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Spatiotemporal variations of parameters of internal solitary waves in the northern South China Sea

Journal of Oceanology and Limnology 2024年第2期42卷 421-438页

作者： Yu’ang LIU Yifei jiang xiaojiang ZHANG Zhiyuan WANG Yu CAO Huizan WANG College of Meteorology and Oceanography National University of Defense TechnologyChangsha 410000China

The dynamic parameters for internal solitary waves(ISWs)derived from the extended Korteweg-de Vries(eKdV)equation play an important role in the understanding and prediction of ISWs.The spatiotemporal variations of the dynamic parameters of the ISWs in the northern South China Sea(SCS)were studied based on the reanalysis of long-term temperature and salinity datasets.The results for spectrum analysis show that there are definite geographical differences for the periodic variation of the parameters:in shallow water,all parameters vary with a wave period of one year,while in deep water wave components of the parameters at other frequencies exist.Using wavelet analysis,the wavelet power spectral densities in deep water exhibited an inter-annual variation pattern.For example,the wave component of the dispersion coefficient with a wave period of about half a year reached its power peak once every two years.Based on previous work,this inter-annual variation pattern was deduced to be caused by dynamic processes.In further work on the regulatory mechanisms,empirical orthogonal function(EOF)decomposition was performed.It was found that the modes of the dispersion coefficient have different geographical distributions,explaining the reason why the wave components in different frequencies appeared in different locations.The numerical simulation results confirm that the variations in the parameters of the ISWs derived from the eKdV equation could affect the waveforms significantly because of changes in the polarity of the ISWs.Therefore,the periodic variations of the dynamic parameters are related to the geographical location because of dynamic processes operating.

关键词： internal solitary waves(ISWs) dynamic parameters eKdV equation spatiotemporal variation polarity empirical orthogonal function(EOF)decomposition

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Three rare anti-inflammatory sesquiterpene lactones from Magnolia grandiflora

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Chinese Journal of Natural Medicines 2024年第3期22卷 265-272页

作者： XU Shuangyu ZHANG Feng TAO Linlan jiang Yangming HUANG Tao LI Yanan HU Zhanxing YANG Jue HAO xiaojiang YUAN Chunmao State Key Laboratory of Functions and Applications of Medicinal Plants Guizhou Medical UniversityGuiyang 550014China School of Pharmaceutical Sciences Guizhou Medical UniversityGuiyang 550025China Natural Products Research Center of Guizhou Province Guiyang 550014China State Key Laboratory of Phytochemistry and Plant Resources in West China Kunming Institute of BotanyChinese Academy of SciencesKunming 650201China

Four new sesquiterpene lactones(SLs)(1–4),along with a biosynthetically related SL(5),have been isolated from the leaves of Magnolia grandiflora.Magrandate A(1)is notable as the first C18 homogemarane type SL,featuring a unique 1,7-dioxaspiro[4.4]nonan-6-one core.Compounds 2 and 3,representing the first instances of chlorine-substituted gemarane-type SL analogs in natural products,were also identified.The structures of these isolates were elucidated through a combination of spectroscopic data analysis,electronic circular dichroism calculations,and X-ray single-crystal diffraction analysis.All isolates demonstrated anti-inflammatory activity in lipopolysaccharide-stimulated RAW264.7 cells.Notably,3–5 showed a significant inhibitory effect on nitric oxide production,with IC50 values ranging from 0.79 to 4.73μmol·L^(−1).Additionally,4 and 5 exhibited moderate cytotoxic activities against three cancer cell lines,with IC50 values between 3.09 and 11.23μmol·L^(−1).

关键词： Magnolia grandiflora Sesquiterpene lactones Isolation and identification Anti-inflammatory activity

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The impact of mental health and sleep status on people with and without psychiatric illnesses in Chongqing,China during the peak of2019 coronavirus（COVID-19） outbreak with strict quarantine measures

The impact of mental health and sleep status on people with ...

