期刊文献+
任意字段
题名或关键词
题名
关键词
摘要
作者
第一作者
机构
刊名
分类号
参考文献
作者简介
基金资助
栏目信息
共找到94,309篇文章
< 1 2 … 250 >
每页显示 20 50 100
已选0条
引用分析
参考文献
引证文献
 统计分析
检索结果
已选文献
显示方式：
Detailed oil-source correlation within the sequence and sedimentary framework in the Fushan Depression,Beibuwan Basin,South China Sea 认领 引用 被引量：2
1
作者 Xin Wang Mei-Jun Li +3 位作者 Yang Shi Hao Guo Bang Zeng Xi He 《Petroleum Science》 SCIE EI CAS CSCD 2025年第1期90-109,共20页
The Fushan Depression is one of the petroliferous depressions in the Beibuwan Basin,South China Sea.Previous studies have preliminarily explored the origin and source of crude oils in some areas of this depression.Nev... The Fushan Depression is one of the petroliferous depressions in the Beibuwan Basin,South China Sea.Previous studies have preliminarily explored the origin and source of crude oils in some areas of this depression.Nevertheless,no systematic investigations on the classification and origin of oils and hy-drocarbon migration processes have been made for the entire petroleum system in this depression,which has significantly hindered the hydrocarbon exploration in the region.A total of 32 mudstone and 58 oil samples from the Fushan Depression were analyzed to definite the detailed oil-source correlation within the sequence and sedimentary framework.The organic matter of third member of Paleogene Liushagang Formation(Els(3))source rocks,both deltaic and lacustrine mudstone,are algal-dominated with high abundance of C23tricyclic terpane and C304-methylsteranes.The deltaic source rocks occur-ring in the first member(Els1)and second member(Els2)of the Paleogene Liushagang Formation are characterized by high abundance of C19+20tricyclic terpane and oleanane,reflecting a more terrestrial plants contribution.While lacustrine source rocks of Els1and Els2display the reduced input of terrige-nous organic matter with relatively low abundance of C 19+20 tricyclic terpane and oleanane.Three types of oils were identified by their biomarker compositions in this study.Most of the oils discovered in the Huachang and Bailian Els1reservoir belong to group A and were derived from lacustrine source rocks of Els1and Els2.Group B oils are found within the Els1and Els2reservoirs,showing a close relation to the deltaic source rocks of Els1and Els2,respectively.Group C oils,occurring in the Els3 reservoirs,have a good affinity with the Els3 source rocks.The spatial distribution and accumulation of different groups of oils are mainly controlled by the sedimentary facies and specific structural conditions.The Els2reservoir in the Yong'an area belonging to Group B oil,are adjacent to the source kitchen and could be considered as the favorable exploration area in the future. 展开更多
关键词 Oil-source correlation Sequence stratigraphic framework Biomarkers Fushan depression South China Sea
暂未订购 下载PDF
Distribution and isotopic signature of 2-alkyl-1,3,4-trimethylbenzenes in the Lower Paleozoic source rocks and oils of Tarim Basin:Implications for the oil-source correlation 认领 引用 被引量：5
2
作者 Tao-Hua He Wen-Hao Li +7 位作者 Shuang-Fang Lu Er-Qiang Yang Tao-Tao Jing Jun-Feng Ying Peng-Fei Zhu Xiu-Zhe Wang Wen-Qing Pan Zhong-Hong Chen 《Petroleum Science》 SCIE CAS CSCD 2022年第6期2572-2582,共11页
Series of 2-alkyl-1,3,4-trimethylbenzenes(ATMBs)were detected in most of crude oils and source rocks collected from various strata and locations of the Tarim Basin.They appeared to have heavy carbon isotopic signatur... Series of 2-alkyl-1,3,4-trimethylbenzenes(ATMBs)were detected in most of crude oils and source rocks collected from various strata and locations of the Tarim Basin.They appeared to have heavy carbon isotopic signatures(δ13C,up to~-16‰)compared to those hydrocarbons from oxygenic phototrophic organisms,indicating that the unequivocal source of green sulfur bacteria(GSB)and photic zone euxinia(PZE)existed in the original environment.Considering the high paleoproductivity,the PZE may have enhanced the preservation of organic matter,which triggered the formation of extremely organic-rich source rocks with TOC up to 29.8%for the Lower Cambrian Yuertus Formation(€1y).The coexistence of ATMBs and the diagnostic products from secondary alterations(e.g.,abundant 25-norhopanes,thiadiamondoids,and diamondoids)indicated a stronger ability of anti-second-alterations.Combined with the results of quantitatively de-convoluting mixed oil,the oil-source correlation based on ATMBs from a large number of Lower Paleozoic samples of the Tarim Basin suggested that the abundant deep crude oil resources co ntained a dominant contribution(>50%)from the€1y source rocks.Therefore,the ATMBs,as diagnostic biomarkers indicating unequivocal precursors under special habitat conditions,might provide important insights for the exploration of deep Lower Paleozoic crude oils in the Tarim Basin. 展开更多
关键词 2-alkyl-1,3,4-trimethylbenzenes Carbon isotopes Deep lower paleozoic crude oils Thiadiamondoid Oil-source correlation Tarim Basin
暂未订购 下载PDF
Oil-source correlation and Paleozoic source rock analysis in the Siwa Basin,Western Desert:Insights from well-logs,Rock-Eval pyrolysis,and biomarker data 认领 引用 被引量：2
