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Magnetic fabric characteristics of late Quaternary strata in Shanghai area

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Chinese Science Bulletin 1998年第18期43卷 1579-1583页

作者： Daidu Fan Qingqiang Cheng youzi cong congxian Li Tongji Univ State Educ Commiss Lab Marine Geol Shanghai 200092 Peoples R China State Oceanog Adm Inst Oceanog 1 Qingdao 266003 Peoples R China

The result of measurements and analyses on magnetic fabrics data for the late Quaternary core at Caoyangxincun in Shanghai shows that abrupt changes of magnetic fabric curves coincide with the boundaries between the marine strata and underlying stiff clay. Littoral, neritic, subtidal and tidal flat facies in the marine strata have distinct magnetic fabric characteristics. The curves of the parameters, K, P, L, q, display clear boundaries between various facies, which could serve as a new method for the stratigraphic subdivision and correlation.

关键词： Magnetic fabric stratigraphic subdivision and correlation Changjiang Delta.

Studies　on　sedimentary　events　in　Mariana　Trough　and　characteristics　of　geomagnetic　field　change

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Acta Oceanologica Sinica 1996年第4期15卷 457-468页

作者： cong youzi Han Guozhong Cheng Guoliang Sun Yuhang Wei Qingyun and Jiang Li First Institute of Oceanography State Oceanic Administration Qingdao 266003 China Institute of Geology State Seismological Bureau Beijing 100029 China Institute of Geophysics Academia Sinica Beijing 100101 China

The analysis on the magnetic fabric of profile of the sedimentary core taken in five stations in the small spreading ridge area in Mariana Trough shows that the effect of indicating its depositional fabric, sedimentary *** events, sedimentary interfaces and sediment composition as well as sedimentary dynamic environment by magnetic. Parameters is clearer than that by traditional method of analysis. The indication of sedimentary events can show its high resolution. The study on the Late Quaternary sedimentary events in this area shows that this area underwent four big events of sudden change in the Holocene epoch based on the sudden change of underflow direction and the position relationship between ash beds and erosion sediment layers. The sudden change of underflow direction is a believable evidence for judgement and study of sudden event within this area. The direction changes of its geomagnetic field show three morphotypes i. e. relatively stable type and non-stable type of oscillatory amplitude of magnetic inclination (Inc) which existed during the relatively stable period of amplitude of magnetic declination (Dnc). Anothertype is characterized by big amplitude of both inclination and *** space-time series of the three type mentioned above is a new way for forming a high-resolution stratigraphical timetable.

关键词： alimentary magnetic fabric underflow direction sedimentary events geomagnetic field direction

Relationship between magnetic fabric parameters and dynamic characteristics of deposits in different environments

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Chinese Science Bulletin 1998年第22期43卷 1917-1921页

作者： CHEN Qingqiang 1,3 , LI congxian\+1 and cong youzi\+2 1. Marine Geology Laboratory, Tongji University, Shanghai 200092, China 2. First Institute of Oceanography, State Oceanic Administration of China, Qingdao 266003, China 3. Guangzhou Institute of Marine Geology Laboratory Tongji University Shanghai China Guangzhou Institute of Geochemistry Chinese Academy of Sciences Guangzhou China First Institute of Oceanography State Oceanic Administration of China Qingdao China

Comparison of magnetic fabric parameters of deposits in different modern sedimentary environments indicates that values of \%P, F\% and \%L\% of eolian deposits are lower obviously than those of hydrogenic ones respectively. On relationship diagrams of magnetic fabric parameters, data points of eolian samples concentrated in limited area near origin of coordinates indicate that dynamic intensity is lower with less variation; while those of hydrogenic ones depart from origin of coordinates suggest higher intensity of sedimentary dynamics. Analyses of dynamic characteristics of different sedimentary environments indicate that values of magnetic fabric parameters of deposits are determined by dynamic types and characteristics of depositional processes. Magnetic fabric analyses of deposits are effective in determination of sedimentary environments.

关键词： magnetic fabric parameters sedimentary environment transporting medium.

