Changes in physical features of Glacier No. 1 of the Tianshan Mountains in response to climate change

This study analyzes the changes in glacier zones and snow composition of Glacier No.1 in the Tianshan Mountains of China since 1961,and their possible relations with climate.It is found that precipitation dominated the snow composition and that air temperature and precipitation controlled the distribution of glacier zones,but interannual change in precipitation had a relatively large effect on glacier zones and snow composition during 1963–1981 (P10) and 1963–1989 (P11).However,during 1982–2007 (P20) and 19...     

淬火速度对厚壁高压容器钢组织性能的影响

研究了35CrNi3MoV厚壁高压容器钢经不同速度淬火后的组织与性能，结果表明，淬火速度小于1000℃／h时，形成马氏体＋贝氏体混合组织。淬火速度在30-240℃／h时，由于大量的粒状小氏体及上贝氏体形成．使强度及冲击韧性降低，40℃冲击断口出现准解理特征．然而，淬火速度在380～1000℃／h时．少量的下贝氏体形成（贝氏体相对量小于30％），屈服强度和-40℃冲击断口（韧窝花样）则得到改善。初步分析了显微组织对力学性能的影响。     

Initial estimate of the contribution of cryospheric change in China to sea level rise

Recent studies have shown that cryospheric melting is becoming the dominant factor responsible for sea level rise,and that the melt-water from mountain glaciers and ice caps has comprised the majority of the cryospheric contribution since 2003.Analysis of the estimations of cryospheric melt-water and precipitation in glacier regions indicated that the potential contribution of the cryosphere in China is 0.14 to 0.16 mm a–1,of which approximately 0.12 mm a–1 is from glaciers.The contribution of glaciers in the outflow river basins is about 0.07 mm a–1,accounting for 6.4%of the total from global glaciers and ice caps.