3
作者 Mohamed I.Abdel-Fattah Mohamed Reda +3 位作者 Mohamed Fathy Diaa A.Saadawi Fahad Alshehri Mohamed S.Ahmed 《Energy Geoscience》 EI 2024年第3期313-327,共15页
Understanding the origins of potential source rocks and unraveling the intricate connections between reservoir oils and their source formations in the Siwa Basin(Western Desert,Egypt)necessitate a thorough oil-source ... Understanding the origins of potential source rocks and unraveling the intricate connections between reservoir oils and their source formations in the Siwa Basin(Western Desert,Egypt)necessitate a thorough oil-source correlation investigation.This objective is achieved through a meticulous analysis of well-log responses,Rock-Eval pyrolysis,and biomarker data.The analysis of Total Organic Carbon across 31 samples representing Paleozoic formations in the Siwa A-1X well reveals a spectrum of organic richness ranging from 0.17 wt%to 2.04 wt%,thereby highlighting diverse levels of organic content and the presence of both Type II and Type III kerogen.Examination of the fingerprint characteristics of eight samples from the well suggests that the Dhiffah Formation comprises a blend of terrestrial and marine organic matter.Notably,a significant contribution from more oxidized residual organic matter and gas-prone Type III kerogen is observed.Contrarily,the Desouky and Zeitoun formations exhibit mixed organic matter indicative of a transitional environment,and thus featuring a pronounced marine influence within a more reducing setting,which is associated with Type II kerogen.Through analysis of five oil samples from different wells—SIWA L-1X,SIWA R-3X,SIWA D-1X,PTAH 5X,and PTAH 6X,it is evident that terrestrial organic matter,augmented by considerable marine input,was deposited in an oxidizing environment,and contains Type III kerogen.Geochemical scrutiny confirms the coexistence of mixed terrestrial organic matter within varying redox environments.Noteworthy is the uniformity of identified kerogen Types II and III across all samples,known to have potential for hydrocarbon generation.The discovery presented in this paper unveils captivating prospects concerning the genesis of oil in the Jurassic Safa reservoir,suggesting potential links to Paleozoic sources or even originating from the Safa Member itself.These revelations mark a substantial advancement in understanding source rock dynamics and their intricate relationship with reservoir oils within the Siwa Basin.By illuminating the processes of hydrocarbon genesis in the region,this study significantly enriches our knowledge base. 展开更多
关键词 Biomarker data Oil-source correlation Rock-Eval pyrolysis Source rocks Siwa Basin
暂未订购 下载PDF
Oil-source correlation of Lower-Triassic oil seepages in Ni'erguan village,Southern Guizhou Depression,China 认领 引用 被引量：1
4
作者 Fang Yuan Yuhong Liao +1 位作者 Yunxin Fang Ansong Geng 《Acta Geochimica》 EI CAS CSCD 2016年第1期50-63,共14页
There are abundant bitumens and oil seepages stored in vugs in a Lower-Triassic Daye formation(T_1d)marlite in Ni'erguan village in the Southern Guizhou Depression.However,the source of those oil seepages has not ... There are abundant bitumens and oil seepages stored in vugs in a Lower-Triassic Daye formation(T_1d)marlite in Ni'erguan village in the Southern Guizhou Depression.However,the source of those oil seepages has not been determined to date.Multiple suites of source rocks of different ages exist in the depression.Both the oil seepages and potential source rocks have undergone complicated secondary alterations,which have added to the difficulty of an oil-source correlation.For example,the main source rock,a Lower-Cambrian Niutitang Formation"(∈_1n)mudstone,is over mature,and other potential source rocks,both from the Permian and the Triassic,are still in the oil window.In addition,the T_1d oil seepages underwent a large amount of biodegradation.To minimize the influence of biodegradation and thermal maturation,special methods were employed in this oil-source correlation study.These methods included catalytic hydropyrolysis,to release covalently bound biomarkers from the over mature"kerogen of∈_1n mudstone,sequential extraction,to obtain chloroform bitumen A and chloroform bitumen C from the T_1d marlite,and anhydrous pyrolysis,to release pyrolysates from the kerogen of T_1d marlite.Using the methods above,the biomarkers and n-alkanes releasedfrom the oil samples and source rocks were analysed by GC–MS and GC-C-IRMS.The oil-source correlation indicated that the T_1d oil seepage primarily originated from"the∈_1n mudstone and was partially mixed with oil generated from the T_1d marlite.Furthermore,the seepage also demonstrated that the above methods were effective for the complicated oil-source correlation in the Southern Guizhou Depression. 展开更多
关键词 Oil seepage Biomarker Carbon isotopic composition Catalytic hydropyrolysis Oil-source correlation
暂未订购 下载PDF
The Occurrence of Oleananes in the Beibuwan Basin and Its Application to the Study of Maturity and Oil-Source Rock Correlation 认领 引用 被引量：11
