The mountain range of western Sichuan Province of China runs roughly north to south defining the eastern edge of the Tibetan Plateau, where high-resolution climate records are essential for understanding regional climatic phenomena. Unfortunately, instrumental records in this region are too short in duration to confidently gauge the long-term variability of climate change. This paper presented a temperature reconstruction for the western Sichuan Province based on a tree ring width chronology developed from a tree line site (4,150 m) of the Faxon fir (Abies faxoniana) at the Miyaluo Natural Reserve. This reconstruction, spanning the years from 1824 to 2009, could account for 46.7 % of the actual variance of annual mean temperature during the calibration period from 1950 to 2002. The reconstruction could be essentially divided into two distinct subperiods: a relatively cold and stable period in the late nineteenth century and a relatively warm and unstable period in the twentieth century. Years 2001 and 1911 were the warmest (6.32°C) and coldest (4.87°C) years in the reconstruction, respectively, while 1960s (5.77°C) and 1980s (5.08°C) were the warmest and coldest ten consecutive years within the past 186 years. Close coupling observed with other temperature proxies (tree rings, ice cores, and glaciers) from surrounding areas emphasized the high degree of confidence in our reconstruction. nologies to be developed (Körner and Paulsen 2004).Consequently, this region should have great potential for dendroclimatological studies. Unfortunately, tree ring studies in western Sichuan have received surprising little attention by

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In this study, we investigated whether the inhibition of endogenous phosphorylation of mitogen-activated protein kinase (MAPK) and diallyl disulfide (DADS)-induced phosphorylation of MAPKs with MAPK specific inhibitors, SB203580 and U0126 (for phospho-p38 and phospho-p42/p44, respectively), can induce or enhance apoptosis in human CNE2 nasopharyngeal carcinoma cells. Our data demonstrate that MAPK inhibitors decrease the viability of CNE2 cells, stimulate typical apoptotic morphologic changes, and enhance DADS-induced apoptosis. The present findings indicate that phosphorylation of MAPKs plays an important cytoprotective role in CNE2 cell apoptosis and the DADS-induced apoptotic process.

According to the license plate recognition problem, this paper did the research about license plate location and characters recognition. It proposed two new algorithms, they separately are license location algorithm based on color segmentation and fault-tolerant characters recognition algorithm based on BP neural network. In the pre-processing stage, it proposed image enhancement algorithm which could make the image more easily analyzed by computer. In the location stage, it made utilization of color and shape information, and then proposed location algorithm. In the recognition stage, it fully made the consideration of characters fault-tolerant, and then made the use of improved BP neural network to recognize characters. Experiments show that the special license plate fault-tolerant characters recognition algorithm is more accurate than the original license plate recognition methods, and its recognition rate has been improved greatly.

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