Shock-timing experiments are indispensable to inertial confinement fusion mainly because the timing of multiple shock waves is crucial to understanding the processes of laser irradiation of targets. Investigations int...Shock-timing experiments are indispensable to inertial confinement fusion mainly because the timing of multiple shock waves is crucial to understanding the processes of laser irradiation of targets. Investigations into shock waves driven by a two-step radiation pulse in polystyrene（CH） capsule targets are experimentally conducted at the Shen Guang Ⅱ laser facility. Differing from the traditional shock-timing implementation in which one shock wave could catch up with another one in solid CH, in this experiment, the second shock front in a rarefaction CH layer is observed through velocity interferometry. This second shock could also be made to converge with rarefaction waves within only a few micrometers of the CH capsule by designing the two-shock coalescence time. A shock-timing diagnostic technique to tune the multi-shock convergence in the CH capsule can thereby be achieved.The experimental results in the CH layer are quasi-quantitatively interpreted using streamlines simulated with the Multi-1 D program. The experimental results are expected to offer important information for target structure and laser pulse design, both of which are important for realizing inertial confinement fusion.展开更多
Hickman's fast nonadiabatic collision model for the ion-pair formation reaction A+BC→A^++BC^- was improved,where the classical trajectory has been represented by solution of motion equation UR=-dV(R)/dR, here V(R...Hickman's fast nonadiabatic collision model for the ion-pair formation reaction A+BC→A^++BC^- was improved,where the classical trajectory has been represented by solution of motion equation UR=-dV(R)/dR, here V(R)is Morse potential.Employing this model to the CS+O_2→CS^++O_2^-reaction,a satisfactory agreement with experimental data has been obtained.展开更多
By investigating species, characteristics and landscaping application of colored-leaf species in Guang'an City, this paper proposed suggestions for the application of colored-leaf species in the local area.
1996,It was the first year of implementing China’s ninth"Five Year Plan".In that year,China’s foreigneconomy & trade policy had been greatly read-justed. Despite so many difficulties and new challenges...1996,It was the first year of implementing China’s ninth"Five Year Plan".In that year,China’s foreigneconomy & trade policy had been greatly read-justed. Despite so many difficulties and new challenges,GuangDong had taken a series of powerful measures on utilizingforeign capital and encouraging imports and exports.Export tradehad continuously increased, reform of enterprises had a greaterbreakthrough,The foreign capitals actually utilized had maintaineda good momentum of development.Looking back upon the passed year,the total annual importand export value of GuangDong had reached USD 110.04 bil-lion.of which the export amounted to USD 59.34 billion,whichis 37.9 percent of total annual Imp.& Exp.Value of the Country.Imports amounted $ 50.7 billion,foreign capital actually usedreached USD 13.9 billion, they were respectively up 5.8 percent,6.8 percent and 14 percent from the previous year.GuangDong’simports and exports emphasized efficient growth.It had展开更多
For wild natural medicine,unanticipated biodiversity as species or varieties with similar morphological characteristics and sympatric distribution may co-exist in a single batch of medical materials,which affects the ...For wild natural medicine,unanticipated biodiversity as species or varieties with similar morphological characteristics and sympatric distribution may co-exist in a single batch of medical materials,which affects the efficacy and safety of clinical medication.DNA barcoding as an effective species identification tool is limited by its low sample throughput nature.In this study,combining DNA minibarcode,DNA metabarcoding and species delimitation method,a novel biological sources consistency evaluation strategy was proposed,and high level of interspecific and intraspecific variations were observed and validated among 5376 Amynthas samples from 19 sampling points regarded as"Guang Dilong"and 25 batches of proprietary Chinese medicines.Besides Amynthas aspergillum as the authentic source,8 other Molecular Operational Taxonomic Units(MOTUs)were elucidated.Significantly,even the subgroups within A.aspergillum revealed here differ significantly on chemical compositions and biological activity.Fortunately,this biodiversity could be controlled when the collection was limited to designated areas,as proved by 2796"decoction pieces"samples.This batch biological identification method should be introduced as a novel concept regarding natural medicine quality control,and to offer guidelines for in-situ conservation and breeding bases construction of wild natural medicine.展开更多
基金Supported by the Science and Technology on Plasma Physics Laboratory under Grant No 9140C6801021001
文摘Shock-timing experiments are indispensable to inertial confinement fusion mainly because the timing of multiple shock waves is crucial to understanding the processes of laser irradiation of targets. Investigations into shock waves driven by a two-step radiation pulse in polystyrene（CH） capsule targets are experimentally conducted at the Shen Guang Ⅱ laser facility. Differing from the traditional shock-timing implementation in which one shock wave could catch up with another one in solid CH, in this experiment, the second shock front in a rarefaction CH layer is observed through velocity interferometry. This second shock could also be made to converge with rarefaction waves within only a few micrometers of the CH capsule by designing the two-shock coalescence time. A shock-timing diagnostic technique to tune the multi-shock convergence in the CH capsule can thereby be achieved.The experimental results in the CH layer are quasi-quantitatively interpreted using streamlines simulated with the Multi-1 D program. The experimental results are expected to offer important information for target structure and laser pulse design, both of which are important for realizing inertial confinement fusion.
