卷 1929-1936页

作者： Yi-Man Mu Xiao-Dan Huang sui Zhu Zheng-Fang Hu Kwok-Fai So Chao-ran Ren Qian Tao Department of Public Health and Preventive Medicine School of Basic MedicineJinan UniversityGuangzhouGuangdong ProvinceChina Division of Medical Psychology and Behavior Science School of Basic MedicineJinan UniversityGuangzhouGuangdong ProvinceChina Guangdong-Hongkong-Macao Institute of CNS Regeneration Ministry of Education CNS Regeneration Collaborative Joint LaboratoryJinan UniversityGuangzhouGuangdong ProvinceChina Guangzhou Regenerative Medicine and Health Guangdong Laboratory GuangzhouGuangdong ProvinceChina Center for Brain Science and Brain-Inspired Intelligence Guangdong-Hong Kong-Macao Greater Bay AreaGuangzhouGuangdong ProvinceChina Neuroscience and Neurorehabilitation Institute University of Health and Rehabilitation ScienceQingdaoShandong ProvinceChina Co-innovation Center of Neuroregeneration Nantong UniversityNantongJiangsu ProvinceChina

Light plays an essential role in psychobiological and psychophysiological processes,such as alertness.The alerting effect is influenced by light characteristics and the timing of interventions.This meta-analysis is the first to systematically review the effect of light intervention on alertness and to discuss the optimal protocol for light intervention.In this meta-analysis,registered at PROSPERO(Registration ID:CRD42020181485),we conducted a systematic search of the Web of Science,PubMed,and PsycINFO databases for studies published in English prior to August 2021.The outcomes included both subjective and objective alertness.Subgroup analyses considered a variety of factors,such as wavelength,correlated color temperature(CCT),light illuminance,and timing of interventions(daytime,night-time,or all day).Twenty-seven crossover studies and two parallel-group studies were included in this meta-analysis,with a total of 1210 healthy participants(636(52%)male,mean age 25.62 years).The results revealed that light intervention had a positive effect on both subjective alertness(standardized mean difference(SMD)=-0.28,95%confidence interval(CI):-0.49 to-0.06,P=0.01)and objective alertness in healthy subjects(SMD=-0.34,95%CI:-0.68 to-0.01,P=0.04).The subgroup analysis revealed that cold light was better than warm light in improving subjective alertness(SMD=-0.37,95%CI:-0.65 to-0.10,P=0.007,I2=26%)and objective alertness(SMD=-0.36,95%CI:-0.66 to-0.07,P=0.02,I2=0).Both daytime(SMD=-0.22,95%CI:-0.37 to-0.07,P=0.005,I2=74%)and night-time(SMD=-0.32,95%CI:-0.61 to-0.02,P=0.04,I2=0)light exposure improved subjective alertness.The results of this meta-analysis and systematic review indicate that light exposure is associated with significant improvement in subjective and objective alertness.In addition,light exposure with a higher CCT was more effective in improving alertness than light exposure with a lower CCT.Our results also suggest that both daytime and night-time light exposure can improve subjective alertness.

关键词： correlated color temperature illuminance light meta-analysis objective alertness subjective alertness time of light intervention wavelength

Ear ischemia induced by endovascular therapy for arteriovenous fistula of the sigmoid sinus: A case report

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World Journal of Clinical Cases 2021年第36期9卷 11443-11447页

作者： Wei Li sui-sui Zhang Xiao-ran Gao You-Xiang Li Hui-Jian Ge Beijing Neurosurgical Institute Capital Medical UniversityBeijing 100070China Department of Neurosurgery The Second Affiliated Hospital of Xingtai Medical CollegeXingtai 054000Hebei ProvinceChina

BACKGROUND Arteriovenous fistula of the sigmoid sinus is an abnormal connection of arteries with the sigmoid sinus.Endovascular treatments of such lesions are considered safe and with low rates of complications.CASE SUMMARY A 62-year-old female patient underwent endovascular treatment of an arteriovenous fistula of the right sigmoid sinus on February 7,2017,but her tinnitus was not cured.She was admitted to the Beijing Tiantan Hospital,Capital Medical University,on March 20,2017,and her pre-operative diagnosis,by digital subtraction cerebral angiography,was arteriovenous fistula of the sigmoid sinus.She underwent endovascular embolization of the distal occipital artery and posterior auricular artery using Onyx-18.The arteriovenous fistula of the sigmoid sinus was cured,and her tinnitus disappeared,but ischemia of the upper 2/3 of the right auricle occurred without hearing loss.The patient received treatment to improve microcirculation,in addition to fluid supplementation,analgesia,and hyperbaric oxygen,and the swelling due to ischemia in the right auricle did not progress further.The patient reported no tinnitus,and the right auricle had returned to normal 3 years later.CONCLUSION Ischemic complications of vital organs should be considered when performing embolization procedures for arteriovenous fistulas of cerebral sinuses.Compensation of the organs should be evaluated before the operation,and the related treatment regimens should be planned.