5
作者 LI Meijun WANG Tieguan +4 位作者 LIU Ju ZHANG Meizhu LU Hong MA Qinglin GAO Lihui 《Acta Geologica Sinica(English Edition)》 SCIE CAS 2008年第3期585-595,共11页
The oleanane parameter, i.e., OP （oleananes/（oleananes＋C30hopanes）） in the two sedimentary columns of the Beibuwan Basin, South China Sea, can be used to delimit the top of oil generation window, with Ro （/%） o... The oleanane parameter, i.e., OP （oleananes/（oleananes＋C30hopanes）） in the two sedimentary columns of the Beibuwan Basin, South China Sea, can be used to delimit the top of oil generation window, with Ro （/%） of 0.53 in Well M1 and 0.55 in Wells H1/Hd1/Hd2, respectively. Comparing with vitrinite reflectance （Ro/%）, the OP features a dynamic range and can indicate the oil generation window more precisely. By using OP and other geochemical indices, the oil-source correlation is also conducted. It suggests that the oils in wells M1 and M2 are derived from the source rocks in situ. The mudstone in Huachang uplift is not the main source rocks for oils in this area, The OP is also a useful oil-source correlation parameter in some Tertiary lacustrine basins. 展开更多
关键词 oleanane parameter （OP） biomarker maturity oil-source correlation Fushan Depression
暂未订购 下载PDF
Quantitative Defect-Property Correlations in Ti3C2Tx MXenes via Precursor‑Controlled Defect Engineering 认领 引用
6
作者 Tufail Hassan Doyeon Lee +13 位作者 Shabbir Madad Naqvi Myungjae Kim Jung‑Min Oh Sang Woon Park Aamir Iqbal Soo Yeong Cho Zhiwang Hao Noushad Hussain Zubair Khalid Shakir Zaman Xiangmeng Kong Ki‑Min Roh Hanjung Kwon Chong Min Koo 《Nano-Micro Letters》 SCIE EI CAS CSCD 2026年第8期235-251,共17页
Defect engineering holds great promise for tailoring the multifunctional properties of MXenes.However,quantitative correlations between defect and material performance remain largely unexplored due to the lack of a re... Defect engineering holds great promise for tailoring the multifunctional properties of MXenes.However,quantitative correlations between defect and material performance remain largely unexplored due to the lack of a reliable strategy to precisely control defect densities.Here,we demonstrate that the defect density of Ti3C2Tx MXenes—including titanium and carbon vacancies,substitutional oxygen defects,and the associated lattice strain—is precisely controlled by adjusting carbon stoichiometry during TiC precursor synthesis and aluminum content during Ti3AlC2 MAX formation.The defect densities propagate from precursors to final MXenes,enabling the fabrication of a series of Ti3C2Tx MXenes with systematically controlled defect densities.This allows a quantitative correlation between defect density and multifunctional properties including electrical and thermal conductivities,infrared emissivity,electromagnetic shielding effectiveness,Joule heating performance,and oxidation stability.The defect-minimized Ti3C2Tx MXene exhibits outstanding performance,with an electrical conductivity of 26,000 S cm−1,thermal conductivity of 57 W m−1 K−1,electromagnetic shielding effectiveness of 90.5 dB at 10μm,Joule heating performance of 263℃ at 1.5 V,ultralow infrared emissivity of 0.05,and superior oxidation resistance(activation energy of 72 kJ mol−1).Furthermore,this work establishes a comprehensive quantitative framework linking defect structure to multifunctional performance and stability. 展开更多
关键词 MXenes Defect engineering Vacancies and substitutions defects Defect-property correlation Oxidation resistance
暂未订购 下载PDF
An extended overlay assessment model with process correlation analysis for sub-100-nm accuracy wafer bonding 认领 引用
7
作者 Rui Wang Sen Lu +1 位作者 Kaiming Yang Yu Zhu 《Journal of Semiconductors》 EI CAS CSCD 2026年第5期65-77,共13页
To address the demand for sub-100-nm overlay accuracy in wafer bonding for 3D integration,this study proposes an extended overlay assessment model integrating physical mechanisms and data-driven approaches,along with ... To address the demand for sub-100-nm overlay accuracy in wafer bonding for 3D integration,this study proposes an extended overlay assessment model integrating physical mechanisms and data-driven approaches,along with a correlation analysis methodology with process parameters.Rigid-body models inadequately characterize systematic deformations from crystalline anisotropy and process stresses.To overcome this,we construct an extended overlay model based on Zernike polynomials,incorporating physically meaningful terms for precise description of non-uniform wafer deformation.An innovative Zernike term selection strategy combining physics-guided pre-screening and AIC-optimized stepwise regression resolves overfitting/underfitting,enhancing generalizability and interpretability.Validation using patterned wafer geometry(PWG)data shows the model achieves R2>0.70 for both net bonding deformation and lithography-compensable components,demonstrating excellent deformation decomposition.Correlation analysis of multiple process experiments reveals strong correlations(|r|>0.85)between key process parameters(e.g.,peak bonding head force)and specific Zernike modes,providing evidence for suppressing detrimental deformations via process optimization.This research establishes a complete framework from theory to experimental verification and process traceability,laying a foundation for mechanism diagnosis,predictive compensation,and closed-loop control in high-precision wafer bonding. 展开更多