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中国睡眠研究会第七届西部睡眠医学大会

作者：郝凤仪 xiaojiang jiang Wanqiu Tan 重庆两江新区第一人民医院 Department of Neurology Daping HospitalArmy Medical University The China-Singapore (Chongqing) Demonstration Initiative on Strategic Connectivity Think Tank Institute for Health Innovation and Technology(iHealthtech) National University of Singapore

Objectives This study aimed to assess and compare the immediate stress and psychological impact experienced by people with and without psychiatric illnesses during the peak of 2019 coronavirus（COVID-19）outbreak with strict quarantine measures in Chongqing,China.Methods At the peak of COVID-19 outbreak（February 2020）,76 psychiatric patients and 109 people healthy control subjects completed an online survey that collected information on demographic data,physical symptoms in the past 14 days and a range of psychiatric symptoms,the Impact of Event ScaleRevised（IES-R）.Depression,Anxiety and Stress Scale（DASS-21） and Insomnia Severity Index（ISI）.Groups were matched for age and gender.Results The mean IES-R,DASS-21 anxiety,depression and stress subscale and ISI scores were significantly higher in psychiatric patients than in healthy control subjects.Serious worries about own physical health,anger and impulsivity and strong suicidal ideation were significantly higher in psychiatric patients than in healthy control subjects（p＜0.05）.More than one-third of psychiatric patients might suffer from post-traumatic stress disorder（PTSD） and more than one-quarter of psychiatric patients suffer from moderately severe to severe insomnia.Respondents who reported no change,poor or worse physical health status and had psychiatric illness were significantly associated with higher mean IES-R,DASS depression,anxiety and stress subscale scores and ISI scores（p＜0.05）.Conclusion This pioneer study confirmed increased severity of negative psychological impact on psychiatric patients during the peak of COVID-19 outbreak with strict quarantine measures.Understanding the psychological impact on psychiatric patients during the peak of COVID-19 outbreak has the potential to give further insight into how to improve preparedness and contingency plan for continuing psychiatric care.Prompt and continuous psychiatric intervention is needed for psychiatric patients during infectious disease outbreaks.

关键词： anxiety COVID-19 coronavirus depression epidemic insomnia psychiatric illness quarantine PTSD stress suicide

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Returning to Work during the Coronavirus Disease 2019（COVID-19） Epidemic:Immediate Mental Health and Sleep Status of Chinese Workforce after Strict Quarantine Measures in Chongqing,China

Returning to Work during the Coronavirus Disease 2019（COVID...

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中国睡眠研究会第七届西部睡眠医学大会

Background:The uncertainty of coronavirus disease 2019（COVID-19） might lead to fear and perception of occupational risk when returned to work.There has been no research focusing on the mental health of workforce who returned to work during the COVID-19 epidemic.Workers might suffer from posttraumatic stress symptomatology,depression,anxiety,stress and insomnia.Factors affecting mental health of employees who returned to work during the COVID-19 epidemic have not been fully elucidated.The objective of this study was to quantify the immediate psychological effects of a workforce who returned to work during the COVID-19 epidemic after strict quarantine and lockdown.Methods:At the peak of the COVID-19 epidemic,members of the workforce who received the approval to return to work in Chongqing,China was invited to participate in this study.Respondents completed a questionnaire regarding their attitude toward the COVID-19 epidemic and return-to-work along with the Impact of Event Scale-Revised,Depression,Anxiety,Stress Scale-21（DASS-21） and Insomnia Severity Index（ISI）,Results:From 673 valid questionnaires,we found that 10.8% of respondents met the diagnosis of post-traumatic stress disorder（PTSD） after returning to work.The respondents reported a low prevalence of anxiety（3.8%）,depression（3.7%）,stress（1.5%） and insomnia（2.3%） when returning to work during the COVID-19 epidemic.There were no significant differences in the severity of psychiatric symptoms between workers/technicians and executives/managers.More than 95% reported good ventilation in the workplace and wore a face mask as protective measures.Factors that were associated with the severity of psychiatric symptoms in the workforce were the following:marital status such as divorced,separated or widowed,presence of physical symptom and poor physical health,not yet or recently returning to work within a week and viewing return to work as a health hazard.In contrast,personal protection measures including hand hygiene and wearing face masks as well as occupational h

