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Quantitative effect of kerogen type on the hydrocarbon generation potential of Paleogene lacustrine source rocks,Liaohe Western Depression,China

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Petroleum Science 2024年第1期21卷 14-30页

作者： sha.sha.Hui xiong-Qi Pang Fu-Jie Jiang Chen-xi Wang Shu-xing Mei Tao Hu Hong Pang Min Li xiao-Long Zhou Kan-Yuan Shi State Key Laboratory of Petroleum Resources and Prospecting China University of Petroleum(Beijing)Beijing102249China College of Geosciences China University of Petroleum(Beijing)Beijing102249China Exploration and Development Research Institute PetroChina Liaohe Oilfield CompanyPanjin 124010LiaoningChina

Kerogen types exert a decisive effect on the onset and capacity of hydrocarbon generation of source *** source rocks in the Liaohe Western Depression are characterized by thick deposition,high total organic carbon(TOC)content,various kerogen types,and a wide range of thermal ***,their hydrocarbon generation potential and resource estimation can be *** this study,geochemical tests,numerical analysis,hydrocarbon generation kinetics,and basin modeling were integrated to investigate the differential effects of kerogen types on the hydrocarbon generation potential of lacustrine source *** hydrocarbon generation and expulsion(HGE)models of different kerogen types were established quantitatively upon abundant Rock-Eval/TOC/vitrinite reflectance(R_(o))*** sets of good-excellent source rocks deposited in the fourth(Es4),third(Es3),and first(Es1)members of Paleogene sha.ejie Formation,are predominantly types I-II_(1),II_(1)-II_(2),and II-III,*** activation energy of types I-II_(2)kerogen is concentrated(180-230 kcal/mol),whereas that of type III kerogen is widely distributed(150-280 kcal/mol).The original hydrocarbon generation potentials of types I,II_(1),II_(2),and III kerogens are 790,510,270,and 85 mg/g TOC,*** Ro values of the hydrocarbon generation threshold for type I-III source rocks gradually increase from 0.42%to 0.74%,and Ro values of the hydrocarbon expulsion threshold increase from 0.49%to 0.87%.Types I and II_(1)source rocks are characterized by earlier hydrocarbon generation,more rapid hydrocarbon expulsion,and narrower hydrocarbon generation windows than types II_(2)and III source *** kerogen types also affect the HGE history and resource *** types(conventional,tight,and sha.e oil/gas)and three levels(realistic,expected,and prospective)of hydrocarbon resources of different members in the Liaohe Western Depression are *** suggest that t

关键词： Kerogen type Hydrocarbon generation potential Lacustrine source rocks Liaohe western depression

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Synthetic Strategies of Carbon Nanobelts and Beyond

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Chemical Research in Chinese Universities 2024年第4期40卷 627-631页

作者： LI Yanbang sha.G Wansong REN Yu ZHANG xi-sha.LI Cheng ZHANG Guanxin ZHANG Deqing Beijing National Laboratory for Molecular Science CAS Key Laboratory for Organic SolidsInstitute of ChemistryChinese Academy of SciencesBeijing100190P.R.China University of Chinese Academy of Sciences Beijing100049P.R.China

Carbon nanobelts(CNBs)with aesthetically appealing molecular structures and outstanding physical properties have attracted more and more attentions from the scientific community due to their potential applications in synthetic materials,host-guest chemistry,optoelectronics,and so *** synthesis of CNBs at different stages was overviewed and some representative breakthroughs and advances in synthetic strategies were highlighted and *** key issue for the synthesis of CNBs is how to construct curved structures with high strain *** not only proposed a few unconventional CNBs as the promising target molecules,but also pointed out the bottom-up synthesis of conjugated tubular segments of carbon nanotubes sha.ing similar properties as carbon nanotubes is the next focus in this emerging area.

关键词： Carbon nanobelt Strain energy Carbon nanoring Single-walled carbon nanotube Bottom-up synthesis

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Gastrointestinal problems in a valproic acid-induced rat model of autism: From maternal intestinal health to offspring intestinal function

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World Journal of Psychiatry 2024年第7期14卷 1095-1105页

作者： sha.Li Nan Zhang Wang Li Han-Lai Zhang xiao-xi Wang Institute of Acupuncture and Moxibustion China Academy of Chinese Medical SciencesBeijing 100000China Institute of Basic Theory for Chinese Medicine China Academy of Chinese Medical SciencesBeijing 100000China

BACKGROUND Autism spectrum disorder(ASD)is a developmental disorder characterized by social deficits and repetitive ***(GI)problems,such as constipation,diarrhea,and inflammatory bowel disease,commonly occur in patients with ***,GI problems of ASD patients were attributed to intestinal inflammation and vertical mother-to-infant microbiome *** To explore whether GI problems in ASD are related to maternal intestinal inflam-mation and gut microbiota *** An ASD rat model was developed using valproic acid(VPA).Enzyme-linked immunosorbent assay and fecal 16S rRNA sequencing were used to test GI *** VPA exposure during pregnancy led to pathological maternal intestinal changes,resulting in alterations in maternal gut ***,the levels of inflammatory factors also ***,prenatal exposure to VPA resulted in impaired duodenal motility in the offspring as well as increased levels of infla-mmatory *** GI problems in ASD may be associated with maternal intestinal inflammation and microbiota *** research is required to find more evidence on the etiology and treatment of GI problems in ASD.

