The driving mechanism of solar flares and coronal mass ejections is a topic of ongoing debate, apart from the consensus that magnetic reconnection plays a key role during the impulsive process. While present solar res...The driving mechanism of solar flares and coronal mass ejections is a topic of ongoing debate, apart from the consensus that magnetic reconnection plays a key role during the impulsive process. While present solar research mostly depends on observations and theoretical models, laboratory experiments based on high-energy density facilities provide the third method for quantitatively comparing astrophysical observations and models with data achieved in experimental settings.In this article, we show laboratory modeling of solar flares and coronal mass ejections by constructing the magnetic reconnection system with two mutually approaching laser-produced plasmas circumfused of self-generated megagauss magnetic fields. Due to the Euler similarity between the laboratory and solar plasma systems, the present experiments demonstrate the morphological reproduction of flares and coronal mass ejections in solar observations in a scaled sense,and confirm the theory and model predictions about the current-sheet-born anomalous plasmoid as the initial stage of coronal mass ejections, and the behavior of moving-away plasmoid stretching the primary reconnected field lines into a secondary current sheet conjoined with two bright ridges identified as solar flares.展开更多
Recently,cases of severe acute hepatitis of unknown cause(SAHUC)in children have suddenly increased in the United States,the United Kingdom,and other countries.In order to understand the progress in the diagnosis and ...Recently,cases of severe acute hepatitis of unknown cause(SAHUC)in children have suddenly increased in the United States,the United Kingdom,and other countries.In order to understand the progress in the diagnosis and treatment of this disease,and to prepare for the relevant plans in advance,the“Expert Symposium on the Severe Acute Hepatitis of Unknown Cause in Children”was successfully held on May 13,2022,online organized by Beijing Children's Hospital(BCH),Capital Medical University,Beijing Institute of Pediatrics Integrated Chinese and Western Medicine,Futang Research Center of Pediatric Development,and Branch of Hepatobiliary Diseases,China Association of Chinese Medicine.More than 9200 people watched the meeting online.Professors Yan Hu,Yan Yang,and Jing Hao,from the Department of Traditional Chinese Medicine(TCM),BCH,Capital Medical University,hosted the symposium.展开更多
基金jointly supported by the National Natural Science Foundation of China (Nos. 11121504, 11074297, 11274152)the CAS project of KJCX2-YWT01the National Basic Research Program of China (No. 2007CB815101)
文摘The driving mechanism of solar flares and coronal mass ejections is a topic of ongoing debate, apart from the consensus that magnetic reconnection plays a key role during the impulsive process. While present solar research mostly depends on observations and theoretical models, laboratory experiments based on high-energy density facilities provide the third method for quantitatively comparing astrophysical observations and models with data achieved in experimental settings.In this article, we show laboratory modeling of solar flares and coronal mass ejections by constructing the magnetic reconnection system with two mutually approaching laser-produced plasmas circumfused of self-generated megagauss magnetic fields. Due to the Euler similarity between the laboratory and solar plasma systems, the present experiments demonstrate the morphological reproduction of flares and coronal mass ejections in solar observations in a scaled sense,and confirm the theory and model predictions about the current-sheet-born anomalous plasmoid as the initial stage of coronal mass ejections, and the behavior of moving-away plasmoid stretching the primary reconnected field lines into a secondary current sheet conjoined with two bright ridges identified as solar flares.
文摘Recently,cases of severe acute hepatitis of unknown cause(SAHUC)in children have suddenly increased in the United States,the United Kingdom,and other countries.In order to understand the progress in the diagnosis and treatment of this disease,and to prepare for the relevant plans in advance,the“Expert Symposium on the Severe Acute Hepatitis of Unknown Cause in Children”was successfully held on May 13,2022,online organized by Beijing Children's Hospital(BCH),Capital Medical University,Beijing Institute of Pediatrics Integrated Chinese and Western Medicine,Futang Research Center of Pediatric Development,and Branch of Hepatobiliary Diseases,China Association of Chinese Medicine.More than 9200 people watched the meeting online.Professors Yan Hu,Yan Yang,and Jing Hao,from the Department of Traditional Chinese Medicine(TCM),BCH,Capital Medical University,hosted the symposium.