关键词： anxiety COVID-19 coronavirus depression epidemic insomnia occupational health mental health quarantine PTSD stress suicide workers workforce

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面向余热回收的超临界CO_(2)动力循环高级[火用]分析

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西安交通大学学报 2024年第2期58卷 43-55页

作者：姜悦茂王顺森吴杰鹏颜晓江宋立明西安交通大学能源与动力工程学院西安710049

针对常规[火用]分析方法不能揭示部件总[火用]损中那部分是由自身不可逆性造成的以及有多少可以通过优化而避免的问题,对面向余热回收的超临界CO_(2)动力循环进行了高级[火用]分析,找出[火用]损来源,探究部件真实提升潜能。首先,从热力... 详细信息

针对常规[火用]分析方法不能揭示部件总[火用]损中那部分是由自身不可逆性造成的以及有多少可以通过优化而避免的问题,对面向余热回收的超临界CO_(2)动力循环进行了高级[火用]分析,找出[火用]损来源,探究部件真实提升潜能。首先,从热力学、经济与紧凑性3个角度对回热式循环余热回收系统进行了多目标优化,进行了热经济与常规[火用]分析;继而,将每个部件的[火用]损细分为内源可避免、内源不可避免、外源可避免与外源不可避免4部分,进行了高级[火用]分析;最后,比较了常规[火用]与高级[火用]分析结果,揭示了常规[火用]分析方法的局限性。结果表明,经优化后系统净发电量、平准化度电成本与单位功率面积分别为6.24 MW、4.48美分/(kW·h)与0.19 m^(2)/kW;回热器总[火用]损率最高,约为36.7%。由于关键设备技术限制,系统极限[火用]效率相比理想工况低约7%,系统总[火用]损主要由部件自身不可逆性产生,其中有42.9%可通过部件改进而减少。在不同燃机工况下,透平具有最高的内源可避免[火用]损率。

关键词：余热回收超临界CO_(2)动力循环多目标优化热经济分析高级[火用]分析

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矛盾性失眠的发病机制及诊疗

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中华行为医学与脑科学杂志 2020年第8期29卷 677-681页

作者：蒋晓江郝凤仪陆军军医大学大坪医院神经内科重庆400042 重庆两江新区第一人民医院 401120

矛盾性失眠(paradoxical insomnia)是一种常见的临床现象,由于对其发病机制缺乏全面了解,导致诊断标准、治疗效果的差异性较大,从而干扰其流行病学资料的正确统计等。通过对既往研究的总结,结合自身针对慢性失眠症发病机制的研究,提出... 详细信息

矛盾性失眠(paradoxical insomnia)是一种常见的临床现象,由于对其发病机制缺乏全面了解,导致诊断标准、治疗效果的差异性较大,从而干扰其流行病学资料的正确统计等。通过对既往研究的总结,结合自身针对慢性失眠症发病机制的研究,提出了矛盾性失眠的主、客观性评估差异与睡眠启动阶段丘脑-皮层失活非同步以及入睡后各区皮层激活序列、强弱紊乱有关,并根据其相关发病机制进行了诊断分型及临床特征描述,制定了具有针对性的治疗策略。矛盾性失眠是一种具有特殊病理生理机制的失眠类型。

关键词：矛盾性失眠发病机制诊断治疗

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PLC在汽机保护上的应用

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可编程控制器与工厂自动化（PLC FA） 2005年第2期 36-37,45页

