本文报道新记录湖南省石松类与蕨类植物10种,分别为:结脉黑桫椤Gymnosphaera bonii(Christ) S. Y. Dong、陕西粉背蕨Aleuritopteris argentea var.obscura(Christ) Ching、叶基宽铁角蕨Asplenium pulcherrimum Ching ex Tardieu、中华...本文报道新记录湖南省石松类与蕨类植物10种,分别为:结脉黑桫椤Gymnosphaera bonii(Christ) S. Y. Dong、陕西粉背蕨Aleuritopteris argentea var.obscura(Christ) Ching、叶基宽铁角蕨Asplenium pulcherrimum Ching ex Tardieu、中华膜叶铁角蕨Hymenasplenium sinense K. W. Xu、培善膜叶铁角蕨Hymenasplenium wangpeishanii Li Bing Zhang&K. W. Xu、蓝色鳞毛蕨Dryopteris polita Rosenst.、霞客鳞毛蕨Dryopteris shiakeana H. Shang&Y. H. Yan、有盖鳞毛蕨Dryopteris hendersonii(Bedd.) C. Chr.、大齿叉蕨Tectaria coadunata(J. Smith) C. Chr.和棕毛轴脉蕨Tectaria setulosa(Baker) Holttum。展开更多
目的 观察自噬在IL-1β促进INS-1胰岛β细胞凋亡中的作用。方法 体外培养大鼠INS-1胰岛β细胞株,给予不同浓度IL-1β干预,用CCK-8法检测在不同作用时间点INS-1细胞的存活率;用Western blot技术检测不同IL-1β浓度下自噬相关蛋白LC3、Bec...目的 观察自噬在IL-1β促进INS-1胰岛β细胞凋亡中的作用。方法 体外培养大鼠INS-1胰岛β细胞株,给予不同浓度IL-1β干预,用CCK-8法检测在不同作用时间点INS-1细胞的存活率;用Western blot技术检测不同IL-1β浓度下自噬相关蛋白LC3、Beclin1、P62的表达水平;Western blot法和流式细胞术检测INS-1细胞的凋亡水平。结果 IL-1β可以降低INS-1细胞的存活率,且呈浓度及时间依赖性( P <0.05, P <0.01)。与对照组相比,随着IL-1β浓度的增高,INS-1细胞凋亡水平逐渐升高( P <0.05),且细胞自噬水平也随着IL-1β浓度的增高而逐渐增高(自噬相关蛋白LC3、Beclin1表达上升,P62降低, P <0.05)。采用自噬激动剂雷帕霉素预处理细胞上调自噬可进一步增加IL-1β诱导的细胞凋亡,而用自噬抑制剂3-MA预处理抑制细胞自噬后则可逆转IL-1β诱导的INS-1胰岛细胞凋亡。结论 IL-1β通过诱导自噬增加促进INS-1胰岛β细胞凋亡。展开更多
Electron-positron colliders operating in the GeV center-of-mass range,or tau-charm energy region,have been proved to enable competitive frontier research due to several unique features.With the progress of high-energy...Electron-positron colliders operating in the GeV center-of-mass range,or tau-charm energy region,have been proved to enable competitive frontier research due to several unique features.With the progress of high-energy physics in the last two decades,a new-generation Tau-Charm factory,called the Super Tau-Charm Facility(STCF),has been actively promoted by the particle physics community in China.STCF has the potential to address fundamental questions such as the essence of color confinement and the matter-antimatter asymmetry within the next decades.The main design goals of the STCF are a center-of-mass energy ranging from 2 to 7 GeV and a luminosity surpassing 5×10^(34)cm^(−2)s^(−1)that is optimized at a center-of-mass energy of 4 GeV,which is approximately 50 times that of the currently operating Tau-Charm factory-BEPCII.The STCF accelerator has two main parts:a double-ring collider with a crab-waist collision scheme and an injector that provides top-up injections for both electron and positron beams.As a typical third-generation electron-positron circular collider,the STCF accelerator faces many challenges in both accelerator physics and technology.In this paper,the conceptual design of the STCF accelerator complex is presented,including the ongoing efforts and plans for technological research and develop-ment,as well as the required infrastructure.The STCF project aims to secure support from the Chinese central government for its construction during the 15th Five-Year Plan(2026-2030).展开更多
The increasing demand for high-resolution solar observations has driven the development of advanced data processing and enhancement techniques for ground-based solar telescopes.This study focuses on developing a pytho...The increasing demand for high-resolution solar observations has driven the development of advanced data processing and enhancement techniques for ground-based solar telescopes.This study focuses on developing a python-based package(GT-scopy)for data processing and enhancing for giant solar telescopes,with application to the 1.6 m Goode Solar Telescope(GST)at Big Bear Solar Observatory.The objective is to develop a modern data processing software for refining existing data acquisition,processing,and enhancement methodologies to achieve atmospheric effect removal and accurate alignment at the sub-pixel level,particularly within the processing levels 1.0-1.5.In this research,we implemented an integrated and comprehensive data processing procedure that includes image de-rotation,zone-of-interest selection,coarse alignment,correction for atmospheric distortions,and fine alignment at the sub-pixel level with an advanced algorithm.The results demonstrate a significant improvement in image quality,with enhanced visibility of fine solar structures both in sunspots and quiet-Sun regions.The enhanced data processing package developed in this study significantly improves the utility of data obtained from the GST,paving the way for more precise solar research and contributing to a better understanding of solar dynamics.This package can be adapted for other ground-based solar telescopes,such as the Daniel K.Inouye Solar Telescope(DKIST),the European Solar Telescope(EST),and the 8 m Chinese Giant Solar Telescope,potentially benefiting the broader solar physics community.展开更多