关键词： Autism spectrum disorder Gastrointestinal problems Gut microbiota Intestinal inflammation Intestinal motility

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Surface plasmon decorated InGaO deep-UV photodetector array for image sensing and water quality monitoring via highly effective hot electron excitation and interfacial injection

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Science China(Technological Sciences) 2024年第8期67卷 2449-2460页

作者： SHU LinCong sha.ShuLin xi ZhaoYing LI Lei YAO SuHao ZHANG JiaHan JI XueQiang ZHANG sha.Hui BIAN Ang JIANG MingMing GUO YuFeng TANG WeiHua LIU Zeng Innovation Center of Gallium Oxide Semiconductor(IC-GAO) College of Integrated Circuit Science and EngineeringNanjing University of Posts and TelecommunicationsNanjing 210023China School of Electronic Information Engineering Inner Mongolia UniversityHohhot 010021China College of Science MIIT Key Laboratory of Aerospace Information Materials and PhysicsNanjing University of Aeronautics and AstronauticsNanjing 211106China Collaborative Innovation Center of Advanced Microstructures School of Electronic Science and EngineeringNanjing UniversityNanjing 210093China Institute of Biological and Medical Engineering Guangdong Academy of SciencesGuangzhou 510316China School of Science Jiangsu University of Science and TechnologyZhenjiang 212100China School of Integrated Circuits Beijing University of Posts and TelecommunicationsBeijing 100876China

In addition to the plasmon-mediated resonant coupling mechanism,the excitation of hot electron induced by plasmon presents a promising path for developing high-performance optoelectronic devices tailored for various *** study introduces a sophisticated design for a solar-blind ultraviolet(UV)detector array using linear In-doped Ga_(2)O_(3) (InGaO)modulated by platinum(Pt)nanoparticles(PtNPs).The construction of this array involves depositing a thin film of Ga_(2)O_(3) through the plasmonenhanced chemical vapor deposition(PECVD)***,PtNPs were synthesized via radio-frequency magnetron sputtering and annealing *** performance of these highly uniform arrays is significantly enhanced owing to the generation of high-energy hot *** process is facilitated by non-radiative decay processes induced by ***,the array achieves maximum responsivity(R)of 353 mA/W,external quantum efficiency(EQE)of 173%,detectivity(D*)of approximately 10~(13)Jones,and photoconductive gain of *** addition,the standard deviation for photocurrent stays below17%for more than 80%of the array units within the ***,the application of this array extends to photon detection in the deep-UV(DUV)*** includes critical areas such as imaging sensing and water quality *** leveraging surface plasmon coupling,the array achieves high-performance DUV photon *** approach enables a broad spectrum of practical applications,underscoring the significant potential of this technology for the advancement of DUV detectors.

关键词： InGaO PECVD surface plasmon solar-blind UV photodetector array optoelectronic applications

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Establishment of a three-dimensional particle library for graded crushed stone based on a new aggregate morphology characterization method

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Journal of Traffic and Transportation Engineering(English Edition) 2024年第1期11卷 117-130页

作者： Haitao Ge Aimin sha.Zhenqiang Han School of Future Transportation Chang'an UniversityXi'an 710064China University of Strasbourg INSA StrasbourgCNRSICubeUMR 7357Strasbourg F-67000France School of Highway Chang'an UniversityXi'an 710064China Key Laboratory for Special Area Highway Engineering of Ministry of Education Chang'an UniversityXi'an 710064China

The morphology of graded crushed stone(GCS)particles has an essential influence on the performance of aggregate *** impact of particle sha.e is a comprehensive effect that cannot be considered separately,leading to difficulties in establishing the relationship between the mixture properties and the aggregate morphology by using laboratory *** discrete element method(DEM)is an effective way widely adopted to reconstruct the morphology of particles and simulate performance tests of granular ***,selecting limited particles characterizing a real particle-assembly for simulation is still a challenge in current research due to the inherent rich variability of particle *** this study,based on the acquisition of three-dimensional(3D)aggregate sha.es by using laser scanning,ellipsoid index(EDI)translating the particle sha.e as a function of surface area,volume,and contour length is proposed to comprehensively evaluate aggregate ***,a particle library capable of characterizing aggregate morphology distribution is established based on the statistics of the corresponding morphological characteristics of particle *** model reliability is validated by carrying out a series of experimental and numerical penetration tests with nine different *** established particle library can be used to model aggregate mixtures and the proposed simulation framework is promising for optimizing the mixture gradation design numerically.

