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Maternal dietary patterns associated with bone density in Chinese lactating women and infants at 6 months postpartum:a prospective study using data from 2018-2019

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Food Science and Human Wellness 2024年第5期13卷 2668-2676页

作者： Yalin Zhou Xiaoyu Zhu Ying Lü Runlong Zhao Hanxu Shi Wanyun Ye Zhang Wen Rui Li Hanming Huang yajun xu Department of Nutrition and Food Hygiene School of Public HealthPeking UniversityBeijing100083China PKUHSC-China Feihe Joint Research Institute of Nutrition and Healthy Lifespan Development Beijing 100083China Beijing Northern Hospital Beijing 100089China Beijing Key Laboratory of Toxicological Research and Risk Assessment for Food Safety Peking UniversityBeijing 100083China

This cohort study was designed to explore the relationship between maternal dietary patterns(DPs)and bone health in Chinese lactating mothers and *** recruited 150 lactating women at 1-month *** estimated bone mineral density(eBMD)of subjects’calcanei and the information on dietary intake were *** 5-month follow-up,the eBMD of mothers and their infants were measured *** analysis was applied to determine maternal *** linear models were used to evaluate the association between maternal DPs and maternal eBMD loss or infants’*** all potential covariates adjusted,Factor 2(high intake of whole grains,tubers,mixed beans,soybeans and soybean products,seaweeds,and nuts)showed a positive association with the changes of maternal eBMD(β=0.16,95%CI:0.005,0.310).Factor 3(high intake of soft drinks,fried foods,and puffed foods)was inversely correlated with the changes of maternal eBMD(β=-0.22,95%CI:-0.44,0.00).The changes of maternal eBMD were positively associated with 6-month infants’eBMD(β=0.34,95%CI:0.017,0.652).In conclusion,Factor 2 might contribute to the maintenance of eBMD in lactating women,while Factor 3 could exacerbate maternal eBMD ***,the changes of maternal eBMD presented a positive correlation with 6-month infants’eBMD.

关键词： Dietary patterns Estimated bone mineral density Lactating women

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考虑能耗节约的集装箱码头装卸设备集成调度

计算机集成制造系统 2024年第7期30卷 2608-2620页

作者：张煜唐可心徐亚军计三有武汉理工大学交通与物流工程学院湖北武汉430063 武汉理工大学港口物流技术与装备教育部工程研究中心湖北武汉430063 武汉理工大学韶关研究院广东韶关512100

针对自动化集装箱码头中岸桥与人工智能运输机器人(ART)的集成调度问题,依据作业阶段将设备能耗划分成多个表现形式,构建以最小化岸桥和ART的总能耗为目标的整数规划模型。为提高求解质量,提出一种具有重组变异和随机扰动的自适应粒子... 详细信息

针对自动化集装箱码头中岸桥与人工智能运输机器人(ART)的集成调度问题,依据作业阶段将设备能耗划分成多个表现形式,构建以最小化岸桥和ART的总能耗为目标的整数规划模型。为提高求解质量,提出一种具有重组变异和随机扰动的自适应粒子群算法。根据不同时期的搜索需求,对惯性权重实行自适应调整;并引入随机粒子增强个体的交互能力,结合迭代进程对最优粒子实施不定维更新,为其摆脱局部困境提供更多机会。最后,以天津港北疆C段自动化集装箱码头为研究背景设计了不同规模算例,将改进算法与GUROBI求解器以及其他算法进行比较,验证了模型和算法的有效性。结果表明,随着岸桥和ART的配置数量逐渐增加,作业进程加快,码头总能耗分别呈现降低和先降后升的趋势;此外,相比于传统的调度模型,所提方法能够在较短的完工时间里节约更多的作业能耗。

