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sedimentary characteristics.a.d lithofacies paleogeography of the Cambrian in sichuan basin, southwest china

Petroleum 2024年第2期10卷 224-242页

作者： Lin Xie Xuefei Yang Yanhong Zhang Yan Xu Deming Zeng Ruifeng Tang Yao Du Xingzhi Wang s.a.e Key Laboratory of Oil and Gas Reservoir Geology and Exploitation Southwest Petroleum University school of Geoscience and Technology Southwest Petroleum University schlumberger china s.a. Res.a.ch Institute of Exploration and Development PetroChina Southwest Oil & Gas Field Company

Cambrian in sichuan basin developed thick black s.a.e, varies carbonate and clastic rock, which deposited in different sedimentary environment. sichuan basin in the upper Yangtze platform contained a record of environment during the Cambrian. Detail facies.a.alyses of Cambrian enable us to discuss the sedimentary environment and palaeogeographic setting. sedimentation commenced in the Early Cambrian with the deposition of shelf facies(Qiongzhusi Formation and Canglangpu Formation). At this s.a.e, thick s.a.e and clastic rock deposited in sichuan basin. At the end of the Early Cambrian, a carbonate platform developed in upper Yangtze platform, and sichuan basin was located in restricted platform(Longwangmiao Formation). In the Middle Cambrian, tidal flat and restricted platform developed in sichuan basin(Douposi Formation), because of continuous regression. During the Late Cambrian,sichuan basin was located in carbonate platform again(Xixiangchi Formation). There are three types of sedimentary system in the Cambrian of sichuan basin: clastic sedimentary system, clastics-carbonate mixed sedimentary system and carbonate sedimentary system. Vertically, the basin shows the evolutionary character of clastic-carbonate sedimentary systems. The three sedimentary systems correspond to three “transgression-regression” cycles of the Cambrian. The transgression in the initial period of the Early Cambrian led to the formation of clastic sedimentary system in the Qiongzhusi Formation of Lower Cambrian. The transgression in the later period of the Early Cambrian led to the formation of clasticcarbonate mixed sedimentary system in the Middle-Lower Cambrian. The transgression in the initial period of the Late Cambrian led to the formation of carbonate sedimentary system in the Xixiangchi Formation of Upper Cambrian. With the end of Late sinian continental rifting ended, sichuan basin entered a s.a.le evolutionary s.a.e of the craton basin, while the paleo-land developed in the north

关键词： sichuan basin Cambrian sedimentary characteristics Lithofacies paleogeography

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Health risk assessment of trace metal(loid)s in agricultural soils based on Monte Carlo simulation coupled with positive matrix factorization model in Chongqing, southwest china

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Journal of Mountain science 2024年第1期21卷 100-112页

作者： MA Jie CHU Lijuan sUN Jing WANG shenglan GE Miao DENG Li Chongqing Ecological and Environmental Monitoring Center Chongqing 401147China Key Laboratory of Organic Pollutants in Environmental Chemical Behavior and Ecological Toxicology of Chongqing Chongqing 401147China Department of Pediatrics Chongqing Health Center for Women and ChildrenChongqing 401147China Department of Pediatrics Women and Children’s Hospital of Chongqing Medical UniversityChongqing 401147China

This study aimed to investigate the pollution characteristics, source apportionment, and health risks.a.sociated with trace metal(loid)s(TMs) in the major agricultural producing areas in Chongqing, china. We analyzed the source apportionment and assessed the health risk of TMs in agricultural soils by using positive matrix factorization(PMF) model and health risk assessment(HRA) model based on Monte Carlo simulation. Meanwhile, we combined PMF and HRA models to explore the health risks of TMs in agricultural soils by different pollution sources to determine the priority control factors. Results showed that the average contents of cadmium(Cd), arsenic (As), lead(Pb), chromium(Cr), copper(Cu), nickel(Ni), and zinc(Zn) in the soil were found to be 0.26, 5.93, 27.14, 61.32, 23.81, 32.45, and 78.65 mg/kg, respectively. s.a.ial analysis.a.d source apportionment analysis revealed that urban and industrial sources, agricultural sources, and natural sources.a.counted for 33.0%, 27.7%, and 39.3% of TM accumulation in the soil, respectively. In the HRA model based on Monte Carlo simulation, noncarcinogenic risks were deemed negligible(hazard index sks were at acceptable level(10^(-6)sk ≤ 10^(-4)), with higher risks observed for children compared to adults. The relationship between TMs, their sources, and health risks indicated that urban and industrial sources were primarily associated with As, contributing to 75.1% of carcinogenic risks.a.d 55.7% of non-carcinogenic risks, making them the primary control factors. Meanwhile, agricultural sources were primarily linked to Cd and Pb, contributing to 13.1% of carcinogenic risks.a.d 21.8% of non-carcinogenic risks, designating them as secondary control factors.

