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2008―2018年北京城区某体检人群膳食多样化和膳食质量变化趋势

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中华疾病控制杂志 2024年第3期28卷 316-322页

作者：史洪静陈媛媛吕筠孙点剑一满塞丽麦王晓娜李立明王波余灿清北京大学公共卫生学院流行病与卫生统计学系重大疾病流行病学教育部重点实验室北京100191 北京大学医学部美年公众健康研究院北京100191 北京大学公众健康与重大疫情防控战略研究中心北京100191 北京美兆健康体检中心北京100191

目的了解2008―2018年北京城区某体检人群膳食多样化及膳食质量变化趋势。方法选择2008―2018年在北京某体检中心完成体检问卷的北京城区居民为研究对象,利用半定量食物频率问卷计算主要食物组每日摄入量,根据2010年全国人口普查数据中... 详细信息

目的了解2008―2018年北京城区某体检人群膳食多样化及膳食质量变化趋势。方法选择2008―2018年在北京某体检中心完成体检问卷的北京城区居民为研究对象,利用半定量食物频率问卷计算主要食物组每日摄入量,根据2010年全国人口普查数据中北京市≥20岁城市居民性别和年龄构成对膳食多样化评分-9分类(diet diversity score-9 classification,DDS9)和中国膳食平衡指数(Chinese diet balance index,DBI_16)的得分和指标百分率标准化,采用Meta回归分析探究变化趋势。结果共纳入224178人次,标准化后DDS9得分11年间增加0.2分,达标率从5.1%增至7.4%(P0.05)。结论2008―2018年北京市城区居民膳食摄入不足的问题有所改善,膳食摄入过量的问题逐年加重,膳食多样化状况不佳。应采取干预措施指导居民理解膳食多样化、促进居民膳食均衡、提高膳食质量。

关键词：膳食质量膳食多样化长期变化趋势

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中国某健康体检人群痔的流行病学特征

北京大学学报（医学版） 2024年第5期56卷 815-819页

作者：郭呈华车晓玉林芝蔡珊刘国臻潘烺吕筠李立明满塞丽麦王波余灿清北京大学公共卫生学院流行病与卫生统计学系北京100191 北京大学数据研究院北大医信健康医疗大数据实验室北京100080 北京大学公众健康与重大疫情防控战略研究中心北京100191 重大疾病流行病学教育部重点实验室(北京大学) 北京100191 北京大学医学部美年公众健康研究院北京100191

目的:分析我国某健康体检人群中痔的分布特点,为痔的精准预防和早期干预提供依据。方法:选取2018年在某全国连锁的体检中心接受健康检查的18岁以上受试者作为研究对象,进行横断面调查研究,采用Logistic回归分析受试者的一般资料及直肠... 详细信息

目的:分析我国某健康体检人群中痔的分布特点,为痔的精准预防和早期干预提供依据。方法:选取2018年在某全国连锁的体检中心接受健康检查的18岁以上受试者作为研究对象,进行横断面调查研究,采用Logistic回归分析受试者的一般资料及直肠检查结果,描述痔的地区和人群分布特征。以2010年第6次人口普查作为标准人口,对年龄和地区进行直接标化,报告分为性别、年龄组的痔标化检出率。结果:共纳入2 940 295名健康体检者,平均年龄(41.7±14.0)岁,其中女性占52.6%。在全年龄组人群中,男、女性痔的标化检出率分别为17.7%和43.7%(P<0.001)。从年龄分布来看,女性痔标化检出率呈倒U型,30~39岁年龄组的痔标化检出率最高(63.5%);男性痔标化检出率随年龄增加,以50~59岁年龄组最高(17.2%),60岁及以上年龄组检出率略有降低(趋势检验P<0.001)。此外,男性痔标化检出率随体重指数升高呈上升趋势(趋势检验P<0.001),高血压人群痔标化检出率在男性和女性中均显著高于正常血压人群(P<0.001)。结论:我国成人痔检出率与性别、年龄、肥胖及高血压等因素密切相关,但本研究基于体检人群开展,结论外推到一般人群时需慎重;识别出痔患病的高危人群和危险因素,有针对性地开展健康宣教工作和早期筛查,可以减少痔的发生,提升我国居民生活质量和健康水平。

关键词：痔健康检查检出率

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幽门螺杆菌感染与代谢综合征的横断面研究

中华疾病控制杂志 2024年第3期28卷 339-344页

作者：陈媛媛胡志强胡景岑吴雅娴马铮吕筠孙点剑一满塞丽麦王晓娜王波余灿清李立明北京大学公共卫生学院流行病与卫生统计学系北京100191 北京大学肿瘤医院暨北京市肿瘤防治研究所流行病学研究室恶性肿瘤发病机制及转化研究教育部重点实验室北京100142 北京大学公众健康与重大疫情防控战略研究中心北京100191 重大疾病流行病学教育部重点实验室(北京大学) 北京100191 北京大学医学部美年公众健康研究院北京100191 中关村美年健康产业研究院北京100191 北京美兆健康体检中心北京100006