关键词：集成调度改进粒子群优化算法自动化集装箱码头最小化能耗

混合Bregman投影算法在Banach空间中分裂不动点问题的强收敛性

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绍兴文理学院学报 2024年第2期44卷 44-57页

作者：倪仁兴徐亚军绍兴文理学院数理信息学院浙江绍兴312000

在p-一致凸且一致光滑的Banach空间中,利用Bregman投影,构造一新的混合投影迭代算法,逼近Bregman拟严格伪压缩映射不动点集和分裂可行性问题的公共解.目的是将2017年Chen J Z,Hu H Y和Ceng L C的研究结果中的迭代系数α_(n)须满足0 详细信息

在p-一致凸且一致光滑的Banach空间中,利用Bregman投影,构造一新的混合投影迭代算法,逼近Bregman拟严格伪压缩映射不动点集和分裂可行性问题的公共解.目的是将2017年Chen J Z,Hu H Y和Ceng L C的研究结果中的迭代系数α_(n)须满足0

关键词：分裂可行性问题 Bregman拟严格伪压缩映射 Bregman投影强收敛性

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非同频场景下无人机遥控器信号参数估计方法

兵器装备工程学报 2024年第7期45卷 298-304页

作者：徐亚军高田露唐文波张强鲁合德中国民用航空飞行学院四川广汉618307

为了有效地管控和反制无人机,准确地估计无人机遥控器信号的参数,提出了一种非同频场景下无人机遥控器信号参数估计方法。该方法利用谱图变换法将信号转换为时频图,并对每个时隙的频谱进行插值以提高频域分辨率;借助全连接神经网络估计... 详细信息

为了有效地管控和反制无人机,准确地估计无人机遥控器信号的参数,提出了一种非同频场景下无人机遥控器信号参数估计方法。该方法利用谱图变换法将信号转换为时频图,并对每个时隙的频谱进行插值以提高频域分辨率;借助全连接神经网络估计出每个时隙中的跳频信源个数;将门限自适应去噪算法和K-means算法相结合抑制噪声分量,估计出起跳时刻、跳频周期、中心频率以及总带宽等参数。实验表明,所提方法在上述参数估计性能方面相比2种传统方法具有明显优势。

关键词：无人机跳频信号参数估计全连接神经网络非同频

The estimation of a critical shear stress based on a bottom tripod observation in the southwest off Jeju Island,the East China Sea

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Acta Oceanologica Sinica 2016年第11期35卷 105-112页

作者： ZHAO Liang xu yajun YUAN Ye College of Marine and Environmental Science Tianjin University of Science and Technology National Marine Environmental Forecasting Center State Oceanic Administration

The resuspension and deposition of sediment within a bottom boundary layer（BBL） is the main dynamic processes that control the fate of the suspended sediment in shelf *** numerical study of sediment transport patterns relies on the knowledge of some critical parameters that describe sediment erosion and deposition.A critical shear stress is estimated based on field observations at the edge of a mud area southwest off Jeju Island,the East China *** the basis of the simultaneous observation of velocity and suspended sediment concentrations within the BBL by means of acoustic instruments including an acoustic Doppler velocimeter and an acoustic Doppler current profiler,the settling velocity is estimated by turbulent oscillations of the SSC under the assumption of inertial-dissipation *** method gives a mean value of 0.91 mm/s and standard deviation of 0.20 mm/s,which is an order of magnitude larger than the value obtained by an empirical method of Soulsby and by an in situ submersible particle size *** difference is possibly due to the distinct natures of two methodologies,the inertial-dissipation method is more indicative of the BBL dynamics and is thus believed to provide reasonable in situ estimates of the settling velocity,whereas Soulsby＇s method is usually suitable for still water.A novel method for estimating the critical stresses of erosion and deposition based on statistical analyses of the temporal variability of the SSC（which is defined as a derivative of the depth-averaged SSC with respect to time） and the corresponding bottom shear stress is *** critical stresses of erosion and deposition vary between 0.11 Pa and 0.25 Pa with corresponding median values of 0.20 Pa and 0.16 Pa,respectively,which confirms that the critical stresses of erosion is somewhat higher than the critical stresses of *** method of estimating the critical shear stress by means of the settling velocity is also employed,which yields reas

