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Deformation characteristics and analog modeling of transtensional structures in the Dongying Sag,Bohai Bay Basin

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Frontiers of Earth Science 2024年第1期18卷 227-241页

作者： Dawei DONG Li zhao Weizhong ZHANG Jiyan LI ruixiang ZHANG Jianlei YANG Guangzeng WANG Shandong Institute of Petroleum and Chemical Technology Dongying 257061China College of Resources and Environment Shandong Agriculture UniversityTai᾽an 271018China Geophysical Research Institute of Shengli Oilfield Branch Company SINOPECDongying 257022China Research Institute of Petroleum Exploration&Development Shengli Oilfield CompanySINOPECDongying 257000China College of Marine Geosciences Ocean University of ChinaQingdao 266100China

Hydrocarbon exploration in the Dongying Sag is constrained by the development of many Cenozoic transtensional structures with complex patterns and dynamic *** study uses seismic interpretation and analog modeling to investigate these transtensional *** results include dividing these transtensional structures into boundary fault,oblique rifting,and deep strike-slip fault controlled structures,according to the relationships between main and secondary *** developed in the steep slope zone,the central sag zone,and the slope zone,*** profile,the transtensional structures formed appear to be semi-flower-like,step-like,or *** plan-view,they appear to be broom-like,soft-linked,or en-echelon ***,these transtensional structures are controlled by the oblique normal slip of boundary faults,by the oblique extension of sub-sags,and by the later extension of deep strike-slip *** geometric deformation of these transtensional structures is controlled by the angles between the regional extension direction and the strike of boundary faults,deep faults,or sub-sags,where a larger angle corresponds to less developed transtensional ***,the transtensional structures in the Dongying Sag were created by multi-phase and multi-directional extensions in the Cenozoic—which is also controlled by pre-existing *** strike of newborn secondary faults was determined by the regional extension direction and pre-existing structures.

关键词： transtensional structure seismic interpretation analogue modeling dynamic mechanism Dongying Sag

Study on the mechanism and law of temperature,humidity and moisture content on the mechanical properties of molded fiber products

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Journal of Bioresources and Bioproducts 2024年第3期9卷 351-368页

作者： Zhiqiang Fu Tong zhao Hu Wang Jingyi Wei Haozhe Liu Liying Duan Yan Wang ruixiang Yan School of Light Industry Science and Engineering Tianjin University of Science and TechnologyTianjin 300457China Department of Transportation and Vehicle Engineering Tangshan UniversityTangshan 063000HebeiChina College of Mechanical Engineering Tianjin University of Science and TechnologyTianjin 300457China

The change of temperature, humidity and moisture content (MC) will lead to the change of mechanical properties of molded fiber products (MFP). However, it is difficult to decouple the effects of temperature, humidity and MC on the mechanical properties of MFP, and predict the mechanical properties of MFP during the use. In this study, the laws and mechanism of mechanical properties of MFP with ambient temperature, humidity and MC were studied. The results showed that the direct effect of temperature (20−70 °C) on mechanical properties of MFP was insignificant, and the mechanical properties of MFP were mainly changed by MC. The MC was related to ambient temperature and humidity, and the relationship between the three could be described by the modified Guggenheim-Anderson-de Boer (GAB) model (20−70 °C and 30 %–90 % relative humidity). With the increase of MC, the elastic modulus and fracture strain was increased and decreased linearly, the yield strength and failure strength were presented GaussAmp laws, and the failure strain was presented asymptotic regressed distribution law. Two fracture modes of MFP, brittle fracture and ductile fracture, were revealed by the scanning electron microscopy of the mesoscopic fiber structure of sugarcane bagasse molded fiber products. The mathematical models and the changes of fiber structure were verified by wheat straw molded fiber products and waste paper molded fiber products. This study was contributed to understand the effects and mechanism of the change of temperature, humidity and MC on the mechanical properties of MFP.