目的探究幽门螺杆菌感染与代谢综合征(metabolic syndrome,MetS)的横断面关联,为早期预防提供参考依据。方法利用北京美兆健康体检中心2009―2020年年龄≥18岁人群的体检资料,其中幽门螺杆菌感染情况由13C-尿素呼气试验检测,代谢综合征... 详细信息

目的探究幽门螺杆菌感染与代谢综合征(metabolic syndrome,MetS)的横断面关联,为早期预防提供参考依据。方法利用北京美兆健康体检中心2009―2020年年龄≥18岁人群的体检资料,其中幽门螺杆菌感染情况由13C-尿素呼气试验检测,代谢综合征及其4个组成部分(腹型肥胖、高血糖、血压升高和血脂异常)的诊断参照《中国成人血脂异常防治指南》的定义,采取横断面调查设计,应用多变量logistic回归分析模型探究幽门螺杆菌感染与MetS及其4个组成部分的关联。结果共纳入31369名体检对象,年龄为(45.3±11.6)岁,其中男性占58.7%。幽门螺杆菌阳性检出率为35.7%,MetS患病率为25.6%,其中男性MetS患病率高于女性。在调整了社会人口学、生活方式、高血压和糖尿病家族史等潜在混杂因素后,幽门螺杆菌感染者患代谢综合征(OR=1.18,95%CI:1.11~1.25,P<0.001)及其4个组分的风险更高,其中腹型肥胖(OR=1.18,95%CI:1.11~1.24,P<0.001)、血脂异常(OR=1.14,95%CI:1.06~1.22,P<0.001)的关联强度较高,且女性中血脂异常的关联强度高于男性(P=0.003)。结论我国成人幽门螺杆菌感染与高MetS及其组成部分的患病风险有关。

关键词：幽门螺杆菌代谢综合征横断面研究

Optimizing mechanical properties of HIPS fabricated with low-cost desktop 3D printers:investigating the impact of process parameters

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Advances in manufacturing 2024年第2期12卷 379-395页

作者： Jin-Ting Xu Guang-Wei Zhang man-man Chen School of Automotive Engineering Dalian University of TechnologyDalian116024People’s Republic of China

Recently,low-cost desktop three-dimensional(3D)printers,employing the fused deposition modeling(FDM)technique,have gained widespread ***,most users cannot test the strength of printed parts,and little information is available about the mechanical properties of printed high-impact polystyrene(HIPS)parts using desktop 3D *** this study,the user-adjustable parameters of desktop 3D printers,such as crisscross raster orientation,layer thickness,and infill density,were *** experimental plans were designed using the Box-Behnken method,and tensile,3-point bending,and compression tests were carried out to determine the mechanical responses of the printed *** prediction models of the process parameters were regressed to produce the optimal combination of process *** experimental results showcase that the crisscross raster orientation has significant effects on the flexural and compression strengths,but not on the tensile *** an increase in the layer thickness,the tensile,flexural,and compression strengths first decreased and then increased,reaching their minimum values at approximately 0.16 mm layer *** addition,they all increased with an increase of infill *** was demonstrated that when the raster orientation,layer thickness,and infill density were 13.08°/–76.92°,0.09 mm,and 80%,respectively,the comprehensive mechanical properties of the printed HIPS were *** results can help end-users of desktop 3D printers understand the effects of process parameters on the mechanical properties,and offer practical suggestions for setting proper printing parameters for fabricating HIPS parts.

关键词： Desktop three-dimensional(3D)printers Fused deposition modeling(FDM) High-impact polystyrene(HIPS) Process parameters

Improved mass relations of mirror nuclei

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Nuclear Science and Techniques 2024年第9期35卷 178-185页

作者： Cheng Xu man Bao Department of Physics University of Shanghai for Science and TechnologyShanghai 200093China

In this study,we revisit the previous mass relations of mirror nuclei by considering 1/N-and 1/Z-dependent terms and the shell effect across a *** root-mean-squared deviation is 66 keV for 116 nuclei with neutron number N≥10,as com-pared with experimental data compiled in the AME2020 *** predicted mass excesses of 173 proton-rich nuclei,including 98 unknown nuclei,are tabulated in the Supplemental Material herein with competitive accuracy.