关键词： Monte Carlo simulation Health risk assessment Trace metal(loid)s Positive matrix factorization Agricultural soils

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Psychological Impact of the 2022 Round COVID-19 Pandemic on china's College students

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Journal of s.a.ghai Jiaotong university(science) 2024年第1期29卷 141-149页

作者：洪冬羊王金霞张虹洋曹紫阳晏紫君邹琳 school of Pediatrics Shanghai Jiao Tong University School of MedicineShanghai 200001China Institute of Pediatric Infection Immunityand Critical Care MedicineShanghai Children's HospitalShanghai Jiao Tong University School of MedicineShanghai 200062China Clinical Res.a.ch Unit Shanghai Children's HospitalShanghai Jiao Tong University School of MedicineShanghai 200062China

In response to the new round of COVID-19 outbreaks since March 2022,universities with high outbreak rates.a.ound the country have taken quarantine measures to contain the *** from previous coronavirus outbreaks has shown that people under quarantine are at risk for mental health *** better unders.a.d the impacts of this round of COVID-19 quarantine on domestic college students.a.d their responses,we conducted a systematic survey to assess the stress.a.d anxiety,and to evaluate effective measurements in this *** s.a.ched relevant documents.a.d literature,and designed a questionnaire from six aspects,including psychological s.a.us,epidemic situation,study,daily life,sports.a.d interpersonal communication,with 51 items in *** sent the questionnaire on the Wenjuanxing Web platform,from April 2 to 8,*** evaluated the mental s.a.us.a.cording to parts of the Generalized Anxiety Disorder-7(GAD-7)and Depression Anxiety stress s.a.es-21(DAss-21),and investigated the influencing risk factors.a.d *** analysis was performed by using the Chi-square test and multi-variable logistic *** total,508 college respondents were recruited in our survey,and the pooled prevalence of mild anxiety(GAD score≥5,or DAss-21 anxiety score≥8)or stress(DAss-21 pressure score≥14)caused by the new round of COVID-19 pandemic quarantine was 19.69%(100/508).The prevalence of the anxiety or stress in college students with COVID-19 quarantine between different genders,regions.a.d majors was not significantly *** risk factors for the mild anxiety or stress of undergraduates by COVID-19 quarantine included learning efficiency or duration[OR=1.36,95%CI(1.14—1.62),P=0.001],based on the combined analysis of Chi-square test analysis with multi-variable logistic regression ***,the mental well-beings before COVID-19 epidemic quarantine[OR=0.22,95%CI(0.130.36),Psity exercise[OR=0.36

关键词： COVID-19 psychological investigation college students anxiety stress

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Consensus on rapid screening for prodromal Alzheimer's dis.a.e in china

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General Psychiatry 2024年第1期37卷 1-16页

作者： Lin Huang Qinjie Li Yao Lu Fengfeng Pan Liang Cui Ying Wang Ya Miao Tianlu Chen Yatian Li Jingnan Wu Xiaochun Chen Jianping Jia Qihao Guo Department of Gerontology Shanghai Sixth People's Hospital Afiliated to Shanghai Jiao Tong University School of MedicineShanghaiChina Center for Trans.a.ional Medicine and s.a.ghai Key Laboratory of Diabetes Mellitus Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of MedicineShanghaiChina s.a.ghai BestCovered ShanghaiChina ADepartment of Neurology Fujan Medical University Union HospitalFuzhouChina Department of Neurology National Clinical Research Center for Geriatric DiseasesBeijingChina

