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Characteristics of microscopic pore heterogeneity and development model of Wufeng‒Longmaxi Shales in the Pengshui area of south-east Chongqing

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Frontiers of Earth Science 2024年第1期18卷 188-203页

作者： Lu SUN Zhigang WEN Guisong HE Peixian ZHANG Chenjun WU Liwen ZHANG Yingyang XI Bo LI College of resources and Environment Yangtze UniversityWuhan 430100China Research institute of Exploration and Development Sinopec East China CompanyNanjing 210011China

Normal-pressure shale gas reservoirs are widely distributed in south-eastern Chongqing and show good potential for resource *** paper reports the organic matter(OM),physical,and pore characteristics,mineral composition,and gas content of representative shale samples from the Upper Ordovician Wufeng Formation and Member 1 of the Lower Silurian Longmaxi Formation(Long 1 Member).Microscopic pores within different shale layers of the Long 1 Member were classified,quantitatively evaluated,and their development mechanisms were systematically *** found that OM characteristics,mineral composition,and pore type were the main factors affecting the enrichment and preservation of shale *** characteristics of the Long 1 Member are mainly controlled by changes in the sedimentary *** are evident differences in total organic carbon content and mineral composition vertically,leading to a variable distribution of pores across different *** matter abundance controls the degree of OM pore development,while clay minerals abundance control the development of clay mineral-related *** organic carbon content generally controls the porosity of the Long 1 Member,but clay minerals also play a role in OM-poor *** connectivity and permeability are influenced by the development of pores associated with brittle *** propose a microscopic pore development model for the different *** geochemical data and this pore development model,layers 1‒4 are considered to be excellent shale gas preservation and enrichment *** preservation conditions in layers 5‒7 result in high levels of shale gas *** 8‒9 possess a better sealing condition compared with layers 5‒7 and are conducive to the enrichment and preservation of shale gas,and can thus be used as future potential target *** research provides a theoretical basis for exploring and evaluating shale gas potential in the studied region or other co

关键词： shale gas pore characteristics Longmaxi Formation reservoir model

Observation of robust anisotropy in WS_(2)/BP heterostructures

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Nano Research 2024年第7期17卷 6749-6756页

作者： Xinran Li Xing Xie Biao Wu Junying Chen Shaofei Li Jun He Zongwen Liu Jian-Tao Wang Yanping Liu institute of Quantum Physics School of PhysicsCentral South University932 South Lushan RoadChangsha 410083China State Key Laboratory of Precision Manufacturing for Extreme Service Performance Central South University932 South Lushan RoadChangsha 410083China School of Chemical and Biomolecular Engineering The University of SydneyNSW 2006Australia The University of Sydney Nano institute The University of SydneyNSW 2006Australia Beijing National Laboratory for Condensed Matter Physics Institute of PhysicsChinese Academy of SciencesBeijing 100190China School of Physical Sciences University of Chinese Academy of SciencesBeijing 100049China Songshan Lake Materials Laboratory Dongguan 523808China Shenzhen Research institute of Central south University Shenzhen 518000China

Two-dimensional(2D)anisotropic materials have garnered significant attention in the realm of anisotropic optoelectronic devices due to their remarkable electrical,optical,thermal,and mechanical *** extensive research has delved into the optical and electrical characteristics of these materials,there remains a need for further exploration to identify novel materials and structures capable of fulfilling device requirements under various ***,we employ heterojunction interface engineering with black phosphorus(BP)to disrupt the C3 rotational symmetry of monolayer WS_(2).The resulting WS_(2)/BP heterostructure exhibits pronounced anisotropy in exciton emissions,with a measured anisotropic ratio of 1.84 for neutral *** a comprehensive analysis of magnetic-field-dependent and temperature-evolution photoluminescence spectra,we discern varying trends in the polarization ratio,notably observing a substantial anisotropy ratio of 1.94 at a temperature of 1.6 K and a magnetic field of 9 *** dynamic behavior is attributed to the susceptibility of the WS_(2)/BP heterostructure interface strain to fluctuations in magnetic fields and *** findings provide valuable insights into the design of anisotropic optoelectronic devices capable of adaptation to a range of magnetic fields and temperatures,thereby advancing the frontier of material-driven device engineering.