关键词 wafer bonding overlay assessment anisotropic deformation Zernike polynomials process correlation
暂未订购 下载PDF
The measurement of the energy correlations between two252Cf prompt fission neutrons 认领 引用
8
作者 Huai-Yong Bai Hang Li +8 位作者 Hong-Jun Zhang Cheng-Guo Pang Ming Su Zhong-Hua Xiong Ji Wen Fan Gao Chen-Guang Li Xiao-Dong Wang Li-Sheng Yang 《Nuclear Science and Techniques》 SCIE EI CAS CSCD 2026年第4期202-215,共14页
The energy correlations of prompt fission neutrons have not yet been considered in the related coincidence and multiplication measurement techniques.To measure and verify the energy correlations,an experiment was perf... The energy correlations of prompt fission neutrons have not yet been considered in the related coincidence and multiplication measurement techniques.To measure and verify the energy correlations,an experiment was performed with a total measurement duration of approximately 1200 h.In the experiment,eight CLYC detectors and sixteen EJ309 liquid scintillation detectors were utilized,and the fission moment was tagged with the measured fissionγ-rays.The relative ratios of the energy spectra of the neutrons correlated with different energy neutrons to the252Cf fission neutron energy spectra were obtained.The present results may be helpful for studying fission physics and nuclear technology applications. 展开更多
关键词 Energy correlations Prompt fission neutrons Energy spectrum Fissionγ-rays
暂未订购 下载PDF
Rapid inference of nonstationary broadband seismic wavefield based on ground-motion spatial correlation and equivalent group velocity 认领 引用
9
作者 Zhang Shiliang Ma Qiang +2 位作者 Wang Jiang Xie Quancai Tao Dongwang 《Earthquake Engineering and Engineering Vibration》 SCIE EI CSCD 2026年第2期279-299,共21页
Rapid inference of a seismic wavefield is essential for disaster assessment and emergency rescue.Interpolation methods based on observed strong motion recordings,supported by dense seismic networks,provide a computati... Rapid inference of a seismic wavefield is essential for disaster assessment and emergency rescue.Interpolation methods based on observed strong motion recordings,supported by dense seismic networks,provide a computationally efficient alternative to traditional numerical simulations.However,these purely mathematical approaches fail to account for the physical processes of source rupture and wave propagation,as well as the spatial correlation and nonstationarity of frequency content in ground motion,thereby lacking physical interpretability.This study presents a rapid seismic wavefield inference method that incorporates the spatial correlation and nonstationarity of ground motion.We introduce a spatial correlation factor into the inverse-proportional-weighted interpolation method to infer the ground-motion Fourier amplitude spectra(FAS)at un-instrumented sites,using the FAS of nearby observed recordings.Furthermore,we apply an equivalent group velocity model to derive the ground-motion phase spectra,which are combined with the interpolated FAS to generate nonstationary ground-motion time histories.Verification results from an actual earthquake case indicate that the inferred FAS within the 0.1-25.0 Hz frequency band and ground-motion intensity measures are generally consistent with observed values.This study modestly improves the accuracy of seismic wavefield interpolation and offers a mechanistic basis for conventional mathematical interpolation methods from the perspective of engineering seismology. 展开更多
关键词 earthquake emergency response spatial correlation frequency nonstationarity seismic wavefield interpolation
暂未订购 下载PDF
Ab initio density functional theory approach to warm dense hydrogen:From density response to electronic correlations 认领 引用 被引量：1
10
作者 Zhandos A.Moldabekov Xuecheng Shao +5 位作者 Hannah M.Bellenbaum Cheng Ma Wenhui Mi Sebastian Schwalbe Jan Vorberger Tobias Dornheim 《Matter and Radiation at Extremes》 SCIE EI CAS CSCD 2026年第2期14-20,共7页
Understanding the properties of warm dense hydrogen is of key importance for the modeling of compact astrophysical objects and to understand and further optimize inertial confinement fusion applications.The workhorse ... Understanding the properties of warm dense hydrogen is of key importance for the modeling of compact astrophysical objects and to understand and further optimize inertial confinement fusion applications.The workhorse of warm dense matter theory is thermal density functional theory(DFT),which,however,suffers from two limitations:(i)its accuracy can depend on the utilized exchange-correlation functional,which has to be approximated,and(ii)it is generally limited to single-electron properties such as the density distribution.Here,we present a new ansatz combining time-dependent DFT results for the dynamic structure factor See(q,ω)with static DFT results for the density response.This allows us to estimate the electron-electron static structure factor See(q)of warm dense hydrogen with high accuracy over a broad range of densities and temperatures.In addition to its value for the study of warm dense matter,our work opens up new avenues for the future study of electronic correlations exclusively within the framework of DFT for a host of applications. 展开更多