文摘Hickman's fast nonadiabatic collision model for the ion-pair formation reaction A+BC→A^++BC^- was improved,where the classical trajectory has been represented by solution of motion equation UR=-dV(R)/dR, here V(R)is Morse potential.Employing this model to the CS+O_2→CS^++O_2^-reaction,a satisfactory agreement with experimental data has been obtained.
基金Sponsored by Research Program of Sichuan Provincial Department of Education(14ZB0390)
文摘By investigating species, characteristics and landscaping application of colored-leaf species in Guang'an City, this paper proposed suggestions for the application of colored-leaf species in the local area.
文摘1996,It was the first year of implementing China’s ninth"Five Year Plan".In that year,China’s foreigneconomy & trade policy had been greatly read-justed. Despite so many difficulties and new challenges,GuangDong had taken a series of powerful measures on utilizingforeign capital and encouraging imports and exports.Export tradehad continuously increased, reform of enterprises had a greaterbreakthrough,The foreign capitals actually utilized had maintaineda good momentum of development.Looking back upon the passed year,the total annual importand export value of GuangDong had reached USD 110.04 bil-lion.of which the export amounted to USD 59.34 billion,whichis 37.9 percent of total annual Imp.& Exp.Value of the Country.Imports amounted $ 50.7 billion,foreign capital actually usedreached USD 13.9 billion, they were respectively up 5.8 percent,6.8 percent and 14 percent from the previous year.GuangDong’simports and exports emphasized efficient growth.It had
基金supported by Foundation Science and Technology Program of Tianjin(No.22ZYJDSS00040,20ZYJDJC00120,China)Foundation CACMS Innovation Fund(No.CI2021A04104,China)Foundation Key project at central government level:The ability establishment of sustainable use for valuable Chinese medicine resources(No.2060302,China)。
文摘For wild natural medicine,unanticipated biodiversity as species or varieties with similar morphological characteristics and sympatric distribution may co-exist in a single batch of medical materials,which affects the efficacy and safety of clinical medication.DNA barcoding as an effective species identification tool is limited by its low sample throughput nature.In this study,combining DNA minibarcode,DNA metabarcoding and species delimitation method,a novel biological sources consistency evaluation strategy was proposed,and high level of interspecific and intraspecific variations were observed and validated among 5376 Amynthas samples from 19 sampling points regarded as"Guang Dilong"and 25 batches of proprietary Chinese medicines.Besides Amynthas aspergillum as the authentic source,8 other Molecular Operational Taxonomic Units(MOTUs)were elucidated.Significantly,even the subgroups within A.aspergillum revealed here differ significantly on chemical compositions and biological activity.Fortunately,this biodiversity could be controlled when the collection was limited to designated areas,as proved by 2796"decoction pieces"samples.This batch biological identification method should be introduced as a novel concept regarding natural medicine quality control,and to offer guidelines for in-situ conservation and breeding bases construction of wild natural medicine.
