Varicella,a highly contagious respiratory infection caused by the varicella-zoster virus(VZV),predominantly affects children and is characterized by symptoms such as low-grade fever and vesicular rash[1,2].In China,va...Varicella,a highly contagious respiratory infection caused by the varicella-zoster virus(VZV),predominantly affects children and is characterized by symptoms such as low-grade fever and vesicular rash[1,2].In China,varicella remains prevalent,with a steady increase in incidence,peaking at 70.14 cases per 100,000 individuals in 2019[3].Although the number of reported outbreaks and cases from 2020 to 2022 was lower than those from 2006 to 2012 and 2013 to 2019,varicella continues to pose a significant public health challenge[3].展开更多
[Objective]Precipitation events caused by Super Typhoon Doksuri in Fujian Province were simulated and evaluated based on the WRF model to provide a reference for typhoon precipitation simulation and forecasting in sou...[Objective]Precipitation events caused by Super Typhoon Doksuri in Fujian Province were simulated and evaluated based on the WRF model to provide a reference for typhoon precipitation simulation and forecasting in southeast coastal areas of China.[Methods]The next-generation mesoscale numerical weather prediction model WRF V4.3(The Weather Research and Forecasting Model)was used to simulate the precipitation caused by Typhoon Doksuri in Fujian Province in 2023.Observations from 86 meteorological stations with hourly rainfall records were used to evaluate the model’s performance.Six evaluation indices were used,including the correlation coefficient(R),root mean square error(RMSE),mean absolute error(MAE),equitable threat score(ETS),probability of detection(POD),and false alarm ratio(FAR).[Results](1)The temporal and spatial evolution of precipitation during Typhoon Doksuri was effectively captured by the WRF model.Precipitation intensity increased gradually from July 27 to 29,2023,with the heaviest rainfall concentrated in the northern and eastern coastal areas of Fujian Province.(2)Significant differences in model performance were observed in terms of R,RMSE,and MAE.The largest errors occurred in Putian City,while smaller errors were found in southwestern Fujian Province.The evaluation result of all six indices showed that the WRF model performed best in simulating daily precipitation compared to hourly,three-hourly,six-hourly,and twelve-hourly precipitation.(3)The R95p index indicated that the WRF model successfully captured the overall spatial distribution of extreme precipitation.However,extreme precipitation intensity was overestimated in certain coastal areas.(4)Despite accurately identifying the coastal regions of Fujian as being most affected,the WRF model failed to accurately simulate the spatial distribution and intensity of precipitation.The simulated precipitation centers showed discrepancies when compared with the observed centers.[Conclusion]Although the WRF model underestimated hourly precipitation,it successfully captured the temporal evolution and spatial distribution of rainfall caused by Typhoon Doksuri in Fujian Province.It reproduced the heavy rainfall centers in central Fujian Province,with daily precipitation peaks reaching up to 350 mm.This highlighted the severity of extreme rainfall caused by Typhoon Doksuri.展开更多
A new pholcid spider species,Khorata qunzhen Yao&Liu,sp.nov.,is described from Tianmen Moun-tain,Yangxi Village,Geling Town,Yongtai County,Fuzhou City,Fujian Province.Photographs and distribution map of this speci...A new pholcid spider species,Khorata qunzhen Yao&Liu,sp.nov.,is described from Tianmen Moun-tain,Yangxi Village,Geling Town,Yongtai County,Fuzhou City,Fujian Province.Photographs and distribution map of this species are provided in the present study.展开更多
Fujian Baiyuan Machinery Co.,Ltd.was established in 2002 with a registered capital of 100 million yuan.It is the chairman enterprise of"China Textile Machinery Association".This national high-tech enterprise...Fujian Baiyuan Machinery Co.,Ltd.was established in 2002 with a registered capital of 100 million yuan.It is the chairman enterprise of"China Textile Machinery Association".This national high-tech enterprise covers an area of 58000 square meters and integrates,service,software development.展开更多
This study first analyzes four distinct forms of Fujian folk dance,highlighting the notable differences in their cultural characteristics and dance qualities.It then categorizes these dance forms to align with textboo...This study first analyzes four distinct forms of Fujian folk dance,highlighting the notable differences in their cultural characteristics and dance qualities.It then categorizes these dance forms to align with textbook construction,discussing in depth the principles guiding the development of textbooks that correspond to these classifications.展开更多
Porphyry-skarn deposits are genetically associated with multistage intrusive complexes.However,their ore fertility varies markedly,as exemplified by the coexistence of mineralized and barren intrusions within a single...Porphyry-skarn deposits are genetically associated with multistage intrusive complexes.However,their ore fertility varies markedly,as exemplified by the coexistence of mineralized and barren intrusions within a single pluton.The factors controlling this disparity,particularly whether high oxygen fugacity(fO_(2))and volatile-rich magmas are essential,remain poorly constrained.This study investigates the Fengyan Zn-Pb-Mo deposit in the central Fujian region by comparing geochronological and geochemical features of ore-associated granite porphyry and barren monzogranite.SIMS zircon U-Pb dating reveals the mineralized intrusion crystallized at 142.5±1.6 Ma,significantly later than the barren monzogranite(150.3±1.3 Ma).The ore-associated porphyry exhibits higher magma temperatures and sulfur contents,yet lower fO_(2)and water content relative to the barren monzogranite.Hf-O isotopes reveal greater mantle input in the ore-related granite porphyry(ε_(Hf)(t)=-11.5 to-7.5;δ^(18)O=6.50‰to 7.11‰)than in the ore-barren monzogranite(ε_(Hf)(t)=-16.0 to-9.5;δ^(18)O=6.81‰to 8.00‰).Furthermore,elevated fO_(2)and volatile-rich conditions are not prerequisites for Zn-Pb-Mo mineralization,implying other factors are key.The barren rock formed during low-angle subduction of the Paleo-Pacific plate,whereas the mineralized porphyry originated during slab rollback and lithospheric extension.This study highlights that medium-low fO_(2)(meanΔFMQ+0.39 in granite porphyry vs.