关键词： suspended sediment critical shear stress settling velocity East China Sea

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植物内生菌研究方法

微生物学通报 2024年第6期51卷 1887-1897页

作者：刘梦洁徐亚军黄雪珍赵龙飞河南师范大学生命科学学院河南新乡453007 商丘师范学院生物与食品学院商丘市农业微生物资源开发重点实验室河南商丘476000

植物内生菌是植物微生态系统中不可或缺的组成部分,植物微生物类群的主要成员是内生菌,它们栖息在植物组织或组织间隙中,并且多数内生菌通过不同的途径协助植物生长。植物中普遍存在种类丰富且结构复杂的内生菌群落,有益内生菌具有促进... 详细信息

植物内生菌是植物微生态系统中不可或缺的组成部分,植物微生物类群的主要成员是内生菌,它们栖息在植物组织或组织间隙中,并且多数内生菌通过不同的途径协助植物生长。植物中普遍存在种类丰富且结构复杂的内生菌群落,有益内生菌具有促进植物生长、增强植物抗逆性、产生有利用价值次生代谢物的功能。本文通过对国内外内生菌资源研究方法的相关文献回顾,探讨植物内生菌与宿主植物的关系、内生菌多样性、分离和定殖的研究方法,探索内生菌资源对宿主植物的作用和相关机制,展望新技术在植物内生菌研究方面的趋势,为其在相关领域的应用提供理论参考。

关键词：植物内生菌促进生长作用抗逆性定殖次生代谢物

三维超声技术在游离腓肠内侧动脉穿支皮瓣修复足背创面中的应用研究

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中国修复重建外科杂志 2024年第5期38卷 593-597页

作者：马涛张宇轩许亚军周建东许同龙张兴飞胡雨璇宜兴市人民医院手外科江苏宜兴214200 无锡市第九人民医院足踝外科江苏无锡214000

目的探讨对腓肠内侧动脉穿支皮瓣采用宽频线阵容积探头引导下三维超声技术定位穿支的准确性,以及基于此设计皮瓣修复足背创面的疗效。方法2019年1月—2022年12月,收治30例足背皮肤软组织缺损患者。男19例,女11例;年龄22~63岁,平均43.9... 详细信息

目的探讨对腓肠内侧动脉穿支皮瓣采用宽频线阵容积探头引导下三维超声技术定位穿支的准确性,以及基于此设计皮瓣修复足背创面的疗效。方法2019年1月—2022年12月,收治30例足背皮肤软组织缺损患者。男19例,女11例;年龄22~63岁,平均43.9岁。致伤原因:交通事故伤12例,重物压砸伤15例,机器伤3例。受伤至入院时间1~8 h,平均3.5 h。彻底清创后创面范围为5 cm×3 cm~17 cm×5 cm,予以封闭式负压引流敷料覆盖,待创面无明显感染后行腓肠内侧动脉穿支皮瓣修复。术前采用宽频线阵容积探头对腓肠内侧动脉穿支及主干血管进行探测,获得完整三维图像,记录穿支数量、位置以及主干血管在肌肉内位置、走行方式,并在此基础上选择合适穿支设计皮瓣及指导皮瓣切取;术中皮瓣切取范围6 cm×4 cm~18 cm×6 cm。将术前探测与术中观察的穿支进行对比,计算敏感度及阳性预测值,评估三维超声技术定位穿支的准确性。供区直接拉拢缝合25例,游离植皮修复5例。结果30例患者术前探测发现60支腓肠内侧动脉穿支、术中发现58支,其中术前与术中相符穿支56支,敏感度93.3%、阳性预测值96.6%;术前探测及术中观察主干血管在肌肉内位置、走行方式基本相符。术后皮瓣均顺利成活,创面Ⅰ期愈合;供区切口均Ⅰ期愈合,植皮成活。患者均获随访,随访时间9~24个月,平均14.7个月。皮瓣外观、色泽、质地良好,穿鞋及行走无明显影响;末次随访时美国矫形足踝协会(AOFAS)踝与后足功能评分为80~92分,平均87.5分;患者满意度达优29例、良1例。结论宽频线阵容积探头引导下三维超声技术定位腓肠内侧动脉穿支准确,三维成像更直观,可用于指导腓肠内侧动脉穿支皮瓣设计及切取。