关键词 thermal density functional theory dft whichhoweversuffers understanding properties warm dense hydrogen thermal density functional theory understand further optimize inertial confinement fusion applicationsthe warm dense matter theory electronic correlations warm dense hydrogen density functional theory
暂未订购 下载PDF
Threefold-Hierarchical Transport of Highly Concentrated Aqueous Electrolyte Mediated by Environment-Reconstructed Ion Correlation Networks 认领 引用
11
作者 Qiang Wang Di Tian Zhiguo Qu 《Nano-Micro Letters》 SCIE EI CAS CSCD 2026年第7期326-348,共23页
Highly concentrated aqueous electrolytes(HCAEs)offer superior energy density and stability in energy conversion and storage than their diluted counterparts,attributed to enhanced ion transport and correlated ion struc... Highly concentrated aqueous electrolytes(HCAEs)offer superior energy density and stability in energy conversion and storage than their diluted counterparts,attributed to enhanced ion transport and correlated ion structures.However,their underlying structure-transport relationships remain poorly understood in wide-temperature and nanoconfinement environments.This study captures electrolyte structure and transport fingerprints shaped by environmental factors,by combining experimental characterization with first-principles molecular simulations at sub-nanometer resolution.It is revealed that ultrahigh concentration changes electrolyte electronic states and forms ion correlation networks with extensive aggregates.These alterations reduce free water content and hydrogen bond network connectivity,resulting in notable deviation from the Nernst-Einstein(NE)-predicted conductivity.This deviation is thermal-alleviated by weakening ion correlations.Nanoconfined interfaces create oscillatory-decaying distribution and heterogeneous orientation in HCAE constituents,resulting in redrawn ion correlation networks and localized NE deviations.Such transport behaviors are further modulated by synergistic thermal-interfacial constraints.Taking NE deviations as descriptors,HCAE transport,mediated by environment-reconstructed ion correlation networks,is then summarized to present threefold-hierarchical variations due to ion concentration,thermal effect,and confinement extent.This threefold-hierarchical framework is transferable among diverse electrolytes,offering a localized insight for electrolyte evaluation in electrochemical energy devices. 展开更多
关键词 Ion-ion correlation Hydrogen bond network connectivity Interfacial water structure Heterogeneous aggregation Nanoconfinement
暂未订购 下载PDF
Quantitative correlation between solidification front steel speed and solidified shell surface temperature in a slab continuous casting mold 认领 引用
12
作者 Wen-Jie Rong Yan Jiang +3 位作者 Xin-Yi Li Zhong-Qiu Liu Bao-Kuan Li Cheng-Jun Liu 《Journal of Iron and Steel Research International》 SCIE EI CSCD 2026年第4期29-42,共14页
The flow of molten steel at the solidification front in a continuous casting mold has a significant impact on slab quality.However,due to the high temperature and opacity of the mold,direct velocity measurements are e... The flow of molten steel at the solidification front in a continuous casting mold has a significant impact on slab quality.However,due to the high temperature and opacity of the mold,direct velocity measurements are extremely challenging.The functional relationship between flow speed at the solidification front and the temperature of the outer surface of the solidified shell is derived heat conduction equations.Subsequently,a coupled flow-heat transfer-solidification model for the mold is developed to numerically determine the flow speed and temperature distribution.Based on thermocouple installation positions and the impingement point location of the molten steel jet on the narrow face of the mold,33 sampling points are selected along both the narrow/wide face centerline and corresponding heights at the solidification front.Finally,the flow speed at the solidification front is fitted as a function of the outer surface temperature of solidified shell and the distance from the meniscus,with detailed analysis of its distribution characteristics. 展开更多
关键词 Continuous casting mold Solidification front steel velocity Solidified shell surface temperature Heat transfer Quantitative correlation
暂未订购 下载PDF
Postoperative anxiety-depression in patients with spinal cord injury:Correlations with injury severity and sleep quality 认领 引用
13
作者 Zhi-Sen Tian Meng-Jie Yan +3 位作者 Hang Wang Yi-Ke Zhang Xian-Ji Song Kun-Chi Zhao 《World Journal of Psychiatry》 SCIE 2026年第6期308-317,共10页