文摘本文报道新记录湖南省石松类与蕨类植物10种,分别为:结脉黑桫椤Gymnosphaera bonii(Christ) S. Y. Dong、陕西粉背蕨Aleuritopteris argentea var.obscura(Christ) Ching、叶基宽铁角蕨Asplenium pulcherrimum Ching ex Tardieu、中华膜叶铁角蕨Hymenasplenium sinense K. W. Xu、培善膜叶铁角蕨Hymenasplenium wangpeishanii Li Bing Zhang&K. W. Xu、蓝色鳞毛蕨Dryopteris polita Rosenst.、霞客鳞毛蕨Dryopteris shiakeana H. Shang&Y. H. Yan、有盖鳞毛蕨Dryopteris hendersonii(Bedd.) C. Chr.、大齿叉蕨Tectaria coadunata(J. Smith) C. Chr.和棕毛轴脉蕨Tectaria setulosa(Baker) Holttum。
文摘目的 观察自噬在IL-1β促进INS-1胰岛β细胞凋亡中的作用。方法 体外培养大鼠INS-1胰岛β细胞株,给予不同浓度IL-1β干预,用CCK-8法检测在不同作用时间点INS-1细胞的存活率;用Western blot技术检测不同IL-1β浓度下自噬相关蛋白LC3、Beclin1、P62的表达水平;Western blot法和流式细胞术检测INS-1细胞的凋亡水平。结果 IL-1β可以降低INS-1细胞的存活率,且呈浓度及时间依赖性( P <0.05, P <0.01)。与对照组相比,随着IL-1β浓度的增高,INS-1细胞凋亡水平逐渐升高( P <0.05),且细胞自噬水平也随着IL-1β浓度的增高而逐渐增高(自噬相关蛋白LC3、Beclin1表达上升,P62降低, P <0.05)。采用自噬激动剂雷帕霉素预处理细胞上调自噬可进一步增加IL-1β诱导的细胞凋亡,而用自噬抑制剂3-MA预处理抑制细胞自噬后则可逆转IL-1β诱导的INS-1胰岛细胞凋亡。结论 IL-1β通过诱导自噬增加促进INS-1胰岛β细胞凋亡。
基金supported by the National Key Research and Development Program of China(No.2022YFA1602200)the National Natural Science Foundation of China(Nos.12341501 and 12405174)the Hefei Comprehensive National Science Center for the strong support on the STCF key technology research project.
文摘Electron-positron colliders operating in the GeV center-of-mass range,or tau-charm energy region,have been proved to enable competitive frontier research due to several unique features.With the progress of high-energy physics in the last two decades,a new-generation Tau-Charm factory,called the Super Tau-Charm Facility(STCF),has been actively promoted by the particle physics community in China.STCF has the potential to address fundamental questions such as the essence of color confinement and the matter-antimatter asymmetry within the next decades.The main design goals of the STCF are a center-of-mass energy ranging from 2 to 7 GeV and a luminosity surpassing 5×10^(34)cm^(−2)s^(−1)that is optimized at a center-of-mass energy of 4 GeV,which is approximately 50 times that of the currently operating Tau-Charm factory-BEPCII.The STCF accelerator has two main parts:a double-ring collider with a crab-waist collision scheme and an injector that provides top-up injections for both electron and positron beams.As a typical third-generation electron-positron circular collider,the STCF accelerator faces many challenges in both accelerator physics and technology.In this paper,the conceptual design of the STCF accelerator complex is presented,including the ongoing efforts and plans for technological research and develop-ment,as well as the required infrastructure.The STCF project aims to secure support from the Chinese central government for its construction during the 15th Five-Year Plan(2026-2030).
基金supported by the National Natural Science Foundation of China(NSFC,12173012 and 12473050)the Guangdong Natural Science Funds for Distinguished Young Scholars(2023B1515020049)+2 种基金the Shenzhen Science and Technology Project(JCYJ20240813104805008)the Shenzhen Key Laboratory Launching Project(No.ZDSYS20210702140800001)the Specialized Research Fund for State Key Laboratory of Solar Activity and Space Weather。
文摘The increasing demand for high-resolution solar observations has driven the development of advanced data processing and enhancement techniques for ground-based solar telescopes.This study focuses on developing a python-based package(GT-scopy)for data processing and enhancing for giant solar telescopes,with application to the 1.6 m Goode Solar Telescope(GST)at Big Bear Solar Observatory.The objective is to develop a modern data processing software for refining existing data acquisition,processing,and enhancement methodologies to achieve atmospheric effect removal and accurate alignment at the sub-pixel level,particularly within the processing levels 1.0-1.5.In this research,we implemented an integrated and comprehensive data processing procedure that includes image de-rotation,zone-of-interest selection,coarse alignment,correction for atmospheric distortions,and fine alignment at the sub-pixel level with an advanced algorithm.The results demonstrate a significant improvement in image quality,with enhanced visibility of fine solar structures both in sunspots and quiet-Sun regions.The enhanced data processing package developed in this study significantly improves the utility of data obtained from the GST,paving the way for more precise solar research and contributing to a better understanding of solar dynamics.This package can be adapted for other ground-based solar telescopes,such as the Daniel K.Inouye Solar Telescope(DKIST),the European Solar Telescope(EST),and the 8 m Chinese Giant Solar Telescope,potentially benefiting the broader solar physics community.
