Statistical study of magnetotail flux ropes near the lunar orbit

Flux-rope/TCR events near the magnetotail lunar orbit(-67R_E GSM X* -39RE) were studied using magnetic-field and plasma data measured by THEMIS B and C between January 2011 and March 2012. The aberrant coordinate GSM*, where the X* axis is rotated 4° relative to GSM-X, was used to count the occurrence rate. The number ratio of earthward to tailward events was about 3:5. Moreover, the event occurrence rate distribution showed a clear dawn-dusk asymmetry distribution, with dusk-side events accounting for 57.98%. A superposed epoch analysis of the flux-rope events showed that earthward events had a shorter duration in the leading than in the trailing part. Earthward events also displayed a lower temperature and a lower flow speed than tailward events. We studied the relationship between the event occurrence rate and geomagnetic activity level even further. The occurrence rate of tailward flux-rope/TCR events increases with increasing AE-index, whereas earthward events occur mainly in the relatively quiet period of geomagnetic activity(AE ~ 100–300 n T). Flux-rope/TCR events identified within a 10 mm time frame were treated as belonging to a single reconnection event. By comparing the occurrence rates of earthward and tailward events along X*, we estimated the most likely location of the near-Earth reconnection site as X* = -36R_E.     

灰分快速测定在选煤厂调控中的应用

介绍田庄选煤厂内部生产调控中采用灰分快速测定方法，并运用成对对比法对其应用情况进行分析；阐述了方法的可行性，为同类厂提供参考。     

中国肉制品分类方法的探讨

世界上肉制品种类繁多,加工程度和方法各异,风味也不尽相同。即使同一种肉制品,不同地区命名也有差异,且新产品还在不断涌现。现迄今世界上还没有一个公认的肉制品分类方法。我国1992年提出了肉制品标准,将我国的肉制品分为9大门类。本文对中式火腿、中式腊肠、鲜肠制品、发酵肉制品等的归属进行了探讨,在我国1992年提出的肉制品分类标准基础上提出了将肉制品分为11大类的方法,与同行专家探讨。