BACKGROUND Patients with spinal cord injury(SCI)commonly experience varying degrees of anxiety,depression,and sleep disturbances,which may hinder postoperative recovery.AIM To examine the association between postopera... BACKGROUND Patients with spinal cord injury(SCI)commonly experience varying degrees of anxiety,depression,and sleep disturbances,which may hinder postoperative recovery.AIM To examine the association between postoperative anxiety-depression symptoms,injury severity,and sleep quality in patients with SCI.METHODS A total of 149 patients who underwent surgical treatment for SCI from December 2021 to December 2024 were enrolled.At three months postoperatively,all participants were assessed using the Hamilton Anxiety Scale(HAMA)and Hamilton Depression Scale(HAMD)for psychological status,the American Spinal Injury Association(ASIA)Impairment Scale for injury severity,and the Pittsburgh Sleep Quality Index(PSQI)for sleep quality.Correlation analyses were conducted to evaluate relationships among postoperative anxiety,depression,SCI severity,and sleep disturbances,and regression analyses were used to identify predictors of psychological symptoms.RESULTS Mean HAMA and HAMD scores were 12.00(9.00,14.00)and 14.00(10.00,16.50),respectively,indicating mild anxiety(34.90%)and probable depression(24.83%).Higher ASIA grades were associated with elevated HAMA and HAMD scores.The mean global PSQI score was 12.00(11.00,14.00),with sleep duration,sleep efficiency,and sleep latency being the most affected domains(scores>1).HAMA and HAMD scores showed significant positive correlations with ASIA grades and PSQI scores.Multivariate analysis identified age≥60 years,male sex,disease duration≥12 months,educational level below high school,ASIA grades A-B,and PSQI score≥13 as independent risk factors for postoperative anxiety and depression.CONCLUSION Postoperative anxiety and depression are positively associated with SCI severity and impaired sleep quality management in patients with SCI. 展开更多
关键词 Spinal cord injury Anxiety Depression American Spinal Injury Association Impairment Scale Sleep quality Correlation analysis
暂未订购 下载PDF
Octupole correlations of the Kπ=5/2+ground-state band in229Th 认领 引用
14
作者 Yuan-Yuan Wang Peng-Wei Zhao 《Chinese Physics B》 SCIE EI CAS CSCD 2026年第2期156-161,共6页
The octupole correlations of the Kπ=5/2+ground state and the rotational spectrum built on it in229Th are studied using the microscopic relativistic density functional theory on a three-dimensional lattice sp... The octupole correlations of the Kπ=5/2+ground state and the rotational spectrum built on it in229Th are studied using the microscopic relativistic density functional theory on a three-dimensional lattice space and the reflection-asymmetric triaxial particle rotor model.It is found that229Th has a ground state with static axial octupole and quadrupole deformations.The occurrence of octupole correlations,driven by the octupole deformation,is analyzed through the evolution of single-particle levels around the Fermi surface.The experimental energy spectrum and the electromagnetic transition probabilities,including B(E2)and B(M1),are reasonably well reproduced. 展开更多
关键词 octupole correlation relativistic density functional theory reflection-asymmetric triaxial particle rotor model rotational spectrum
暂未订购 下载PDF
Determination of focal depths for the 2024 M 7.3 Hualien offshore and 2025 M 6.2 Tainan earthquakes in Taiwan,China:An enhanced method based on sPn phase and waveform cross-correlation techniques 认领 引用
15
作者 Huifang Chen Binhua Lin +2 位作者 Tairan Xu Yanming Zhang Yuanhong Yang 《Earthquake Research Advances》 CAS CSCD 2026年第1期17-24,共8页
This study proposes a method for determining earthquake focal depths by combining the sPn phase with the waveform cross-correlation technique,based on waveform data recorded by the Fujian Seismic Network from the 2024... This study proposes a method for determining earthquake focal depths by combining the sPn phase with the waveform cross-correlation technique,based on waveform data recorded by the Fujian Seismic Network from the 2024 M 7.3 Hualien offshore earthquake and the 2025 M 6.2 Tainan earthquake.The Pn phase onset was precisely aligned using waveform cross-correlation,and the arrival time difference(Δt)between the sPn and Pn phases was extracted via a sliding time-window correlation method.The focal depths were derived using a layered velocity model for the Taiwan region.Results show that the calculated focal depth for the Hualien earthquake is 23.1 km(Δt=6.9 s),with a relative error of 2.7%compared to the official result(22.5 km)from the Central Weather Administration of Taiwan.For the Tainan earthquake,the depth is 17.9 km(Δt=6.1 s),with a relative error of 13.3%.In this study,we show that a cross-correlation threshold of 0.8 and a bandpass filtering of 0.1–0.3 Hz are efficient to suppress noise and significantly improve depth accuracy for shallow earthquakes with depth<30 km.Compared to traditional travel-time location methods,this approach exhibits superior noise resistance and computational efficiency.Future work will focus on optimizing 3D velocity structures,integrating multiple phases,and applying deep learning techniques such as convolutional neural networks,aiming to improve the results in a more reliable and automatic way,and to provide efficient support on earthquake emergency response. 展开更多