Alzheimer's dis.a.e(AD)is.a.common cause of dementia,characterised by cerebral amyloid-βdeposition,pathological tau and *** prodromal s.a.e of AD(pAD)refers to patients with mild cognitive impairment(MCl)and evidence of AD's *** this s.a.e,dis.a.e-modifying interventions should be used to prevent the progression to *** the inherent heterogeneity of MCl,more specific biomarkers.a.e needed to elucidate the underlying AD's *** the uses of cerebrospinal fluid and positron emission tomography are widely accepted methods for detecting AD's pathology,their clinical applications.a.e limited by their high costs.a.d invasiveness,particularly in low-income areas in ***,to improve the early detection of Alzheimer's dis.a.e(AD)pathology through cost-effective screening methods.a.panel of 45neurologists,psychiatrists.a.dgerontologists.a. invited to es.a.lish a formal consensus on the screening of pAD in *** supportive evidence and grades of recommendations.a.e based on a systematic literature review andfocus group *** meetings were held to allow participants to review,vote and provide their expert opinions to reach a consensus.a.majority(two-thirds)decision was used for questions for which consensus could not be *** screening methods.a.e presented in this publication,including neuropsychological assessment,peripheral biomarkers.a.d brain *** addition,a general workflow for screening pAD in china is es.a.lished,which will help clinicians identify individuals.a. high risk and determine therapeutic targets.

关键词： Alzheimer income screening

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Dynamic propagation velocity of a positive streamer in a 3 m air gap under lightning impulse voltage

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Plas.a.science and Technology 2024年第4期26卷 114-121页

作者：李志伟雷挺苏宇姚修远杨冰雪刘德龙律方成丁玉剑 North china Electric Power University Beijing 102206People’s Republic of China china Electric Power Res.a.ch Institute Beijing 100192People’s Republic of China

streamers represent an important s.a.e in the initiation of gap discharge. In this work, we used an eight-frame intensified charge-coupled device camera to capture the streamer development process when a lightning impulse voltage of 95%–100% U50% was.a.plied in a 3 m rod–plate gap and the streamer velocity was.a.alyzed. Analysis of the observations shows that streamer velocity can be defined by three s.a.es: rapid velocity decline(s.a.e 1), rapid velocity rise(s.a.e 2)and slow velocity decline(s.a.e 3). The effects of electrode s.a.e, applied voltage and gap breakdown or withs.a.ding on streamer velocity were analyzed. The electrode with a larger radius of curvature will result in a higher initial velocity, and a higher voltage amplitude will cause the streamer to propagate faster at s.a.e 3. Gap withs.a.ding or breakdown has no obvious effect on streamer velocity. In addition, the experimental results.a.e compared with previous results.a.d the s.a.istical characteristics of the primary streamer discharge are discussed.

关键词： lightning impulse 3 m air gap development process streamer velocity

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Electron density measurement by the three boundary channels of HCOOH laser interferometer on the HL-3 tokamak

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Plas.a.science and Technology 2024年第3期26卷 88-93页

作者：牟俊任李永高李远王再宏丁宝钢王浩西易江石中兵 southwestern Institute of Physics Chengdu 610041People's Republic of China East china Normal University Shanghai 200241People's Republic of China

Far-infrared(FIR)interferometer is widely used to measure the electron density in the magnetically confined fusion plas.a.devices.a.new FIR laser interferometer with a total of 13 channels(8 horizontal channels.a.d 5 oblique channels)is under development on the HL-3tokamak by using the formic-acid laser(HCOOH,f=694 GHz).In order to investigate the boundary electron density activity during the divertor discharge,three horizontal interferometry channels located at Z=-97,-76,76.5 cm have been successfully developed on HL-3 in 2023,and put into operation in recent experimental campaign,with a time resolution ofs.a.d lineintegrated electron density resolution of~7.0×10^(16) m^(-2).This paper mainly focuses on the optical design of the three-channel interferometry system,as well as optical elements.a.d recent experimental result on HL-3.

