Using the method recently developed by Gan et al. (2001a,2002),We investigate the time variation of the lower energy cutoff (Ec) of nonthermal electrons for thr
4月29日23时02分，宁德核电站一期4号机组并网发电成功，标志着该机组具备发电能力，有望于今年下半年正式投入商业运营。
The bulk kinetic energy of jets can be dissipated via generating turbulent plasma waves. We examine stochastic particle acceleration in blazar jets to explain t
The ancient record 'Tian-da-yi' (the sky darkened greatly) is identified with the solar eclipse on May 31, 976BC. This identification is demonstrated in
"经济整合"是指两个或两个以上的公司紧密联系的方式.现今,经济整合在旅游业中相当常见.旅游企业间的经济整合可作如下分类:(1)按整合方向分为垂直整合、水平整合、聚集整合;
Magnetic fields are observed everywhere in the universe.In this review,we concentrate on the observational aspects of the magnetic fields of Galactic and extrag
传统观点认为,道德都是利他的,即使利于道德行为者,也只能给其带来某些精神利益。其实,作为道德基础的道德利益不仅指他利,也包含着自利,自利的内容既有精神性的,又有物质性
Gamma-ray bursts (GRBs) are the most intense transient gamma-ray events in the sky; this, together with the strong evidence (the isotropic and in homogeneous di
2月15日，三门核电站1号机组最后一台主泵吊装工作圆满完成，这标志着三门核电站1号机组4台主泵吊装工作全部圆满完成。