关键词： Particle library Discrete element method 3D laser scanning Coarse aggregate Morphology characterization Gradation design

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Quantifying peripapillary vessel density and retinal nerve fibre layer in type 1 diabetic children without clinically detectable retinopathy using OCTA

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International Journal of Ophthalmology(English edition) 2024年第2期17卷 278-281页

作者： Ling Chen Yun Feng sha.sha.Zhang Yan-Fang Liu Ping Lin xi’an Children’s Hospital Affiliated to xi’an Jiaotong University Xi’an 710002Shaanxi ProvinceChina

AIM:To quantify changes in radial peripapillary capillary vessel density(ppVD)and the peripapillary retinal nerve fiber layer(pRNFL)in children with type 1 diabetes without clinical diabetic retinopathy by optical coherence tomography angiography(OCTA),providing a basis for early retinopathy in children with type 1 ***:This was a retrospective study.A total of 30 patients(3–14y)with type 1 diabetes without clinical diabetic retinopathy(NDR group)were included.A total of 30 age-matched healthy subjects were included as the normal control group(CON group).The HbA1c level in the last 3mo was measured once in the NDR *** pRNFL thickness and ppVD were automatically measured,and the mean pRNFL and ppVD were calculated in the nasal,inferior,temporal,and superior *** changes in ppVD and pRNFL in the two groups were ***:Compared with CON group,the nasal and superior ppVDs decreased in the NDR group(all P0.05).Person and Spearman correlation analysis of ppVD and pRNFL thickness in each quadrant of the NDR group showed a positive correlation between nasal and superior(all P0.05).There was no significant correlation between the HbA1c level and ppVD and pRNFL in any quadrant(all P>0.05).There was no significant correlation between the course of diabetes mellitus and ppVD and pRNFL in any quadrant(all P>0.05).CONCLUSION:ppVD and pRNFL decrease in eyes of children with type 1 diabetes before clinically detectable retinopathy and OCTA is helpful for early monitoring.

关键词： diabetic retinopathy children peripapillary vessel density peripapillary retinal nerve fiber layer optical coherence tomography angiography

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Ultrasonic scalpel based on fusiform phononic crystal structure

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Chinese Physics B 2024年第10期33卷 302-310页

作者： sha.Wang Junjie sha. Shuyu Lin Ocean College Jiangsu University of Science and TechnologyZhenjiang 212100China sha.nxi Key Laboratory of Ultrasonics School of Physics and Information TechnologyShaanxi Normal UniversityXi’an 710119China National Laboratory of Solid State Microstructures School of PhysicsCollaborative Innovation Center of Advanced MicrostructuresNanjing UniversityNanjing 210093China

In response to the ultrasonic scalpels with the vibrational modal coupling which leads to a decrease in efficiency,an ultrasonic scalpel based on fusiform phononic crystals(PnCs)is *** accurate theoretical model is constructed,which is mainly composed of electromechanical equivalent circuit models to analyze the frequency response function and the frequency response curves of the *** band gaps exist in the fusiform PnCs owing to the periodic constraint,which can suppress the corresponding vibrational *** vibration characteristics(vibration mode,frequency,and displacement distribution)of the ultrasonic scalpel are analyzed,and the validity of the electromechanical equivalent circuit method is *** results indicate that other vibration modes near the working frequency can be *** addition,blades based on fusiform PnCs have a function akin to that of the horn,which enables displacement amplification.

关键词： phononic crystals ultrasonic scalpel bandgap vibration characteristics

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基于灰狼算法优化极限学习机的中介轴承故障诊断方法

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推进技术 2024年第4期45卷 190-200页

作者：栾孝驰张席沙云东徐石沈阳航空航天大学航空发动机学院辽宁沈阳110136

针对中介轴承故障振动信号具有传递路径复杂、强背景噪声干扰等特点,其故障特征不易提取的问题,提出基于自适应噪声完全经验模态分解(CEEMDAN)与灰狼算法(GWO)优化的极限学习机(ELM)相结合的中介轴承故障诊断方法。利用CEEMDAN和相关系... 详细信息

针对中介轴承故障振动信号具有传递路径复杂、强背景噪声干扰等特点,其故障特征不易提取的问题,提出基于自适应噪声完全经验模态分解(CEEMDAN)与灰狼算法(GWO)优化的极限学习机(ELM)相结合的中介轴承故障诊断方法。利用CEEMDAN和相关系数-能量比-峭度准则(CEKC)对振动信号进行分解、筛选、重构;再提取重构信号的时域和频域特征构成特征矩阵;然后以平均错误率作为GWO的适应度值,对ELM的输入层与隐含层的权值和隐含层阈值进行优化后重新构建ELM;最后将特征矩阵输入ELM得到故障诊断结果。应用于中介轴承故障诊断中,ELM在GWO优化后故障诊断正确率有明显提升,其中45°方向传感器数据正确率由93.33%提升到99.17%。结果表明:该方法能够有效诊断中介轴承故障类型,表现出了较强的泛化能力。