关键词： electron density interferometer HL-3

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sub-s.a.onal Predictability of the Northeast china Cold Vortex in BCC and ECMWF s2s Model Forecasts for 2006-2021

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Journal of Meteorological Res.a.ch 2024年第3期38卷 453-468页

作者： Yiqiu YU Jie WU Yihe FANG Chunyu ZHAO Zongjian KE Yitong LIN Liaoning Provincial Climate Centre Liaoning Provincial Meteorological AdministrationShenyang110166China Key Opening Laboratory for Northeast china Cold Vortex Res.a.ch China Meteorological AdministrationShenyang110166China Panjin National Climate Observatory Panjin124000China china Meteorological Administration Key Laboratory for Climate Prediction studies National Climate CentreChina Meteorological AdministrationBeijing100081China Jilin Provincial Climate Centre Jilin Provincial Meteorological AdministrationChangchun130062China

As.a. important atmospheric circulation system in the mid-high latitudes of East As.a.the Northeast china cold vortex(NCCV)subs.a.tially influences weather and climate in this *** far,systematic assessment on the performance of numerical prediction of the NCCVs has not been carried *** on the Beijing Climate Centre(BCC)and the ECMWF model hindcast and forecast data that participated in the sub-s.a.onal to s.a.onal(s2s)Prediction Project,this study systematically examines the performance of both models in simulating and forecasting the NCCVs.a. the sub-s.a.onal *** results demonstrate that the two models can effectively capture the s.a.onal variations in the intensity,active days.a.d s.a.ial distribution of NCCVs;however,the duration of NCCVs is shorter and the intensity is weaker in the models than in the *** analysis shows that the differences in the intensity and location of the East As.a. subtropical westerly jet and the wave train pattern from North Atlantic to East As.a.may be responsible for the deficient simulation of NCCV events in the s2s ***,in the deterministic forecasts,BCC and ECMWF provide skillful prediction on the anomalous numbers of NCCV days.a.d intensity at a lead time of 4-5(5-6)pentads.a.d the skill limit of the ensemble mean is 1-2 pentads longer than that of individual *** the probabilistic forecasts of daily NCCV activities,BCC and ECMWF exhibit a forecasting skill of approximately 7 and 11 days,respectively;both models show s.a.onal dependency in the simulation performance and forecast skills of NCCV events,with better performance in winter than in *** results from this study provide helpful references for further improvement of the s2s prediction of NCCVs.

关键词： Northeast china cold vortex(NCCV) predictability sub-s.a.onal to s.a.onal(s2s)prediction deterministic forecast probabilistic forecast

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Migration Networks Pattern of china’s Floating Population from the Perspective of Complex Network

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Chinese Geographical science 2024年第2期34卷 327-341页

作者： LIU Wangbao CHEN Ranran College of Geography science South China Normal UniversityGuangzhou 510631China

since china’s reform and opening-up,the growing dis.a.ity between urban and rural areas.a.d regions has led to massive *** china’s Rural Revitalization strategy and the industrial transfer from the eastern coas.a. areas to the inland,the migration direction and pattern of the floating population have undergone certain *** the 2017 china Migrants Dynamic survey(CMDs),excluding Hong Kong,Macao,and Taiwan regions of china,organized by china’s National Health Commission,the relationship matrix of the floating population is constructed according to the inflow place of the interviewees.a.d their outflow place(the location of the registered residence)in the questionnaire *** then apply the complex network model to analyze the migration direction and network pattern of china’s floating population from the city *** migration network shows.a. obvious hierarchical *** first-,second-,third-and fourth-tier distribution cities.a.e municipalities directly under the central government,provincial capital cities,major cities in the central and western regions.a.d ordinary cities in all provinces,*** migration trend is from the central and western regions to the eastern coas.a. *** migration network has‘s.a.l world’characteristics,forming nine *** shows that most node cities in the same community are closely linked and geographically close,indicating that the migration network of floating population is still affected by geographical *** the urban-rural and regional differences will promote the rational distribution this *** is neces.a.y to strengthen the reform of the registered residence system,so that the floating population can enjoy urban public services comparable to other populations.a.d allow migrants to live and work in peace.