关键词： two-dimensional materials in-plane anisotropy black phosphorus heterojunctions optoelectronic devices photoluminescence spectra

Unveiling optical anisotropy in disrupted symmetry WSe2/SiP heterostructures

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Nano Research 2024年第9期17卷 8585-8591页

作者： Biqi Hu Xing Xie Xinyu Ouyang Junying Chen Shaofei Li Jun He Zongwen Liu Jian-Tao Wang Yanping Liu institute of Quantum Physics School of PhysicsCentral South University932 South Lushan RoadChangsha 410083China State Key Laboratory of Precision Manufacturing for Extreme Service Performance Central South University932 South Lushan RoadChangsha 410083China School of Chemical and Biomolecular Engineering The University of SydneyNSW 2006Australia The University of Sydney Nano institute The University of SydneyNSW 2006Australia Beijing National Laboratory for Condensed Matter Physics Institute of PhysicsChinese Academy of SciencesBeijing 100190China School of Physical Sciences University of Chinese Academy of SciencesBeijing 100049China Songshan Lake Materials Laboratory Dongguan 523808China Shenzhen Research institute of Central south University Shenzhen 518000China

Two-dimensional(2D)transition metal dichalcogenides(TMDs)have garnered considerable attention for their promising applications in sensors and optoelectronic devices,owing to their exceptional optical,electronic,and optoelectronic ***,the inherent high symmetry of TMD lattices imposes limitations on their functional ***,we present a strategy to disrupt the C_(3)rotational symmetry of monolayer WSe_(2)by fabricating a heterostructure incorporating WSe_(2)and SiP *** comprehensive experimental investigations and first-principle calculations,we elucidate that in the WSe_(2)/SiP heterostructure,excitons-both neutral and charged-emanating from WSe_(2)exhibit pronounced anisotropy,which remains robust against temperature ***,we observe an anisotropic ratio reaching up to 1.5,indicating a substantial degree of ***,we demonstrate the tunability of exciton anisotropy through the application of a magnetic field,resulting in a significant reduction in the anisotropic ratio with increasing field strength,from 1.57 to ***,the change in heterojunction anisotropy ratio reaches 24.8%as the magnetic field *** findings elucidate that the perturbation of the C_(3)rotational symmetry of the WSe_(2)monolayer arises from a non-uniform charge density distribution within the layer,exhibiting mirror *** results underscore the potential of heterostructure engineering in tailoring the properties of isotropic materials and provide a promising avenue for advancing the application of anisotropic devices across various fields.

关键词： symmetry breaking heterostructure engineering anisotropy optical spectroscopy

Identified the hydrochemical and the sulfur cycle process in subsidence area of Pingyu mining area using multi-isotopes combined with hydrochemistry methods

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Journal of Groundwater Science and Engineering 2024年第1期12卷 62-77页

作者： Hui-Meng Su Fa-Wang Zhang Jing-Yu Hu Jin-Feng Lei Wei Zuo Bo Yang Yu-Hua Liu School of Environmental Studies China University of GeosciencesWuhan 430074China Center for Hydrogeology and Environmental Geology China Geological SurveyBaoding 071051Hebei ProvinceChina Henan Branch China South-to-North Water Diversion Middle Route Corporation LimitedZhengzhou 450046China The Fifth Geological Survey institute Henan Provincial Bureau of Geology and Mineral ResourcesZhengzhou 450012China Natural resources Science and Technology Innovation Center of Henan Province(Research on Eco-Environmental Assessment and Restoration Technology) Zhengzhou 450012China

Groundwater serves as an important water source for residents in and around mining *** achieve scientific planning and efficient utilization of water resources in mining areas,it is essential to figure out the chemical formation process and the ground water sulfur cycle that transpire after the coal mining *** on studies of hydrochemistry and D,^(18)O-H_(2)O,^(34)S-SO_(4)isotopes,this study applied principal component analysis,ion ratio and other methods in its attempts to reveal the hydrogeochemical action and sulfur cycle in the subsidence area of Pingyu mining *** study discovered that,in the studied area,precipitation provides the major supply of groundwater and the main water chemistry effects are dominated by oxidation dissolution of sulfide minerals as well as the dissolution of carbonate and silicate *** sulfate in groundwater primarily originates from oxidation and dissolution of sulfide minerals in coal-bearing strata and human *** mixed sulfate formed by the oxidation of sulfide minerals and by human activities continuously recharges the groundwater,promoting the dissolution of carbonate rock and silicate rock in the process.

关键词： PCA Ion ratio water chemistry Sulfide minerals Multi-isotopes Subsidence area of mining area

磷添加剂对Bacillus spp.修复铀尾矿过程中细菌群落演替的驱动作用

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Journal of Central south University 2024年第4期31卷 1233-1247页

作者：唐垂云钟娟吕莹姚俊李沐江刘兴宇 School of water resources and Environment Research Center of Environmental Science and EngineeringChina University of Geosciences(Beijing)Beijing 100083China General Research institute for Nonferrous Metals Beijing 100088China institute of Earth Science China University of Geosciences(Beijing)Beijing 100083China

铀尾矿库中堆积的铀尾矿会产生环境污染问题。生物矿化可以有效降低铀尾矿中铀的浸出,降低铀尾矿的环境风险。然而,目前尚不清楚磷添加剂如何影响生物矿化过程中铀尾矿的微生物群落结构。在本研究中,评估了羟基磷灰石(HS)和β-甘油磷酸... 详细信息