关键词： Temperature Relative humidity Moisture content Molded fiber products Mechanical properties

Modulatory effects of Lactiplantibacillus plantarum on chronic metabolic diseases

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Food Science and Human Wellness 2023年第4期12卷 959-974页

作者： Lei Tian ruixiang zhao Xinyi Xu Zhiwei Zhou Xiaofang Xu Dongmei Luo Zhiqiang Zhou Yu Liu Ariel Kushmaro Robert S.Marks András Dinnyés Qun Sun Key Laboratory of Bio-Resource and Eco-Environment of the Ministry of Education College of Life SciencesSichuan UniversityChengdu 610064China Institute for Marine and Antarctic Studies University of TasmaniaNewnham 7248Australia College of Biomass Science and Engineering Sichuan UniversityChengdu 610064China Department of Urology Institute of Urology(Laboratory of Reconstructive Urology)West China HospitalSichuan UniversityChengdu 610041China Avram and Stella Goldstein-Goren Department of Biotechnology EngineeringFaculty of Engineering SciencesBen Gurion University of the NegevBeer-Sheva 84105Israel BioTalentum Ltd. Gödöllő2100Hungary Department of Cell Biology and Molecular Medicine University of SzegedSzeged H-6720Hungary Hungarian University of Agriculture and Life Sciences Institute of Physiology and Animal NutritionDepartment of Physiology and Animal HealthGödöllő2100Hungary

The increased global incidence of chronic metabolic diseases,a vital threat to human health and a burden on our healthcare systems,includes a series of clinical metabolic syndromes such as obesity,diabetes,hypertension,and *** of the well-known probiotic microorganisms,Lactiplantibacillus plantarum plays an important role in promoting human health,including inhibiting the occurrence and development of a variety of chronic metabolic *** present study provides an overview of the preventive and therapeutic effects of *** on diabetes,obesity,non-alcoholic fatty liver disease,kidney stone disease,and cardiovascular diseases in animal models and human clinical *** *** demonstrated its ability to reduce inflammatory and oxidative stress levels by regulating the production of cytokines and short-chain fatty acids(SCFAs),the activity of antioxidant enzymes,and the balance of intestinal microbial communities to alleviate the symptoms of chronic metabolic ***,updated applications and technologies of *** in food and biopharmaceutical industries are also *** the characteristics and functions of *** will guide the development of related probiotic products and explore the modulatory benefit of *** supplementations on the prevention and treatment of multiple chronic metabolic diseases.

关键词： Lactiplantibacillus plantarum Diabetes Obesity Non-alcoholic fatty liver disease Kidney stone disease Cardiovascular diseases

The first near real-time inverted echo sounder observation in the South China Sea

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Acta Oceanologica Sinica 2021年第6期40卷 129-130页

作者： ruixiang zhao Xiaohua Zhu Chuanzheng Zhang Hua Zheng State Key Laboratory of Satellite Ocean Environment Dynamics Second Institute of OceanographyMinistry of Natural ResourcesHangzhou 310012China Southern Laboratory of Ocean Science and Engineering(Zhuhai) Zhuhai 519082China School of Oceanography Shanghai Jiao Tong UniversityShanghai 200030China

We report the first near real-time inverted echo sounder(IES)observation in the South China Sea(Fig.1).Although the first IES observation in the South China Sea was in 2005,and the near real-time IES observation module was first developed in 2012(http://***/dynamics/IES/***),the real-time IES has never been deployed in the South China Sea until the reporting of observations in this *** is a bottom-mounted mooring that records the round-trip acoustic travel time from the bottom to the surface and back(τ).

关键词： mounted travel sounder

Origin and formation of the Ryukyu Current revealed by HYCOM reanalysis

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Acta Oceanologica Sinica 2019年第11期38卷 1-10页

作者： Min Wang zhaojun Liu Xiaohua Zhu Xiaomei Yan Zhongzhe Zhang ruixiang zhao School of Oceanography Shanghai Jiao Tong UniversityShanghai 200030China State Key Laboratory of Satellite Ocean Environment Dynamics Second Institute of OceanographyMinistry of Natural ResourcesHangzhou 310012China Key Laboratory of Ocean Circulation and Waves Institute of OceanologyChinese Academy of SciencesQingdao 266071China College of Marine Science and Environment Dalian Ocean UniversityDalian 116023China