关键词： complex network floating population migration network s.a.ial pattern community structure

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superhydrophobic surface-Assisted Preparation of Microspheres.a.d supraparticles.a.d Their Applications

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Nano-Micro Letters 2024年第4期16卷 110-138页

作者： Mengyao Pan Huijuan s.a. Yue Fan Jinlong Yang Jiaxin Liu Zhongqian Deng Zhenda Liu Zhidi Chen Jun Zhang Kangfeng Yi Yucai su Dehui Wang Xu Deng Fei Deng Institute of Fundamental and Frontier sciences University of Electronic Science and Technology of ChinaChengdu 611731People’s Republic of China school of Materials science and Engineering Sun Yat-Sen UniversityGuangzhou 510275People’s Republic of China shenzhen Institute for Advanced study University of Electronic Science and Technology of ChinaShenzhen 518110People’s Republic of China Pharmaceutical Glass Co.Ltd Zibo 256100People’s Republic of China Department of Nephropathy School of MedicineSichuan Provincial People’s HospitalUniversity of Electronic Science and Technology of ChinaChengduPeople’s Republic of China Department of Nephrology Sichuan Provincial People’s Hospital Jinniu HospitalChengdu Jinniu District People’s HospitalChengduPeople’s Republic of China

superhydrophobic surface(sHs) has been well developed, as sHs renders the property of minimizing the water/solid contact interface. Water droplets deposited onto sHs with contact angles exceeding 150°, allow them to retain spherical s.a.es, and the low adhesion of sHs facilitates easy droplet collection when tilting the substrate. These characteristics make sHs suitable for a wide range of applications. One particularly promising application is the fabrication of microsphere and supraparticle materials. sHs offers.a.distinct advantage as.a.universal platform capable of providing customized services for a variety of microspheres.a.d supraparticles. In this review, an overview of the strategies for fabricating microspheres.a.d supraparticles with the aid of sHs, including cross-linking process, polymer melting,and droplet template evaporation methods, is first presented. Then, the applications of microspheres.a.d supraparticles formed onto sHs.a.e discussed in detail, for example, fabricating photonic devices with controllable structures.a.d tunable structural colors, acting as catalysts with emerging or synergetic properties, being integrated into the biomedical field to construct the devices with different medicinal purposes, being utilized for inducing protein crys.a.lization and detecting trace amounts of analytes. Finally,the perspective on future developments involved with this res.a.ch field is given, along with some obs.a.les.a.d opportunities.

关键词： superhydrophobic surface Microspheres.a.d supraparticles Photonic devices Catalysts Biomedical and trace detections

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Plas.a.current tomography for HL-2A based on Bayes.a. inference

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Plas.a.science and Technology 2024年第5期26卷 165-173页

作者：刘自结王天博吴木泉罗正平王硕孙腾飞肖炳甲李建刚 College of Physics.a.d Optoelectronic Engineering Shenzhen UniversityShenzhen 518060People’s Republic of China southwestern Institute for Physics Chengdu 610200People’s Republic of China Institute of Plas.a.Physics Chinese Academy of SciencesHefei 230031People’s Republic of China University of science and Technology of china Hefei 230026People’s Republic of China

An accurate plas.a.current profile has irreplaceable value for the steady-s.a.e operation of the *** this study,plas.a.current tomography based on Bayes.a. inference is.a.plied to an HL-2A device and used to reconstruct the plas.a.current *** different Bayes.a. probability priors.a.e tried,namely the Conditional Auto Regressive(CAR)prior and the Advanced squared Exponential(AsE)kernel *** to the CAR prior,the AsE kernel prior adopts nons.a.ionary hyperparameters.a.d introduces the current profile of the reference discharge into the hyperparameters,which can make the s.a.e of the current profile more flexible in *** results indicate that the AsE prior couples more information,reduces the probability of unreasonable solutions.a.d achieves higher reconstruction accuracy.

关键词： plas.a.current tomography Bayes.a. inference machine learning Gauss.a. distribution

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