关键词：中介轴承模态分解极限学习机灰狼算法故障诊断

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On-Surface Synthesis of Electron-Deficient Bisanthene Tetraimide

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CCS Chemistry 2024年第3期6卷 672-681页

作者： Ye Liu Liangliang Chen Hailong Li xi-sha.Zhang Qigang Zhong Zhengming Hao Minghui Wu Yan-Ying Huang Lina Wang Minchong Sheng Miao xie Haiming Zhang Deqing Zhang Lifeng Chi Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices Institute of Functional Nano&Soft Materials(FUNSOM)Soochow UniversitySuzhouJiangsu 215123 CAS Key Laboratory for Organic Solids Institute of ChemistryChinese Academy of SciencesBeijing 100190 Institute of Applied Physics Justus Liebig University GiessenGiessen 35392

Imide-based conjugated molecules have emerged as a highly promising class of building blocks for constructing n-type semiconducting materials with lowlying lowest unoccupied molecular orbitals and exceptional *** imides,such as naphthalene diimides,perylene diimides and their lateral fused analogs,have been synthesized extensively,the design and synthesis of largerπ-extended molecules incorporating more than two imide groups are desirable but still very ***,we report the synthesis of an unprecedented electron-deficient bisanthene tetraimide(ATI)containing a bisantheneconjugated core and four five-membered imide groups,which was successfully achieved via a combined approach of solution and on-surface *** chemical structures,electronic states,formation mechanism and aromaticity of ATI were systematically investigated by scanning tunneling microscopy,noncontact atomic force microscopy,scanning tunneling spectroscopy,and density functional theory calculations.

关键词： on-surface synthesis electron-deficient bisanthene tetraimide dehydrocyclization low lowest unoccupied molecular orbital level

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Relationship Between Climate Change and Marmot Plague of Marmota himalayana Plague Focus—the Altun Mountains of the Qinghai-xizang Plateau,China,2000–2022

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China CDC weekly 2024年第4期6卷 69-74,I0006页

作者： Qun Duan xiaojin Zheng Zhiqiang Gan Dongyue Lyu Hanyu sha.xinmin Lu xiaoling Zhao Asaiti Bukai Ran Duan Shuai Qin Li Wang Jinxiao xi Di Wu Peng Zhang Deming Tang Zhaokai He Huaiqi Jing Biao Kan xin Wang National Institute for Communicable Disease Control and Prevention Chinese Center for Disease Control and PreventionBeijingChina Akesai Kazak Autonomous County Center for Disease Control and Prevention Jiuquan CityGansu ProvinceChina Jiuquan Center for Disease Control and Prevention Jiuquan CityGansu ProvinceChina Gansu Provincial Center for Disease Control and Prevention Lanzhou CityGansu ProvinceChina

Introduction:Plague is a zoonotic disease that occurs naturally in specific geographic *** change can influence the populations of the plague host or vector,leading to variations in the occurrence and epidemiology of plague in ***:In this study,we collected meteorological and plague epidemiological data from the Marmota himalayana plague focus in the Altun Mountains of the Qinghai-xizang *** data spanned from 2000 to *** describe the climatic factors and plague epidemic conditions and we describe their analysis by Pearson’s ***:During the period from 2000 to 2022,the isolation rates of Yersinia pestis(***)from marmots and fleas were 9.27%(451/4,864)and 7.17%(118/1,646),***,we observed a positive rate of F1 antibody of 11.25%(443/3,937)in marmots and 18.16%(142/782)in *** regards to climate,there was little variation,and a decreasing trend in blowing-sand days was *** temperature in the previous year showed a negative correlation with the *** isolation rate in marmots(r=−0.555,P=0.011)and the positive rate of F1 antibody in marmots(r=−0.552,P=0.012)in the current *** average annual precipitation in the previous two years showed a positive correlation with marmot density(r=0.514,P=0.024),while blowingsand days showed a negative correlation with marmot density(r=−0.701,P=0.001).Furthermore,the average annual precipitation in the previous three years showed a positive correlation with the isolation rate of *** from marmots(r=0.666,P=0.003),and blowing-sand days showed a negative correlation with marmot density(r=−0.597,P=0.009).Conclusions:The findings of this study indicate that there is a hysteresis effect of climate change on the prevalence of ***,monitoring climate conditions can offer significant insights for implementing timely preventive and control measures to combat plague epidemics.

关键词： Plague epidemiology Plateau

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