The origin of the Ryukyu Current(RC)and the formation of its subsurface velocity core were investigated using a 23-year(1993–2015)global Hybrid Coordinate Ocean Model(HYCOM)*** volume transport of the RC comes from the Kuroshio eastward branch(KEB)east of Taiwan and part of the North Pacific Subtropical Gyre(p-NPSG).From the surface to 2000m depth,the KEB(p-NPSG)transport contributes 41.5%(58.5%)to the mean total RC *** KEB originally forms the subsurface velocity core of the RC east of Taiwan due to blockage of the subsurface Kuroshio by the Ilan Ridge(sill depth:700 m).Above 700m,the Kuroshio can enter the East China Sea(ECS)over the Ilan Ridge,meanwhile,the blocked Kuroshio below 700m turns to the right and flows along the Ryukyu *** the RC flowing northeastward,the p-NPSG contribution strengthens the subsurface maximum structure of the RC owing to the blockage of the Ryukyu *** the surface layer,the p-NPSG cannot form a stable northeastward current due to frequent disturbance by mesoscale eddies and water exchange through the gaps(with net volume transport into ECS)between the Ryukyu Islands.

关键词： origins of Ryukyu Current subsurface velocity core volume transport Kuroshio HYCOM

Internal Tide Generation and Dissipation by Small Periodic Topography in Deep Ocean

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Journal of Ocean University of China 2019年第4期18卷 761-770页

作者： LI Qiang MAO Xianzhong DENG Guotong zhao ruixiang ZHANG Chuanzheng ZHU Xiaohua Graduate School at Shenzhen Tsinghua University Shenzhen 518055 China State Key Laboratory of Satellite Ocean Environment Dynamics Second Institute of Oceanography Ministry of Natural Resources Hangzhou 310012 China

Internal tides generated by a rough sea floor are an important source of mixing in the abyssal ocean. Two linear models are employed to evaluate the conversion rate from barotropic tides to internal tides and the energy distribution in each mode. Considering the periodicity of internal tides, the topography is represented by periodically distributed knife edges and sinusoidal ridges within one wavelength of mode-1 internal tides. The knife edges generate greater internal tides than the sinusoidal ridges due to their sharp shape, which approximates an extremely supercritical condition. Energy flux concentrates in modes whose numbers are multiples of the knife edge or ridge number. Then, a fully nonlinear model that integrates viscosity and diffusion is implemented, and its results are compared with those of the linear model. Internal wave rays generated in the nonlinear model show a distribution similar to the linear models’ prediction. High dissipation rates coincide with the rays, suggesting that nonlinear wave-wave interaction is a domi- nant mechanism for internal tide dissipation in the abyssal ocean.

关键词： internal wave generation multiple ridges normal modes conversion rate dissipation

跳频抗干扰通信系统中LDPC码的编码优化设计

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系统工程与电子技术 2022年第11期44卷 3548-3555页

作者：王任之潘克刚赵瑞祥陆军工程大学通信工程学院南京江苏210007

为进一步提升低密度奇偶校验(low-density parity-check, LDPC)编码跳频通信系统抗干扰能力,提出一种对抗部分频带干扰样式的LDPC编码构造方法。首先针对不同干扰因子参数优化了LDPC码字在干扰环境下的度分布序列,然后通过基于渐进边增... 详细信息

为进一步提升低密度奇偶校验(low-density parity-check, LDPC)编码跳频通信系统抗干扰能力,提出一种对抗部分频带干扰样式的LDPC编码构造方法。首先针对不同干扰因子参数优化了LDPC码字在干扰环境下的度分布序列,然后通过基于渐进边增长和近似环外信息算法构造基矩阵,最后采用改进部分分割移位系数矩阵扩展得到校验矩阵,并结合不等差错保护特性应用到信息位的干扰保护上。该构造方法兼顾优化的度分布和准循环结构。仿真结果表明,所构造的码字性能良好,相同条件下,抗干扰性能优于现行主流类型码字的抗干扰性能。