关键词 M 7.3 Hualien earthquake M 6.2 Tainan earthquake sPn phase Focal depth Waveform cross-correlation Sliding time-window correlation method
暂未订购 下载PDF
A Dynamic Correlation-Information-Fusion-Based Spatiotemporal Network for Traffic Flow Forecasting 认领 引用
16
作者 Dawen Xia Zhan Lin +4 位作者 Xingyan Wang Ruixi Huang Jinhui Hu Yang Hu Huaqing Li 《CAAI Transactions on Intelligence Technology》 SCIE EI CSCD 2026年第3期859-874,共16页
Traffic Flow Forecasting(TFF)is a foundational task in the development of Intelligent Transport Systems(ITSs).The primary challenge is to undertake a comprehensive exploration of the intrinsic dynamic spatiotemporal c... Traffic Flow Forecasting(TFF)is a foundational task in the development of Intelligent Transport Systems(ITSs).The primary challenge is to undertake a comprehensive exploration of the intrinsic dynamic spatiotemporal correlations of the road network,unveiling the long-term evolutionary traffic trends.Furthermore,most existing methods often solely depend on the single traffic condition and neglect the enhancement of correlated features collected from traffic sensors in prediction.To this end,we propose a dynamic correlation-information-fusion-based(DCIF)spatiotemporal network for TFF,which models the spatiotemporal correlations of road networks,thereby effectively capturing dynamically changing characteristics.Specifically,a spatiotemporal feature enhancement(STFE)mechanism is employed to capture the directional and location-aware characteristics of traffic flow,thereby enhancing the representation of traffic flow and the capability of spatiotemporal feature extraction.Then,a gated attention unit(GAU)is constructed to meticulously extract the deep dynamic trends inherent within traffic data.Finally,a dynamic feature matrix(DFM)is formulated,incorporating spatial graph convolution to provide comprehensive semantic contextual information.The DFM captures the dynamic topology of the deeper feature network in real time by fusing spatial node information and traffic speed features as correlation information.Extensive experiments demonstrate that DCIF significantly outperforms other baselines in prediction accuracy,thereby further substantiating its validity and reliability in TFF. 展开更多
关键词 dynamic feature matrix dynamic spatiotemporal correlations gated attention unit multi‐source information fusion spatiotemporal feature enhancement mechanism traffic flow forecasting
暂未订购 下载PDF
From Shallow to Deep:A Novel Correlation Network Representation Regression Framework for Modeling and Monitoring MIQ-Driven Blast Furnace Ironmaking Processes 认领 引用
17
作者 Siwei Lou Chunjie Yang +3 位作者 Zhe Liu Hanwen Zhang Chao Liu Ping Wu 《IEEE/CAA Journal of Automatica Sinica》 SCIE EI CSCD 2026年第2期281-299,共19页
Ironmaking process(IP)is indispensable to modern iron and steel industry,where real-time monitoring is crucial for achieving high molten iron quality(MIQ)with low energy consumption.While neural network-based models s... Ironmaking process(IP)is indispensable to modern iron and steel industry,where real-time monitoring is crucial for achieving high molten iron quality(MIQ)with low energy consumption.While neural network-based models show some promising results,they are generally limited by non-negligible drawbacks such as interpretability issues of feature learning.To address these issues,we propose a novel concept based on the shallow-to-deep correlation network representation regression(Sh-to-De CNRR).Our approach,shallow correlation network representation regression(ShCNRR),combines neural network and canonical correlation analysis thoughts to generate explainable features via shallow correlation network representation(CNR).A twin inverse network is then derived to obtain the explicit model output,leveraging the shallow CNR.To capture deeper nonlinear information,we extend ShCNRR into a hierarchical deep correlation network representation regression(DeCNRR)model that features stacked neural networks,enabling us to learn deeper CNR from process data.The feasibility and advantages of our proposals are validated by theoretical derivations and practical IP cases,which contain one MIQ regression and three MIQ-related fault detection tasks.The results reveal that highly fused statistical and neural network models yield superior monitoring performance compared to current state-of-the-art models,while statistical tests verify the convincing feature mining. 展开更多
关键词 Canonical correlation analysis(CCA) ironmaking process(IP) molten iron quality(MIQ) neural network(NN) process monitoring
暂未订购 下载PDF
Probing QCD confinement with spin-spin correlation in proton-proton collisions 认领 引用
18