作者：姜小将中铝河南分公司总计控室

本文介绍可编程控制器(PLC)在汽轮机保护上的应用,介绍了可编程控制器的基本功能及应用。

关键词：可编程控制器汽机保护 PLC 汽轮机

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县级档案馆档案价值的鉴定

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北京档案 2005年第9期 26-27页

作者：姜晓江罗建军北京市延庆县档案局

档案鉴定的最终目的是根据档案的价值选择存与毁,并对留存文件保管期限予以确定.然而鉴定理论相对滞后,档案从业人员专业素质低,在一定程度上制约了鉴定工作.档案馆不能做到有计划、经常性地开展鉴定工作,直接导致需要鉴定的档案与日俱... 详细信息

档案鉴定的最终目的是根据档案的价值选择存与毁,并对留存文件保管期限予以确定.然而鉴定理论相对滞后,档案从业人员专业素质低,在一定程度上制约了鉴定工作.档案馆不能做到有计划、经常性地开展鉴定工作,直接导致需要鉴定的档案与日俱增.同时,鉴定工作费时费力,难见成效,档案馆也未能将其放到应有的位置,致使鉴定负担越来越重,鉴定程序复杂也使档案价值鉴定工作难上加难,其结果是造成了馆藏档案整体质量下降、档案资源的利用率普遍不高的状况日趋严重.

关键词：县级档案馆档案价值档案鉴定馆藏建设档案质量档案资源

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脑卒中高危人群规范化筛查模式的建立与应用

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重庆医学 2014年第12期43卷 1428-1430页

作者：钟代曲蒋晓江沈盈盈唐嘉第三军医大学大坪医院野战外科研究所神经内科重庆400042

目的建立脑卒中高危人群规范化筛查模式,应用于脑卒中高危人群进行筛查与管理,并评价其初步应用效果。方法该科成立脑卒中筛查管理小组,建立规范化脑卒中筛查模式,在门诊及社区人群中开展脑卒中筛查工作,对筛查出的脑卒中高危人群根据... 详细信息

目的建立脑卒中高危人群规范化筛查模式,应用于脑卒中高危人群进行筛查与管理,并评价其初步应用效果。方法该科成立脑卒中筛查管理小组,建立规范化脑卒中筛查模式,在门诊及社区人群中开展脑卒中筛查工作,对筛查出的脑卒中高危人群根据脑卒中筛查与干预指南实施为期1年的管控。结果共筛查高危人群9 631例,筛查出高危患者1 786例,高危患者率为18.55%。对高危患者存在的高危因素实施干预,干预前、后高危患者血糖、血压、血脂、肥胖指数、吸烟、体育锻炼、合理饮食等比较,差异有统计学意义(P<0.05)。结论建立脑卒中规范化筛查模式,对脑卒中高危人群进行专项管理是做好脑卒中筛查与管控工作的重要保障,可降低脑卒中高危人群的危险因素。

关键词：卒中多相筛查干预性研究人群监测危险因素

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湖北省郧县青木沟钒矿床地质特征及其成因分析

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矿产与地质 2016年第5期30卷 774-777页

作者：姜骁疆王素爽河南省有色金属地质矿产局第三地质大队河南郑州450016

文章简要介绍了湖北省郧县青木沟钒矿床矿区地质背景,通过对该矿床矿体特征、矿石组构、矿石类型、矿石成分等进行分析总结,较具体地讨论了钒矿床地质特征及其成因;从本区古地理环境、矿物共生组合和元素赋存特征分析,认为该矿床属于生... 详细信息

文章简要介绍了湖北省郧县青木沟钒矿床矿区地质背景,通过对该矿床矿体特征、矿石组构、矿石类型、矿石成分等进行分析总结,较具体地讨论了钒矿床地质特征及其成因;从本区古地理环境、矿物共生组合和元素赋存特征分析,认为该矿床属于生物化学沉积变质改造型钒矿床。

关键词：钒矿地质特征矿床成因青木沟湖北

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