+1.80 in monzogranite),volatile-poor magmatic systems in extensional settings can form significant mineralization,offering new insights for exploration in central Fujian and analogous regions.展开更多
A combined study of magnetic fabrics, zircon U-Pb geochronology and structural deformation was carried out for Late Paleozoic sedimentary and Mesozoic magmatic rocks in the southwestern Fujian rift basin, South China,...A combined study of magnetic fabrics, zircon U-Pb geochronology and structural deformation was carried out for Late Paleozoic sedimentary and Mesozoic magmatic rocks in the southwestern Fujian rift basin, South China, aiming at deciphering the tectonic evolution during Late Mesozoic. Field observations showed that the Late Mesozoic structure deformations in southwestern Fujian were categorized into four phases： NW-SE compression, ENE-WSW extension, NNE-SSW compression and NNW-SSE extension, se- quentially. Zircons picked out from Juzhou granite and WNW-trending diabase dykes showed complete crys- tal shapes and clear oscillatory zonings on their edges, and the U-Pb dating yielded ages of 132 and 141 Ma, respectively. The susceptibility ellipsoid magnitude parameters of the Juzhou granite are characterized by flaser type strain ellipsoid, with pole density center of K3 falling into the first and the third quadrants, these fea- tures revealed that the Juzhou granite formed in ENE-WSW compressional stress field, indicating the early stage of Early Cretaceous extrusion in southwestern Fujian. The late stage of Early Cretaceous NNE-SSW ex- tension was limited by the widespread WNW-trending diabase dykes, which were usually regarded as impor- tant indications for a regional extensional setting. On the basic of the previous researches, structural deforma- tion studies, and the deductions above, it can be concluded that southwestern Fujian experienced five main tectonic stages during Late Mesozoic： Early Jurassic extension, Middie-Late Jurassic thrusting, early stage of Early Cretaceous extension, late stage of Early Cretaceous compression and Late Cretaceous extension.展开更多
文摘Varicella,a highly contagious respiratory infection caused by the varicella-zoster virus(VZV),predominantly affects children and is characterized by symptoms such as low-grade fever and vesicular rash[1,2].In China,varicella remains prevalent,with a steady increase in incidence,peaking at 70.14 cases per 100,000 individuals in 2019[3].Although the number of reported outbreaks and cases from 2020 to 2022 was lower than those from 2006 to 2012 and 2013 to 2019,varicella continues to pose a significant public health challenge[3].
文摘[Objective]Precipitation events caused by Super Typhoon Doksuri in Fujian Province were simulated and evaluated based on the WRF model to provide a reference for typhoon precipitation simulation and forecasting in southeast coastal areas of China.[Methods]The next-generation mesoscale numerical weather prediction model WRF V4.3(The Weather Research and Forecasting Model)was used to simulate the precipitation caused by Typhoon Doksuri in Fujian Province in 2023.Observations from 86 meteorological stations with hourly rainfall records were used to evaluate the model’s performance.Six evaluation indices were used,including the correlation coefficient(R),root mean square error(RMSE),mean absolute error(MAE),equitable threat score(ETS),probability of detection(POD),and false alarm ratio(FAR).[Results](1)The temporal and spatial evolution of precipitation during Typhoon Doksuri was effectively captured by the WRF model.Precipitation intensity increased gradually from July 27 to 29,2023,with the heaviest rainfall concentrated in the northern and eastern coastal areas of Fujian Province.(2)Significant differences in model performance were observed in terms of R,RMSE,and MAE.The largest errors occurred in Putian City,while smaller errors were found in southwestern Fujian Province.The evaluation result of all six indices showed that the WRF model performed best in simulating daily precipitation compared to hourly,three-hourly,six-hourly,and twelve-hourly precipitation.(3)The R95p index indicated that the WRF model successfully captured the overall spatial distribution of extreme precipitation.However,extreme precipitation intensity was overestimated in certain coastal areas.(4)Despite accurately identifying the coastal regions of Fujian as being most affected,the WRF model failed to accurately simulate the spatial distribution and intensity of precipitation.The simulated precipitation centers showed discrepancies when compared with the observed centers.[Conclusion]Although the WRF model underestimated hourly precipitation,it successfully captured the temporal evolution and spatial distribution of rainfall caused by Typhoon Doksuri in Fujian Province.It reproduced the heavy rainfall centers in central Fujian Province,with daily precipitation peaks reaching up to 350 mm.This highlighted the severity of extreme rainfall caused by Typhoon Doksuri.