关键词： Arteriovenous fistula Sigmoid sinus Posterior auricular artery Endovascular treatment Tinnitus Case report

SnAgCu-xTi在单晶硅表面的润湿行为

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焊接学报 2020年第4期41卷 90-96,I0010页

作者：隋然林巧力兰州工业学院兰州730050 兰州理工大学省部共建有色金属先进加工与再利用国家重点实验室兰州730050

采用改良座滴法在高真空条件下研究了熔融Sn0.3Ag0.7Cu(SAC)-xTi(x为质量分数,%)在800~900℃与单晶硅表面的润湿行为.结果表明,SAC-xTi/Si体系属于惰性润湿体系,钛的添加显著改善了润湿性.在不添加钛时,SAC钎料在800℃与单晶硅润湿1 80... 详细信息

采用改良座滴法在高真空条件下研究了熔融Sn0.3Ag0.7Cu(SAC)-xTi(x为质量分数,%)在800~900℃与单晶硅表面的润湿行为.结果表明,SAC-xTi/Si体系属于惰性润湿体系,钛的添加显著改善了润湿性.在不添加钛时,SAC钎料在800℃与单晶硅润湿1 800 s后达到平衡,平衡接触角为63°;SAC-1Ti钎料在900℃润湿1 800 s后获得最小平衡接触角41°;SAC-3Ti钎料在900℃时达到平衡润湿的时间最短,仅为50 s,平衡接触角为48°.润湿机制为钛加速了单晶硅表面氧化膜的去除.在熔融钎料的铺展过程中,通过溶解-再析出机制和微掩膜机制,在固/液界面处形成了温度依赖的"金字塔"结构,温度越高,"金字塔"结构越稀疏且形貌越大."金字塔"结构的出现并未改善体系的润湿性,由于其对三相线的钉扎作用,进而使得体系的润湿性变差.

关键词：润湿性表面绒化惰性界面连接

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网络空间安全与人工智能研究综述

信息工程大学学报 2021年第5期22卷 584-589页

作者：隋然军委后勤保障部办公厅北京100089

网络空间安全与人工智能间存在广泛的研究结合点。一方面,人工智能技术成为网络空间安全技术难题的重要解决手段,越来越多的研究基于人工智能去构建恶意代码分类、入侵检测以及网络态势感知的智能模型。另一方面,人工智能技术本身具有... 详细信息

网络空间安全与人工智能间存在广泛的研究结合点。一方面,人工智能技术成为网络空间安全技术难题的重要解决手段,越来越多的研究基于人工智能去构建恶意代码分类、入侵检测以及网络态势感知的智能模型。另一方面,人工智能技术本身具有一定脆弱性,带来诸如对抗样本攻击等新的漏洞。人工智能模型需要先进的网络安全防御技术来抵御对抗性机器学习攻击,保护机器学习中的隐私数据,构建安全的联合学习模型。综述了网络空间安全与人工智能研究的契合点。首先,总结了在使用人工智能对抗网络攻击方面的现有研究成果,包括采用传统的机器学习方法和现有的深度学习解决方案。然后,分析了人工智能模型自身可能遭受的攻击,并对相应的防御方法进行了分类。

关键词：网络空间安全人工智能网络攻防入侵检测

冷金属过渡条件下4043铝合金分别在镀锌钢和镀锡钢表面的润湿行为

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材料导报 2022年第15期36卷 118-122页

作者：隋然刘禄林巧力兰州工业学院材料工程学院兰州730050 兰州理工大学省部共建有色金属先进加工与再利用国家重点实验室兰州730050

在铝/钢冷金属过渡熔钎焊连接中,钢表面的金属镀层是保证铝-钢润湿的关键。在冷金属过渡条件下,本工作对比研究了4043铝合金在镀锌钢和镀锡钢的润湿行为。当钢表面存在低熔点的金属镀层时,改善它们之间的润湿性至少涉及两个方面:(1)通... 详细信息

