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Geometric modeling of Holocene large-river delta growth patterns,as constrained by environmental settings

Science China Earth Sciences 2021年第2期64卷 318-328页

作者： Gaocong LI Qiong XIA yaping wang Zhiqiang LI Shu GAO Department of Marine Technology Guangdong Ocean UniversityZhanjiang 524088China Southern Marine Science and Engineering Guangdong Laboratory(Zhuhai) Zhuhai 519000China Marine Resources Big Data Center of South China Sea Southern Marine Science and Engineering Guangdong Laboratory(Zhanjiang)(Zhanjiang Bay Laboratory)Zhanjiang 524088China State Key Laboratory for Estuarine and Coastal Research East China Normal UniversityShanghai 200046China

Topographic/bathymetric conditions of the continental shelf can significantly influence the long-term growth of river *** particular,these conditions constrain the accommodation space for sedimentation in the deltaic *** this study,we use a conceptual geometric model to evaluate the role played by this factor,on the basis of the principle of mass *** Ganges-Brahmaputra,Mekong and Nile deltas are examined as three typical examples,in terms of their different original seabed *** control variate method is applied to eliminate the effect of the difference in model input *** results show that,assuming a constant sediment load,the delta growth rate will decrease with time;a higher value of the original seabed slope leads to a lower shoreline progradation rate for the subaerial delta and a higher growth rate for the subaqueous ***,the original seabed morphology represented by slope is a critical factor affecting the evolution of Holocene large-river *** results explain the interrelationships between sediment load,deltaic plain area,and the original seabed slopes for the 27 large-river deltas worldwide,located in the middle/low latitudes,with different tectonic *** the future,the conceptual geometric model may be combined with sediment dynamic modeling to identify more details of the evolution of these deltas.

关键词： Large-river deltas Original topography/bathymetry Geometric modeling Growth geometry Holocene

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目标管理理论指导的护理模式在肺炎患儿中的应用

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临床医学工程 2024年第9期31卷 1149-1150页

作者：田玉梅王亚萍新蔡县人民医院儿科河南驻马店463500

目的探讨目标管理理论指导的护理模式在肺炎患儿中的应用效果。方法选取2021年1月至2023年12月我院收治的80例肺炎患儿,按照抽签法分为两组各40例。对照组采用常规护理,观察组采用目标管理理论指导的护理模式。比较两组症状改善情况、... 详细信息

目的探讨目标管理理论指导的护理模式在肺炎患儿中的应用效果。方法选取2021年1月至2023年12月我院收治的80例肺炎患儿,按照抽签法分为两组各40例。对照组采用常规护理,观察组采用目标管理理论指导的护理模式。比较两组症状改善情况、肺功能、遵医行为。结果观察组各项症状消失时间短于对照组(P<0.05)。护理后,观察组FVC、VC、PEF水平高于对照组(P<0.05)。观察组各项遵医行为评分均高于对照组(P<0.05)。结论目标管理理论指导的护理模式可缩短肺炎患儿的症状消失时间,改善其肺功能,提高遵医行为。

关键词：目标管理理论护理肺炎患儿

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石灰粉粒度分布对压球效果影响研究

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耐火与石灰 2024年第3期49卷 54-56页

作者：曾宪军柳玉王亚平陕西北元化工集团股份有限公司神木719319

为提高石灰成球装置的石灰球团的强度和成球率,使石灰压球装置高效使用,利用现有试验室压球机开展了不同粒径石灰粉料的压球成型试验。结果发现,采用小于5 mm石灰颗粒的石灰球团强度和成球率较高,并对现场装置提出了诸多建议。

关键词：石灰粒度压球强度

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GB/T 41002—2022《儿童箱包通用技术规范》标准解读

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中国皮革 2024年第1期53卷 135-141页

作者：王亚萍白子竹谢津北京市产品质量监督检验研究院北京100025

介绍了国家标准GB/T 41002《儿童箱包通用技术规范》的制订背景,并与QB/T 1333—2018《背提包》和QB/T 2155—2018《旅行箱包》进行比较,指出标准之间的差异,解读了标准在产品技术要求、检验项目以及检测方法等方面的具体要求,阐述了标... 详细信息

介绍了国家标准GB/T 41002《儿童箱包通用技术规范》的制订背景,并与QB/T 1333—2018《背提包》和QB/T 2155—2018《旅行箱包》进行比较,指出标准之间的差异,解读了标准在产品技术要求、检验项目以及检测方法等方面的具体要求,阐述了标准制订的内容和依据,为国内相关检测机构和生产销售企业正确理解和运用该标准、准确判定儿童箱包的质量提供指导。

关键词： GB/T 41002 儿童箱包修订背景技术要求分析差异

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A perspective on fish gonad manipulation for biotechnical applications

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Chinese Science Bulletin 2006年第1期51卷 1-7页

作者： HU wei wang yaping ZHU Zuoyan State Key Laboratory of Freshwater Ecology and Biotechnology Institute of Hydrobiology the Chinese Academy of Sciences Wuhan 430072 China