基金supported by the Natural Science Foundation of China(32000301).
文摘A new pholcid spider species,Khorata qunzhen Yao&Liu,sp.nov.,is described from Tianmen Moun-tain,Yangxi Village,Geling Town,Yongtai County,Fuzhou City,Fujian Province.Photographs and distribution map of this species are provided in the present study.
文摘Fujian Baiyuan Machinery Co.,Ltd.was established in 2002 with a registered capital of 100 million yuan.It is the chairman enterprise of"China Textile Machinery Association".This national high-tech enterprise covers an area of 58000 square meters and integrates,service,software development.
文摘This study first analyzes four distinct forms of Fujian folk dance,highlighting the notable differences in their cultural characteristics and dance qualities.It then categorizes these dance forms to align with textbook construction,discussing in depth the principles guiding the development of textbooks that correspond to these classifications.
基金jointly funded by Innovation Youth Project of Natural Science Foundation of Fujian Province(No.2024J08144)the Open Fund Project of the Key Laboratory of Ionic Rare Earth Resources and Environment,Ministry of Natural Resources(Grant no.2022IRERE101)+2 种基金the National Natural Science Foundation of China(No.41820104010)Basic Scientific Research Fund of Chinese Academy of Geological Sciences(No.JYYWF20180601)China Scholarship Council(CSC,201908110163)。
文摘Porphyry-skarn deposits are genetically associated with multistage intrusive complexes.However,their ore fertility varies markedly,as exemplified by the coexistence of mineralized and barren intrusions within a single pluton.The factors controlling this disparity,particularly whether high oxygen fugacity(fO_(2))and volatile-rich magmas are essential,remain poorly constrained.This study investigates the Fengyan Zn-Pb-Mo deposit in the central Fujian region by comparing geochronological and geochemical features of ore-associated granite porphyry and barren monzogranite.SIMS zircon U-Pb dating reveals the mineralized intrusion crystallized at 142.5±1.6 Ma,significantly later than the barren monzogranite(150.3±1.3 Ma).The ore-associated porphyry exhibits higher magma temperatures and sulfur contents,yet lower fO_(2)and water content relative to the barren monzogranite.Hf-O isotopes reveal greater mantle input in the ore-related granite porphyry(ε_(Hf)(t)=-11.5 to-7.5;δ^(18)O=6.50‰to 7.11‰)than in the ore-barren monzogranite(ε_(Hf)(t)=-16.0 to-9.5;δ^(18)O=6.81‰to 8.00‰).Furthermore,elevated fO_(2)and volatile-rich conditions are not prerequisites for Zn-Pb-Mo mineralization,implying other factors are key.The barren rock formed during low-angle subduction of the Paleo-Pacific plate,whereas the mineralized porphyry originated during slab rollback and lithospheric extension.This study highlights that medium-low fO_(2)(meanΔFMQ+0.39 in granite porphyry vs.+1.80 in monzogranite),volatile-poor magmatic systems in extensional settings can form significant mineralization,offering new insights for exploration in central Fujian and analogous regions.
基金supported by the projects the China Geological Survey(Nos.12120113089600,12120114028701 and 1212011085472)the Key Project of Natural Science Foundation of China(No.41530321)the Fundamental Research Funds for the Central University(No.2652017259)
文摘A combined study of magnetic fabrics, zircon U-Pb geochronology and structural deformation was carried out for Late Paleozoic sedimentary and Mesozoic magmatic rocks in the southwestern Fujian rift basin, South China, aiming at deciphering the tectonic evolution during Late Mesozoic. Field observations showed that the Late Mesozoic structure deformations in southwestern Fujian were categorized into four phases： NW-SE compression, ENE-WSW extension, NNE-SSW compression and NNW-SSE extension, se- quentially. Zircons picked out from Juzhou granite and WNW-trending diabase dykes showed complete crys- tal shapes and clear oscillatory zonings on their edges, and the U-Pb dating yielded ages of 132 and 141 Ma, respectively. The susceptibility ellipsoid magnitude parameters of the Juzhou granite are characterized by flaser type strain ellipsoid, with pole density center of K3 falling into the first and the third quadrants, these fea- tures revealed that the Juzhou granite formed in ENE-WSW compressional stress field, indicating the early stage of Early Cretaceous extrusion in southwestern Fujian. The late stage of Early Cretaceous NNE-SSW ex- tension was limited by the widespread WNW-trending diabase dykes, which were usually regarded as impor- tant indications for a regional extensional setting. On the basic of the previous researches, structural deforma- tion studies, and the deductions above, it can be concluded that southwestern Fujian experienced five main tectonic stages during Late Mesozoic： Early Jurassic extension, Middie-Late Jurassic thrusting, early stage of Early Cretaceous extension, late stage of Early Cretaceous compression and Late Cretaceous extension.