关键词：腓肠内侧动脉穿支皮瓣宽频线阵容积探头三维超声技术足背创面修复

Vibration analysis of a single row angular contact ball bearing with the coupling errors including the surface roundness and waviness

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Science China(Technological Sciences) 2020年第6期63卷 943-952页

作者： LIU Jing PANG RuiKun xu yajun DING ShiZhao HE QuBo State Key Laboratory of Mechanical Transmission Chongqing UniversityChongqing 400044China College of Mechanical Engineering Chongqing UniversityChongqing 400044China Chongqing Materials Research Institute Co.Ltd. Chongqing 400707China

Roundness and surface waviness are main manufacturing errors on the components of single row angular contact ball bearings(ACBBs).An analytical study for vibrations of the ACBBs with coupling errors including the roundness and waviness can be useful for the vibration control of the rotating ***,most previous works only focused on the single error modelling *** this paper,an improved time dependent displacement excitation(TDDE)model is proposed to consider the coupling errors including the roundness and waviness on the inner and outer races of an *** TDDE model for the roundness and waviness is established by using a combination of several sinusoidal functions.A dynamic model in the previous study is improved to consider the influences of coupling errors including the roundness and *** Hertzian contact theory and Dowson’s method are adopted to calculate the bearing contact *** time-and frequency-domain vibrations for the experimental and simulation results are compared to show some model *** influences of roundness orders and waviness amplitudes on the vibrations of the ACBB are *** obtained results show that the coupling errors including the roundness and waviness have some influence on the time-domain impulse waveform and frequency-domain spectrum characteristics of the bearing *** differences of the vibrations between the coupling errors and sing error are from 4%to 42%.This paper can provide a useful guidance for the accurate diagnosis of surface imperfections in the ACBBs.

关键词： angular contact ball bearing(ACBB) roundness error waviness error vibration dynamic model

Soft-sediment Deformation Structures Related to Earthquake from the Devonian of the Eastern North Qilian *** Its Tectonic Significance

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Acta Geologica Sinica(English Edition) 2008年第6期82卷 1185-1193页

作者： DU Yuansheng xu yajun YANG Jianghai Key Laboratory of Biogeology and Environmental Geology of Education Ministry Wuhan 430074 Faculty of Earth Sciences China University of Geosciences Wuhan 430074

Devonian in the North Qilian orogenic belt and Hexi Corridor developed terrestrial molasse of later stage of foreland basin caused by collision between the North China plate and Qaidam microplate. The foreland basin triggered a intense earthquake, and formed seismites and earthquake-related soft-sediment deformation. The soft-sediment deformation structures of Devonian in the eastern North Qilian Mts. consist of seismo-cracks, sandstone dykes, syn-depositional faults, microfoids （micro-corrugated lamination）, fluidized veins, load casts, flame structures, pillow structures and brecciation. The seismo-cracks, syn-depositional faults and microfolds are cracks, faults and folds formed directly by oscillation of earthquake. The seismic dykes formed by sediment instilling into seismic cracks. Fluidized veins were made by instilling into the seismo-fissures of the fluidized sands. The load casts, flame structures and pillow structures were formed by sinking and instilling caused from oscillation of earthquake along the face between sandy and muddy beds. The brecciation resulted from the oscillation of earthquake and cracking of sedimentary layers. The seismites and soft-sediment deformations in Devonian triggered the earthquake related to tectonic activities during the orogeny and uplift of North Qilian Mts.

关键词： North Qilian Mts. seismites soft-sediment deformation Devonian tectonics