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水成沉积与风成沉积及古土壤的磁组构特征

海洋地质与第四纪地质 1999年第2期19卷 85-94页

作者：张家强李从先丛友滋中国科学院地球化学研究所同济大学海洋地质开放实验室国家海洋局第一海洋研究所

晚第四纪水成沉积、风成沉积、古土壤等的磁组构研究表明，不同成因的沉积物具有明显不同的磁组构特征。一般地，水成沉积的体积磁化率Ｋ受物源和水动力因素控制，Ｐ和Ｆ均＞１．０２，ｑ＜０．５；风成沉积的Ｋ受物源控制，内陆黄土的... 详细信息

晚第四纪水成沉积、风成沉积、古土壤等的磁组构研究表明，不同成因的沉积物具有明显不同的磁组构特征。一般地，水成沉积的体积磁化率Ｋ受物源和水动力因素控制，Ｐ和Ｆ均＞１．０２，ｑ＜０．５；风成沉积的Ｋ受物源控制，内陆黄土的Ｋ明显高于沿海黄土及海岸风沙Ｋ，Ｐ和Ｆ均＜１．０２，ｑ的平均值＞０．５５；古土壤的Ｋ受母质沉积类型和成土环境的氧化还原条件控制，内陆古土壤的Ｋ偏高，沿海古土壤的Ｋ偏低，内陆古土壤的Ｋ远高于沿海古土壤的Ｋ，Ｐ和Ｆ均＜１．０２，ｑ的平均值在０．５左右。运用典型沉积的磁组构特征对比分析未知沉积物，可以得到未知沉积物的物源、沉积过程和环境信息。

关键词：水成沉积风成沉积古土壤磁组构沉积环境

Gamma oscillations and their role in orchestrating balance and communication following stroke

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Neural Regeneration Research 2025年第2期20卷 477-478页

作者： Montana Samantzis cong Wang Matilde Balbi Queensland Brain Institute The University of QueenslandBrisbaneQLDAustralia Engineering Research Centre of Traditional Chinese Medicine Intelligent Rehabilitation Ministry of EducationShanghaiChina

Induced brain oscillations in the gamma range have recently garnered attention due to their reported neuroprotective effects in the treatment of Alzheimer’s *** method differs from pharmacological approaches by tapping into the neuronal population dynamics that underlie the homeostatic processes in the brain that are crucial for the recovery of ***,induced gamma-range oscillations have been used to improve cerebral blood flow,motor function,and synaptic plasticity in a mouse model of focal stroke,highlighting the broad potential of recruiting intrinsic recovery processes for the treatment of neurological *** open questions,such as the frequency specificity of the benefits,will shed light on the intrinsic processes involved and allow clinicians to optimize recovery after stroke.

关键词： protective specificity Alzheimer

Sky location of massive black hole binaries in the foreground of Galactic white dwarf binaries

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Science China(Physics,Mechanics & Astronomy) 2025年第1期Mechanics & Astronomy) .卷 97-108页

作者： Pan Guo Hong-Bo Jin cong-Feng Qiao Yue-Liang Wu The International Centre for Theoretical Physics Asia-Pacific University of Chinese Academy of Sciences The School of Physical Sciences University of Chinese Academy of Sciences Institute for Frontiers in Astronomy and Astrophysics Beijing Normal University National Astronomical Observatories Chinese Academy of Sciences Institute of Theoretical Physics Chinese Academy of Sciences

For space-based gravitational wave （GW） detection,the main noise source for massive black hole binaries （MBHBs） is attributed to approximately 10～7double white dwarf binaries in the *** a GW source,the amplitude of the detector response,recorded by a space-based gravitational wave detector,exhibits a modulation effect with a year period when observing the source from various orbital *** the adverse conditions mentioned above,where there is a strong foreground noise and annual modulation in the signals,we employed the wavelet transform and the strong-amplitude relevant orbital position search methods,which allows the weak MBHB sources to achieve higher locating *** detail,for two MBHB sources of lower intensity,the precision of luminosity distance,represented by the ratio ?DL/DLat the 95%confidence level,is enhanced by factors of ～*** angular resolutions,denoted by??s,are enhanced by a factor of ～*** improvements increase the number of detectable GW sources,facilitate multi-messenger follow-up observations and provide constraints on the cosmological constant.

关键词： space-based gravitational wave detection gravitational waves massive black hole binaries

Constraints on what controls millennial-scale basin-wide denudation across mountain belts, Asia

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Science China Earth Sciences 2025年第1期68卷 74-93页

作者： Ye YANG Steven A.BINNIE Sheng XU cong-Qiang LIU Tibor J.DUNAI Institute of Surface-Earth System Science School of Earth System Science Tianjin University Institute of Geology and Mineralogy University of Cologne