铀尾矿库中堆积的铀尾矿会产生环境污染问题。生物矿化可以有效降低铀尾矿中铀的浸出,降低铀尾矿的环境风险。然而,目前尚不清楚磷添加剂如何影响生物矿化过程中铀尾矿的微生物群落结构。在本研究中,评估了羟基磷灰石(HS)和β-甘油磷酸五水合物(GP)作为添加剂对Bacillus spp.修复铀尾矿过程中的微生物群落演替的影响。结果表明,磷添加剂有效地改变铀尾矿浸出液的pH值和铀浸出浓度,显著提高了微生物多样性,促进了微生物群落中门类微生物从actinobacteria向firmicutes和proteobacteria的演替。两种添加剂对细菌群落演替模式的影响不同,其中GP的促进作用较大。GP促进了微生物群落结构中核心物种尤其是Firmicutes的生长,在GP处理中,Bacillus,Pseudomonas,Desulfotomaculum,和Clostridium_sensu_stricto_12的丰度较高,表明这些属类微生物在微生物群落中发挥了重要作用。研究结果为磷添加剂参与生物修复和细菌群落演替提供了证据,从而为铀尾矿的生物矿化技术提供理论支撑。

关键词：生物矿化羟基磷灰石微生物群落铀 β-甘油磷酸五水合物

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Increased number of symptoms during the acute phase of SARS-CoV-2 infection in athletes is associated with prolonged time to return to full sports performance—AWAREⅧ

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Journal of Sport and Health Science 2024年第3期13卷 280-287,I0001页

作者： Carolette Snyders Marlise Dyer Nicola Sewry Esme Jordaan Martin Schwellnus Sport Exercise Medicine and Lifestyle Institute(SEMLI)Faculty of Health SciencesUniversity of PretoriaPretoria 0083South Africa Section Sports Medicine Faculty of Health SciencesUniversity of PretoriaPretoria 0083South Africa IOC Research Centre of south Africa Pretoria 0083South Africa Biostatistics Unit South African Medical Research CouncilTygerberg 7505South Africa Statistics and Population Studies Department University of the Western CapeCape Town 7535South Africa

Purpose The aim of the study was to identify factors associated with prolonged time to return to full performance(RTFP)in athletes with recent severe acute respiratory syndrome coronavirus 2(SARS-CoV-2)*** Prospective cohort study with cross sectional analysis.A total of 84 athletes with confirmed SARS-CoV-2 infection assessed at a coronavirus disease 2019 recovery clinic gave a history of age,sex,type/level of sport,co-morbidities,pre-infection training hours,and 26 acute SARS-CoV-2 symptoms from 3 categories(“nose and throat”,“chest and neck”,and“whole body”/systemic).Data on days to RTFP were obtained by structured *** associated with RTFP were demographics,sport participation,history of co-morbidities,pre-infection training history,and acute symptoms(type,number).Outcomes were:(a)days to RTFP(median,interquartile range(IQR))in asymptomatic(n=7)and symptomatic athletes(n=77),and(b)hazard ratios(HRs;95%confidence interval)for symptomatic athletes with *** a factor(univariate,multiple models).HR0.05).Factors associated with prolonged RTFP(univariate models)were:females(HR=0.57;p=0.014),endurance athletes(HR=0.41;p<0.0001),co-morbidity number(HR=0.75;p=0.001),and respiratory disease history(HR=0.54;p=0.026).In symptomatic athletes,prolonged RTFP(multiple models)was significantly associated with increased“chest and neck”(HR=0.85;p=0.017)and“nose and throat”(HR=0.84;p=0.013)symptoms,but the association was more profound between prolonged RFTP and increased total number of“all symptoms”(HR=0.91;p=0.001)and“whole body”/systemic(HR=0.82;p=0.007)*** A larger number of total symptoms and specifically“whole body”/systemic symptoms during the acute phase of SARS-CoV-2 infection in athletes is associated with prolonged RTFP.