作者 Zuo-Tang Liang Qing-Hua Xu Jin-Long Zhang 《Nuclear Science and Techniques》 SCIE EI CAS CSCD 2026年第5期1-4,共4页
An important feature of quantum chromodynamics(QCD)is that the strong force grows as the distance between partons increases,which confines partons into hadrons,commonly known as QCD confinement.Perturbative QCD(pQCD)d... An important feature of quantum chromodynamics(QCD)is that the strong force grows as the distance between partons increases,which confines partons into hadrons,commonly known as QCD confinement.Perturbative QCD(pQCD)does not work at large distance,such as the length scale of a hadron,which is the regime of non-perturbative QCD.The detailed QCD mechanisms through which confinement occurs from partons to hadrons(usually known as hadronization),and how it manifests itself in partonic structure of hadrons(usually known as parton distribution),remain unresolved puzzles of first-principle QCD calculations. 展开更多
关键词 spin spin correlation quantum chromodynamics qcd partons QCD confinement hadrons non perturbative QCD strong force proton proton collisions
暂未订购 下载PDF
Revisiting the Brazilian disc test with split Hopkinson pressure bar by high-speed digital image correlation analysis 认领 引用
19
作者 Xiaofeng Li Haibo Li Giovanni Grasselli 《Journal of Rock Mechanics and Geotechnical Engineering》 SCIE CSCD 2026年第5期3499-3511,共13页
The ISRM-suggested Brazilian disc(BD)test using split Hopkinson pressure bar(SHPB)for dynamic rock tensile strength requires central crack initiation and stress equilibrium.This study aims to re-evaluate the critical ... The ISRM-suggested Brazilian disc(BD)test using split Hopkinson pressure bar(SHPB)for dynamic rock tensile strength requires central crack initiation and stress equilibrium.This study aims to re-evaluate the critical strain rate,ensuring a valid dynamic Brazilian disc test,and to analyse the reliable dynamic tensile behaviour of granite using high-speed digital image correlation(DIC).The comparison between the measured strain obtained through high-speed DIC analysis and the strain gauge allowed for determining the optimal subset parameters used to obtain the real-time deformation field and the stress-strain curve from DIC data.Crack initiation,crack velocity,and failure process are studied to reveal the rate dependence of granites.A unified dynamic increase factor(DIF)model is proposed for the tensile strength of rocks,and the reason for the sudden drop in DIF for high strain rates is discussed.The results reveal that the upper limit of the valid strain rate,which ensures the validity of the ISRM-suggested dynamic BD test,is co-determined by the conditions of stress equilibrium and crack initiation from the centre of the disc.At higher strain rates(75 s⁻¹),BD test results fail to capture the actual tensile behaviour of rocks,and the potential factors influencing the critical valid strain rate(CVSr),such as sample radius and boundary crack length,should also be considered. 展开更多
关键词 High-speed digital image correlation(DIC) Brazilian disc test Critical valid strain rate Rate dependency Granitic rock
暂未订购 下载PDF
Correlation Enhanced Resistance Hysteresis Near Half Filling in MoS2/WSe2 Heterobilayer 认领 引用
20
作者 Yong Chen Weikang Zhang +11 位作者 Meizhen Huang Shengling Xiang Zishu Zhou Yaqi Ma Chenxuan Lou Haoxi Ji Aoqian Zhang Yifei Jin Liheng An Zefei Wu Chun Cheng Ning Wang 《Chinese Physics Letters》 SCIE EI CAS CSCD 2026年第7期144-149,I0118-I0130,共6页
Ferroelectricity,typically arising from ionic displacements in noncentrosymmetric lattices,enables applications in memory devices and sensors.Recent advances in two-dimensional materials and van der Waals heterostruct... Ferroelectricity,typically arising from ionic displacements in noncentrosymmetric lattices,enables applications in memory devices and sensors.Recent advances in two-dimensional materials and van der Waals heterostructures have revealed novel ferroelectric phenome-na,including sliding ferroelectricity and correlation-driven ferroelectricity in moirésuperlattices.In this work,we fabricate and study a MoS2/WSe2 moirésuperlattice device exhibiting a high field-effect mobility of 17650 cm2·V−1·s−1.Electrical transport measurements reveal correlated insulating states accompanied by a prominent and reproducible resistance hysteresis near half-filling.Temperature and displacement field dependence further confirms the correlation-enhanced nature of the hysteresis.Our analysis suggests that displace-ment field-induced metal-to-insulator transition at correlated insulating state coupled with interfacial dipoles enables the observed resistance hysteresis.These results establish correlation enhanced resistance hysteresis near half-filling in a MoS2/WSe2 heterobilayer,offering opportunities for exploring emergent quantum phases and device functionalities. 展开更多
关键词 moir superlattice device half filling correlation enhanced resistance hysteresis van der waals heterostructures memory devices ferroelectricity ionic displacements MOS WSe heterobilayer
暂未订购 下载PDF
已选0条
引用分析
参考文献
引证文献
 统计分析
检索结果
已选文献
上一页 1 2 … 250 下一页 到第 页
在线咨询 使用帮助 返回顶部 意见反馈