The terrestrial cosmogenic nuclide dataset consisting of 123310Be measurements of fluvial sediment samples across the Asian mountain belts is used to constrain the influence of climate,tectonics and topography on Earth-surface denudation processes.10Be-derived basin-wide denudation rates were recalculated using a Monte Carlo simulation approach that relied on pixel-by-pixel production *** rates derived span four orders of magnitude,from 7.4±0.7 mm kyr-1（1σ;Central Tibetan Plateau） to 9,646744+777mm kyr-1（1σ;Southern Tibetan Plateau）,with a median of 186 mm *** our results with the traditional basin-wide production rate scaling model using a centroid coordinate and mean elevation,suggests that 96.6%of production rates will be underestimated using the latter method,especially for basins with a large *** bias between both methods reaches as large as 40%,caused by basin hypsometry and the nonlinear scaling of production rate with elevation and *** of the correlations between uniformly recalculated denudation rates and tectonics,climate,topography and rock lithology will facilitate the extrapolation of denudation rates in unknown basins using available *** the perspective of local scales,precipitation coupled with neotectonics-driven landslides is likely the most influential factor in subtropical Taiwan Island,while topography primarily constrains surface denudation rates in the eastern Tibetan Plateau within a narrow range of *** highland regions with glacier coverage,such as the Pamir,central and southern Tibetan Plateau high denudation rates are affected by glaciation,whereas lower precipitation and high erosion base level may limit river incision and evolving relief in the Central Tibetan *** contrast to local-scale findings highlighting a dominant factor constraining denudation rate,our large-scale quantitative analyses across the Asian mountain belts finds that （1） topographic metrics including

关键词： 10Be-derived denudation rate Climate change Tectonic uplift Topographic gradient Asian mountains

Enhancing Deepfake Detection:Proactive Forensics Techniques Using Digital Watermarking

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Computers, Materials & Continua 2025年第1期82卷 73-102页

作者： Zhimao Lai Saad Arif cong Feng Guangjun Liao Chuntao Wang School of Automation Guangdong University and TechnologyGuangzhou510006China School of Immigration Administration(Guangzhou) China People’s Police UniversityGuangzhou510663China Department of Mechanical Engineering College of EngineeringKing Faisal UniversityAl Ahsa31982Saudi Arabia Cyber Police Division Guangzhou Public Security BureauGuangzhou510030China School of Forensic Science and Technology Guangdong Police CollegeGuangzhou510320China College of Mathematics and Informatics South China Agricultural UniversityGuangzhou510642China

With the rapid advancement of visual generative models such as Generative Adversarial Networks(GANs)and stable Diffusion,the creation of highly realistic Deepfake through automated forgery has significantly *** paper examines the advancements inDeepfake detection and defense technologies,emphasizing the shift from passive detection methods to proactive digital watermarking *** detection methods,which involve extracting features from images or videos to identify forgeries,encounter challenges such as poor performance against unknown manipulation techniques and susceptibility to counter-forensic *** contrast,proactive digital watermarking techniques embed specificmarkers into images or videos,facilitating real-time detection and traceability,thereby providing a preemptive defense againstDeepfake *** offer a comprehensive analysis of digitalwatermarking-based forensic techniques,discussing their advantages over passivemethods and highlighting four key benefits:real-time detection,embedded defense,resistance to tampering,and provision of legal ***,the paper identifies gaps in the literature concerning proactive forensic techniques and suggests future research directions,including cross-domain watermarking and adaptive watermarking *** systematically classifying and comparing existing techniques,this review aims to contribute valuable insights for the development of more effective proactive defense strategies in Deepfake forensics.

关键词： Deepfake proactive forensics digital watermarking traceability detection techniques

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苏北陆区古潮成沙体沉积动力环境及物源

海洋学报 1998年第3期20卷 82-90页

作者：张家强李从先丛友滋同济大学海洋地质开放实验室国家海洋局第一海洋研究所

苏北陆区古潮成沙体和海域辐射沙洲共同构成了统一的苏北南黄海潮成沙洲体系。在众多钻孔资料和地质雷达探测基础上，重点对苏北陆区古潮成沙体进行了沉积磁组构和重矿物分析，证明古潮成沙体属海退层序，是在南、北两侧三角洲发育过程... 详细信息

苏北陆区古潮成沙体和海域辐射沙洲共同构成了统一的苏北南黄海潮成沙洲体系。在众多钻孔资料和地质雷达探测基础上，重点对苏北陆区古潮成沙体进行了沉积磁组构和重矿物分析，证明古潮成沙体属海退层序，是在南、北两侧三角洲发育过程中，以长江、黄河泥沙为主的沉积物质通过沿岸搬运进入早已存在的辐聚辐散潮流场后经潮流沉积和塑造形成的。早期沉积物质主要来自长江，晚期则主要为长江和黄河的联合供沙。认为苏北古潮成沙体是全新世中后期海陆相互作用的产物。

关键词：潮成沙体沉积动力环境物源沉积磁组构重矿物