华东各地秋征工作已近结束,公粮已先后入仓,粮食保管工作已成为粮政部门当前的一个重要任务。入春以来,天气渐暖,空气温度增加,加以保管不善,有些地区已发生霉烂大批粮食的
通过对新疆罗布泊东南部阿奇克谷地西部LB剖面沉积物中粒度组分及磁化率特征的研究，综合沉积序列及岩性变化特征，分析了罗布泊阿奇克谷地第四系以来的沉积环境。结果表明：LB
A unified theoretical method is established to determine the charge-compensated C3v(Ⅱ)centers of Er3+ions in CdF2 and CaF2 crystals by simulating the electron
利用楼兰佛塔剖面主量元素分析结果和光释光测年结果重建了罗布泊地区早中全新世以来环境演化过程。楼兰佛塔剖面地球化学特征表明沉积物物源变化不大。泥质粉砂和粉砂质
By doping titanium hydride(TiH2)into boron carbide(B4C),a series of B4C+x wt％TiH2(x = 0,5,10,15,and 20)composite ceramics were obtained through spark plasma sint
上世纪八十年代,Heller和刘东生首先发现黄土地层不但可以忠实记录地磁场的变化历史,还可以记录古气候了高分辨率的古气候演化历史。磁化率是黄土古气候研究的常用指标之
Understanding the mechanism of the interfacial reaction between the cathode material and the electrolyte is a signif-icant work because the interfacial reaction
Both Nb and Mo additions play a vital role in FeCo-based alloys and it is crucial to understand their roles and contents on thermal behavior,microstructural fea
黄土高原风尘物源研究不仅为解释粉尘搬运动力和沉积后期风化成壤作用提供了前提，同时也为查明青藏高原隆升和全球气候变化对东亚季风-干旱环境的影响提供了可能。目前，在
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