在铝/钢冷金属过渡熔钎焊连接中,钢表面的金属镀层是保证铝-钢润湿的关键。在冷金属过渡条件下,本工作对比研究了4043铝合金在镀锌钢和镀锡钢的润湿行为。当钢表面存在低熔点的金属镀层时,改善它们之间的润湿性至少涉及两个方面:(1)通过暴露具有较高表面能的表面增加固体的表面能;(2)通过将金属镀层合金化减小液体的表面张力。锌镀层的作用是通过锌的挥发降低界面热量(至少耗散5.1%的热量),从而控制金属间化合物层的厚度。在低热输入条件下,锡镀层的作用是使体系具有更好的润湿性。

关键词：润湿性连接钎焊冷金属过渡(CMT)

The generalized method for estimating reserves of shale gas and coalbed methane reservoirs based on material balance equation

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Petroleum Science 2022年第6期19卷 2867-2878页

作者： Jun-Tai Shi Yan-ran Jia Long-Long Zhang Chang-Jiang Ji Guo-Fu Li Xian-Yue Xiong Hong-Xing Huang Xiang-Fang Li sui-An Zhang State Key Laboratory of Petroleum Resources and Prospecting in China University of Petroleum(Beijing) Beijing102249China Coalbed Methane Research Center China University of Petroleum(Beijing)Beijing102249China State Key Laboratory of Coal and CBM Co-Mining in Nancun Town Jincheng048012ShanxiChina Petro China Coalbed Methane Company Limited Beijing100028China China United Coalbed Methane National Engineering Research Center Co.Ltd Beijing100095China

As the main unconventional natural gas reservoirs,shale gas reservoirs and coalbed methane(CBM)reservoirs belong to adsorptive gas reservoirs,i.e.,gas reservoirs containing adsorbed gas.Shale gas and CBM reservoirs usually have the characteristics of rich adsorbed gas and obvious dynamic changes of porosity and permeability.A generalized material balance equation and the corresponding reserve evaluation method considering all the mechanisms for both shale gas reservoirs and CBM reservoirs are necessary.In this work,a generalized material balance equation(GMBE)considering the effects of critical desorption pressure,stress sensitivity,matrix shrinkage,water production,water influx,and solubility of natural gas in water is established.Then,by converting the GMBE to a linear relationship between two parameter groups related with known formation/fluid properties and dynamic performance data,the straight-line reserve evaluation method is proposed.By using the slope and the y-intercept of this straight line,the original adsorbed gas in place(OAGIP),original free gas in place(OFGIP),original dissolved gas in place(ODGIP),and the original gas in place(OGIP)can be quickly calculated.Third,two validation cases for shale gas reservoir and CBM reservoir are conducted using commercial reservoir simulator and the coalbed methane dynamic performance analysis software,respectively.Finally,two field studies in the Fuling shale gas field and the Baode CBM field are presented.Results show that the GMBE and the corresponding straight-line reserve evaluation method are rational,accurate,and effective for both shale gas reservoirs and CBM reservoirs.More detailed information about reserves of shale gas and CBM reservoirs can be clarified,and only the straight-line fitting approach is used to determine all kinds of reserves without iteration,proving that the proposed method has great advantages compared with other current methods.

关键词： Shale gas Coalbed methane Material balance equation Reserve evaluation Dissolved gas Generalized method

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自然语言语义结构问题的哲学分析

外语学刊 2008年第6期 1-6页

作者：隋然首都师范大学北京100037

在语言意义研究的历史过程中,分别出现了"意义是世界"、"意义是事实"、"意义是事物"和"意义是用法"等不同定义,并与不同的语言哲学思想对应。人类语言意识系统直接涉及言语交际系统,表现为"事物-(潜在)主体-普遍特征-(潜在)述谓"形式的... 详细信息

在语言意义研究的历史过程中,分别出现了"意义是世界"、"意义是事实"、"意义是事物"和"意义是用法"等不同定义,并与不同的语言哲学思想对应。人类语言意识系统直接涉及言语交际系统,表现为"事物-(潜在)主体-普遍特征-(潜在)述谓"形式的"主体-述谓"结构。语句的基础是现实时间的单向线性轴,其深层的离散性语义必然表现出一定的相关形式。语言思维系统和言语交际系统归根结蒂是言语主体意向生成的结果,一方面具有稳定性和目的性,另一方面具有机动性和灵活性。

关键词：语言与意义主体与述谓事物与特征