The gonad is an essential organ for gen- erating sperm and ova in vertebrates. This review describes several pilot studies on gonad gene manipulation and development in fish. With antisense RNA techniques, we suppressed the gonad devel- opment, and thus the fertility, of an antisense gonad- otropin-releasing hormone (sGnRH) transgenic common carp. Then, using a tissue-specific exoge- nous gene excision strategy with sexual compensa- tion, we knocked out the gonad-specific transgene. Under the control of the rainbow trout protamine promoter, the transgenic fish expressed the reporter gene eGFP specifically in the spermary. These re- sults indicate that the fish gonad is a new model or- gan that can improve contemporary biotechnology experiments. Herein we discuss the potential of fish gonad manipulation for resolving important biosafety problems regarding transgenic fish generation and producing the new transgenic animal bioreactor.

关键词：输异基因鱼生物技术性腺脊椎动物 RNA

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电阻抗断层成像技术指导下康复护理对ICU呼吸衰竭患者机械通气时间和并发症的影响

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中国实用护理杂志 2024年第27期40卷 2111-2117页

作者：王亚萍庞璐吴霞云衢州市人民医院重症医学科衢州324000

目的分析电阻抗断层成像技术(EIT)指导下康复护理对ICU呼吸衰竭患者机械通气时间和并发症的影响,以期促进ICU呼吸衰竭患者肺康复护理锻炼措施的系统完善。方法采用随机对照试验方法,于2021年7月至2022年7月便利抽样法选取衢州市人民医院... 详细信息

目的分析电阻抗断层成像技术(EIT)指导下康复护理对ICU呼吸衰竭患者机械通气时间和并发症的影响,以期促进ICU呼吸衰竭患者肺康复护理锻炼措施的系统完善。方法采用随机对照试验方法,于2021年7月至2022年7月便利抽样法选取衢州市人民医院ICU收住的呼吸衰竭患者80例为研究对象,按照入院时间分组,2021年7—12月入院的40例患者为对照组,2022年2—7月入院的40例患者为观察组。对照组行常规康复护理措施,观察组行EIT指导下康复护理锻炼。对比分析2组患者的肺功能指数、ICU住院时间、机械通气时间、血气指数以及并发症发生率情况。结果对照组男22例,女18例,年龄(53.54±5.17)岁;观察组男21例,女19例,年龄(52.82±5.21)岁。干预后,观察组第1秒用力呼气容积、第1秒用力呼气容积/用力肺活量及第1秒用力呼气容积占预计值百分比分别为(2.82±0.67)L、(78.87±4.82)%及(74.24±9.65)%,高于对照组的(2.10±0.66)L、(65.59±3.67)%及(60.87±9.66)%,差异均有统计学意义(t=4.84、13.86、6.19,均P<0.05);观察组ICU住院时间和机械通气时间分别为(10.37±1.34)和(9.82±1.24)h,少于对照组的(12.19±1.22)和(11.54±1.37)h,差异均有统计学意义(t=6.35、5.89,均P<0.05);观察组动脉血氧分压及氧合指数分别为(90.76±12.46)mmHg(1 mmHg=0.133 kPa)和(377.36±54.38),高于对照组的(72.65±11.65)mmHg和(329.15±42.26),差异均有统计学意义(t=6.72、4.43,均P<0.05);观察组动脉血二氧化碳分压为(45.32±4.87)mmHg,低于对照组的(52.73±4.27)mmHg,差异有统计学意义(t=7.24,P<0.05);观察组并发症发生率为7.50%(3/40),低于对照组的25.00%(10/40),差异有统计学意义(χ^(2)=4.50,P<0.05)。结论EIT导向下康复护理有利于提高ICU呼吸衰竭患者血气指数,改善肺通气功能,有效缩短患者气管插管时间及ICU住院时间,减少相关并发症发生率。

关键词：康复护理呼吸衰竭并发症机械通气电阻抗断层成像技术

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数字化转型背景下国际物流企业服务质量研究

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黑龙江科学 2024年第5期15卷 155-157页

作者：王雅平孙晓叶山东华宇工学院山东德州253034

为探讨数字化转型背景下国际物流企业的服务质量,选择我国进入国际物流排名前十位的中国邮政、顺丰国际、圆通国际三家物流企业调查分析物流企业的可信任程度、企业形象及售后服务等内容。研究结果显示,用户对包裹送达范围、包裹送达时... 详细信息

为探讨数字化转型背景下国际物流企业的服务质量,选择我国进入国际物流排名前十位的中国邮政、顺丰国际、圆通国际三家物流企业调查分析物流企业的可信任程度、企业形象及售后服务等内容。研究结果显示,用户对包裹送达范围、包裹送达时效性、包裹运送过程中不损坏,以及运费报价等的满意度较高。对确保包裹送货上门、企业网站及客户端、企业仓库设施及环境、运输及集货设备、车辆上门揽收、客服热线畅通、处理投诉及时、揽收时间灵活等情况较为满意。数字化转型背景下,国际贸易持续增多,国际物流企业应针对客户不满意的方面紧张针对性改善服务质量,以促进国际物流行业发展,为人们提供更好的服务。