关键词： Athletes COVID-19 Performance Recovery Return to play

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Sexual Dimorphism and Female Reproductive Characteristics in the Hainan water Skink(Tropidophorus hainanus)from Hainan,south China

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Asian Herpetological Research 2024年第1期15卷 49-58页

作者： Yu DU Xiaming ZHU Chixian LIN Yuntao YAO Xiang JI Hainan Key Laboratory for Herpetological Research College of Fisheries and Life SciencesHainan Tropical Ocean UniversitySanya 572022HainanChina Zhejiang Provincial Key Laboratory for water Environment and Marine Biological resources Protection College of Life and Environmental SciencesWenzhou UniversityWenzhou 325035ZhejiangChina institute for Eco-environmental Research of Sanyang Wetland Wenzhou UniversityWenzhou 325014ZhejiangChina

We studied sexual dimorphism in body size and shape and female reproductive characteristics in the Hainan water Skink(Tropidophorus hainanus)from Hainan,south *** our sample the largest female and male were 61.1 and 55.2 mm snout-vent length(SVL),*** mean SVL was larger in adult females(52.0 mm)than in adult males(48.3 mm).Juveniles were sexually dimorphic in head length but not in other examined morphological *** males were longer in head length and shorter in abdomen length and fore-limb length than adult females of the same *** shifts in sexual dimorphism in body shape were evident,as revealed by the fact that morphological differences between the sexes were more pronounced in adults than in *** produced a single litter of 3–6 offspring per season from early August to early *** size,litter mass and offspring(neonate)mass were positively related to female *** mass was independent of relative *** the above findings we draw three main ***,females are the larger sex in ***,and sexual dimorphism in body shape is more pronounced in adults than in ***,larger female *** produce more and larger offspring and thus heavier litters than smaller ***,the offspring size-number trade-off does is not evident in ***.

关键词： fecundity morphology offspring size-number trade-off reproduction scincidae sexual dimorphism

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Targeting the RAS/RAF/MAPK pathway for cancer therapy: from mechanism to clinical studies

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Signal Transduction and Targeted Therapy 2024年第1期9卷 173-210页

作者： Md Entaz Bahar Hyun Joon Kim Deok Ryong Kim Department of Biochemistry and Convergence Medical Sciences and institute of Medical Science Gyeongsang National UniversityCollege of MedicineJinjuSouth Korea Department of Anatomy and Convergence Medical Sciences and institute of Medical Science Gyeongsang National UniversityCollege of MedicineJinjuSouth Korea

Metastatic dissemination of solid tumors,a leading cause of cancer-related mortality,underscores the urgent need for enhanced insights into the molecular and cellular mechanisms underlying metastasis,chemoresistance,and the mechanistic backgrounds of individuals whose cancers are prone to *** most prevalent signaling cascade governed by multi-kinase inhibitors is the mitogen-activated protein kinase(MAPK)pathway,encompassing the RAS–RAF–MAPK kinase(MEK)–extracellular signal-related kinase(ERK)*** kinase is a primary mediator of the MAPK pathway,responsible for the sequential activation of downstream targets,such as MEK and the transcription factor ERK,which control numerous cellular and physiological processes,including organism development,cell cycle control,cell proliferation and differentiation,cell survival,and *** in this signaling cascade are associated with diseases such as *** inhibitors(RAFi)combined with MEK blockers represent an FDAapproved therapeutic strategy for numerous RAF-mutant cancers,including melanoma,non-small cell lung carcinoma,and thyroid ***,the development of therapy resistance by cancer cells remains an important ***,an intracellular lysosome-dependent catabolic recycling process,plays a critical role in the development of RAFi resistance in ***,targeting RAF and autophagy could be novel treatment strategies for RAF-mutant *** this review,we delve deeper into the mechanistic insights surrounding RAF kinase signaling in tumorigenesis and ***,we explore and discuss the ongoing development of next-generation RAF inhibitors with enhanced therapeutic ***,this review sheds light on the functional interplay between RAF-targeted therapies and autophagy in cancer.

关键词： RAF insight mechanism

KeyEE:Enhancing Low-Resource Generative Event Extraction with Auxiliary Keyword Sub-Prompt

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Big Data Mining and Analytics 2024年第2期7卷 547-560页

作者： Junwen Duan Xincheng Liao Ying An Jianxin Wang Hunan Key Laboratory of Bioinformatics School of Computer Science and EngineeringCentral South UniversityChangsha 410083China Big Data institute Central South UniversityChangsha 410083China

Event Extraction(EE)is a key task in information extraction,which requires high-quality annotated data that are often costly to *** classification-based methods suffer from low-resource scenarios due to the lack of label semantics and fine-grained *** recent approaches have endeavored to address EE through a more data-efficient generative process,they often overlook event keywords,which are vital for *** tackle these challenges,we introduce KeyEE,a multi-prompt learning strategy that improves low-resource event extraction by Event Keywords Extraction(EKE).We suggest employing an auxiliary EKE sub-prompt and concurrently training both EE and EKE with a shared pre-trained language *** the auxiliary sub-prompt,KeyEE learns event keywords knowledge implicitly,thereby reducing the dependence on annotated ***,we investigate and analyze various EKE sub-prompt strategies to encourage further research in this *** experiments on benchmark datasets ACE2005 and ERE show that KeyEE achieves significant improvement in low-resource settings and sets new state-of-the-art results.

关键词： natural language processing Event Extraction(EE) Multi-Prompt Learning(MPL) low-resource