关键词： Nuclear mass Mirror nuclei Proton-rich nuclei

Influence of the Acoustic Liner in Large Eddy Simulation of Longitudinal Thermoacoustic Instability in a Model Annular Combustor

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Journal of Thermal Science 2024年第2期33卷 710-724页

作者： MENG Sheng ZHANG man GAO Yi AECC Commercial Aircraft Engine Co. Ltd.Shanghai200241China School of Aeronautics and Astronautics Shanghai Jiao Tong UniversityShanghai200240China

Although extensive efforts have been made to dampen the thermoacoustic instability,successfully controlling the pressure oscillations in modern gas turbines or aeroengines remains *** influence of the acoustic liner on the longitudinal thermoacoustic mode in a model annular combustor is investigated by Large Eddy Simulation(LES) in this *** result of the self-excited longitudinal thermoacoustic instability without the liner agrees well with the frequency and acoustic analysis of the pressure mode based on experimental *** different bias flow velocities of the liner located downstream of the combustor are then *** results reveal that the existence of the liner influences not only the acoustic field but also the flow *** the bias velocity is large,it leads to intense turbulence-induced fluctuations,and the pressure oscillation is modulated *** shows that the weak coupling between flow and pressure oscillations plays a significant role in the onset of the intermittency of a thermoacoustic *** on the dynamic analysis of the thermoacoustic system with the acoustic liner,this intermittency is caused by the influence of the flow field on the flame-acoustic ***,a low-order modeling method based on Van der Pol(VdP) oscillator with additive stochastic forcing is conducted to reproduce the evolving dynamics of the thermoacoustic *** the numerical cases demonstrated in this work are relatively simpler than those in a practical combustion system,the results are helpful for us to understand the effect of the acoustic liner and show the attractive potential to apply this device to suppress thermoacoustic instability.

关键词： thermoacoustic instability acoustic liner Large Eddy Simulation low-order modeling

Bioinspired strategies for biomimetic actuators from ultrafast to ultraslow

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Nano Research 2024年第2期17卷 570-586页

作者： man Yang Feilong Zhang Shutao Wang CAS Key Laboratory of Bio-inspired Materials and Interfacial Science CAS Center for Excellence in NanoscienceTechnical Institute of Physics and ChemistryChinese Academy of SciencesBeijing 100190China School of Future Technology University of Chinese Academy of SciencesBeijing 100049China

Motile plant tissues can control their configurations and regulate their motion speed according to their specific requirements,which offer various protypes for biomimetic actuators with controlled motion *** this perspective,we focus on the speed control of plant tissues and the bioinspired strategies for speed regulation of artificial *** begin with a summary to the strategies and mechanisms of motile plant tissues for controlling motion speed,ranging from ultrafast to *** then exemplify the models for fabricating bioinspired artificial actuators and briefly discuss current application scenarios of actuators with varying speeds from ultrafast to ***,we propose potential strategies for the speed regulation of actuators.

关键词： biomimetic actuator motile plant speed regulation ultrafast ultraslow

Recurrent malignant hyperthermia after scoliosis correction surgery

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World Journal of Emergency Medicine 2024年第1期15卷 70-72页

作者： Junfeng Su man Huang Department of General Intensive Care Unit the Second Affi liated Hospital of Zhejiang University School of MedicineHangzhou 310052China Key Laboratory of Early Warning and Intervention of Multiple Organ Failure Ministry of Education of the People's Republic of ChinaHangzhou 310052China

Malignant hyperthermia(MH)is a genetic disorder of skeletal muscle cells that affects muscle cytoplasmic calcium homeostasis,with high mortality and low ***,it presents with non-specific signs of a hypermetabolic response,including high fever,tachycardia,and elevated end-tidal carbon dioxide(ETCO_(2)).The successful treatment lies in the timely recognition and early use of dantrolene.[1]As an inhibitor of Ca2+release through ryanodine receptor(RYR)channels,the skeletal muscle relaxant dantrolene has proven to be both a valuable experimental probe of intracellular Ca2+signaling and a lifesaving treatment for MH.[2]Dominant mutations in the skeletal muscle RYR1 gene are well-recognized causes of both malignant hyperthermia susceptibility(MHS)and central core disease(CCD).

关键词： hyperthermia malignant elevated

Evaluating the historical,clinical,and cultural value of the Tian Hui Yi Jian

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Journal of Traditional Chinese Medicine 2024年第1期44卷 220-221页

作者： YU Linyong GU man China Academy of Chinese Medical Sciences Beijing 100700China Institute for History of Medicine and Medical Literature China Academy of Chinese Medical SciencesBeijing 100700China

Tian Hui Yi Jian was compiled by the Tianhui Medical manuscripts Compilation Group,which includes scholars from the Institute for History of Medicine and Medical Literature of the China Academy of Chinese Medical Sciences(CACMS),Chengdu University of Traditional Chinese Medicine,Chengdu Institute of Cultural Relics and Archaeology,and Jingzhou Cultural Relics Protection *** was published by the Cultural Relics Press in November *** volume includes images of eight medical manuscripts,along with the Team's annotations,and photographs of a lacquered figurine with meridian-channels and words on its surface.

关键词： surface Chengdu Tian