关键词：跳频部分频带干扰低密度奇偶校验码编码设计度分布优化

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肌腱的生物力学模型构建与试验分析

机械工程学报 2023年第10期59卷 96-105页

作者：田国富赵瑞祥于灏王婷沈阳工业大学机械工程学院沈阳110870 中国医科大学附属第一医院骨科沈阳110001 沈阳医学院研究生院沈阳110034

为了测试肌腱的生物力学特性,并评估本构模型所描述软组织材料力学特性的能力,对猪趾伸屈肌腱进行力学性能拉伸试验,得到肌腱拉伸载荷与位移之间的关系,根据材料大变形不可压缩的特性运用新的数据处理方法得到材料的应力-应变关系曲线,... 详细信息

为了测试肌腱的生物力学特性,并评估本构模型所描述软组织材料力学特性的能力,对猪趾伸屈肌腱进行力学性能拉伸试验,得到肌腱拉伸载荷与位移之间的关系,根据材料大变形不可压缩的特性运用新的数据处理方法得到材料的应力-应变关系曲线,应用非线性最小二乘法求解肌腱本构模型的材料参数。然后利用有限元分析软件对单轴拉伸进行仿真计算,并对比相应试验数据,以验证材料参数的可靠性。最后基于已验证的本构模型,建立两切口半切肌腱仿真模型,并进行试验验证。研究结果表明,采用的力学性能试验和选用的本构模型能够表征肌腱在拉伸过程中的材料力学行为并且应用到有限元仿真中,具有适用性强、准确性较高的特点,为预测肌腱延长术中肌腱组织的力学行为提供了一种新的方法和试验基础。

关键词：肌腱力学特性本构模型超弹性横观各向同性有限元分析

Generation and propagation of 21-day bottom pressure variability driven by wind stress curl in the East China Sea

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Acta Oceanologica Sinica 2020年第7期39卷 91-106页

作者： Hua Zheng Xiao-Hua Zhu Hirohiko Nakamura Jae-Hun Park Chanhyung Jeon ruixiang zhao Ayako Nishina Chuanzheng Zhang Hanna Na Ze-Nan Zhu Hong-Sik Min State Key Laboratory of Satellite Ocean Environment Dynamics Second Institute of OceanographyMinistry of Natural ResourcesHangzhou 310012China School of Oceanography Shanghai Jiao Tong UniversityShanghai 200030China Southern Marine Science and Engineering Guangdong Laboratory(Zhuhai) Zhuhai 519082China Faculty of Fisheries Kagoshima UniversityKagoshima 8900056Japan Department of Ocean Sciences Inha UniversityIncheon 22212Korea Department of Mechanical Engineering Massachusetts Institute of TechnologyCambridge 02139USA School of Earth and Environmental Sciences Seoul National UniversitySeoul 08826Korea Ocean Circulation and Climate Research Center Korea Institute of Ocean Science and TechnologyBusan 49111Korea

Between June 2015 and June 2017,two pressure-recording inverted echo sounders(PIESs)and five current and pressure-recording inverted echo sounders(CPIESs)deployed along a section across the Kerama Gap acquired a dataset of ocean bottom pressure records in which there was significant 21-day variability(Pbot21).The Pbot21,which was particularly strong from July-December 2016,was coherent with wind stress curl(WSC)on the continental shelf of the East China Sea(ECS)with a squared coherence of 0.65 for a 3-day time lag.A barotropic ocean model demonstrated the generation,propagation,and dissipation of *** modeled results show that the Pbot21 driven by coastal ocean WSC in the ECS propagated toward the Ryukyu Island Chain(RIC),while deep ocean WSC could not induce such *** the continental shelf,the Pbot21 was generated nearly synchronously with the WSC from the coastline to the southeast but dissipated within a few days due to the effect of bottom *** detection of Pbot21 by the moored array was dependent on the 21-day WSC patterns on the continental *** Pbot21 driven southeast of the Changjiang Estuary by the WSC was detected while the Pbot21generated northeast of the Changjiang Estuary was not.

关键词： pressure-recording inverted echo sounder East China Sea bottom pressure wind stress curl