关键词：国际物流可信任程度企业形象售后服务送达范围送达时效运费报价

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High-resolution data collection for analysis of sediment dynamic processes associatedwith combined current-wave action over intertidal flats

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Chinese Science Bulletin 2006年第7期51卷 866-877页

作者： wang yaping GAO Shu JIA Jianjun Key Laboratory for Coast and Island Development Ministry of Education Nanjing University Nanjing 210093 China Key Laboratory of Submarine Geo-Sciences Second Institute of Oceanography State Oceanic Administration Hangzhou 310012 China

An MIDAS-400 Customised Data Ac- quisition System was deployed to obtain current ve- locity and suspended sediment concentration profiles over the intertidal flat at wanggang, on the Jiangsu coast (China). At the same time, seawater tempera- ture, conductivity and pressure were measured. Us- ing a data sampling rate of 4 Hz, the high-frequency pressure signals in response to water surface fluc- tuations were recorded and subsequently trans- formed into wave parameters. The analytical results show that the apparent bed roughness length has a magnitude close to the height of sand ripples, which is much larger than the grain size diameter. The bot- tom shear stress associated with current-wave in- teraction is higher than the tidally-induced stress and intensified turbulent mixing and resuspension. Fur- thermore, several suspended sediment concentration peaks occurred during a tidal cycle, which can be related to strong turbulence near the bed caused by frontal tidal currents and the enhanced resuspension; advection and extreme weather conditions (e. g. storms and strong winds) also played an important role. Finally, large net suspended sediment fluxes were observed to present when the flood or ebb currents prolonged, i.e. the flow became quasi-unid- irectional during a tidal cycle. In general, the MIDAS- 400 is a suitable tool for high-resolution data collec- tion for the situations of combined current-wave ac- tion over intertidal flats; the data obtained can be used to analyze the processes and mechanisms of material transport.

关键词：高分辨率数据收集底板压力悬浮沉积浓缩潮间带

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Grain-size distribution patterns of suspended sediment in response to hydrodynamics on the Dafeng intertidal flat, Jiangsu, China

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Acta Oceanologica Sinica 2006年第6期25卷 63-77页

作者： LI Zhanhai GAO Shu CHEN Shenliang wang yaping State Key Laboratory of Estuarine and Coastal Research East China Normal University Shanghai 200062 China Key Laboratory of Coast and Island Development of Ministry of Education Nanjing University Nanjing 210093 China

Patterns of grain-size distributions of suspended sediment in relation to resuspension, settling, and tidal processes are investigated, based on in situ measurements over the Dafeng intertidal flat, on the Jiangsu coast, in the summer of 2002 and 2003. The suspended sediment here is dominated by fine and very fine silt, with a mean grain-size of 7 - 13 μm. The patterns of the grainsize distributions of suspended sediment during a tidal cycle are characterized by two types： one stable type representing insignificant spatial and temperal variations; and the other bimedal type with significant variations. The main factors influencing the grainsize distributions include resnspension, settling, suspended sediment imported into intertidal flats during the flood phase, and the grain-size distribution of seabed sediment. Resuspension increases the coarse particle content, enhances the mean grain-size of suspended sediment, and results in grain-size distributions for the suspended sediment similar to those of seabed sediment; the settling process has opposite effects on the suspended sediment. When resuspension occurs, the gain-size distributions of suspended sediment in the lower part of water column respond significantly to the current velocity. Where the influence of resuspension and settling processes is weak, the grain-size distributions of suspended sediment appear to be stable and almost identical for the various parts of intertidal flats during different measurement periods. Such distributions are referred to the background grain-size distribution, for which the mean grain-size over the Dafeng intertidal flat is around 7 μm.

关键词： grain-size distributions suspended sediment resuspension settling Jiangsu coast

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Geomorphic and hydrodynamic responses in salt marsh-tidal creek systems,Jiangsu,China

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Chinese Science Bulletin 1999年第6期44卷 544-549页

作者： yaping wang Renshun Zhang Shu Gao Chinese Acad Sci Inst Oceanol Qingdao 266071 Peoples R China Nanjing Normal Univ Nanjing 210097 Peoples R China

Salt marsh-tidal creek systems as a coastal geomorphological unit represent an important natural resource. The present study on Jiangsu salt marshes, eastern China, shows that variations in tidal current velocities in salt marsh creeks are controlled by the local tidal wave characteristics and the bed slope and elevation of the salt marshes and creeks. Likewise, the tidal currents modify the geomorphology of the salt marsh-tidal creek systems by transporting sediments and causing erosion/deposition. Storm events, which appear to have cyclical changes in their intensity relating to sunspot activities, can affect the geomorphic evolution of such systems. Further, in response to accelerated sea-level rise, accretional rates on salt marshes may increase. The tidal creeks have the function of transporting water and sediment onto the salt marsh surface; further, the energy of tidal currents and waves are dissipated within the salt marsh-tidal creek system. Hence, this coastal system has a potential value

关键词： salt marsh tidal creek geomorphology hydrodynamics China coast.

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