目的通过对《北京中医药大学学报》(以下简称《学报》)论文被美国《科学引文索引》扩展版(SCIE)收录的期刊论文引用情况进行定量分析,为《学报》发展提供相关参考依据。方法以Web of Science核心合集数据库为依据,在被引参考文献检索中...目的通过对《北京中医药大学学报》(以下简称《学报》)论文被美国《科学引文索引》扩展版(SCIE)收录的期刊论文引用情况进行定量分析,为《学报》发展提供相关参考依据。方法以Web of Science核心合集数据库为依据,在被引参考文献检索中,检索并分析《学报》论文被SCIE引用的情况及施引文献情况。结果 1995—2018年间,《学报》论文共有556篇在SCIE中被引用,总被引频次为879次,被引数量和被引频次均呈现抛物线状的趋势。施引文献共773篇论文,其年度分布总体呈上升趋势。被引论文第一作者机构主要为北京中医药大学。国家级基金资助课题的论文占比最高。被引频次高于5次的10篇论文分布在"科技之窗"栏目5篇、"理论研究"栏目4篇、"中医药实验研究"1篇。引用《学报》论文的期刊总体处于国际中等水平,结合补充医学、药理学和药剂学以及化学3个研究方向的引用论文最多。结论《学报》被SCIE收录期刊论文引用仅占总载文量的8.7%,在国内虽然有较高影响力,但国际影响力明显较低。"理论研究""科技之窗"栏目中的论文受关注度最高,可作为优势栏目保持并强化;可重点加强补充医学、药理学和药剂学以及化学这几个研究方向的组稿力度,并创新优化组稿,提升期刊影响力。展开更多
To study the effect of different deformation mechanisms on the chemical structure of anthracite coals and further understand the correlation between changed chemical structures and coal and gas outburst, ten groups of...To study the effect of different deformation mechanisms on the chemical structure of anthracite coals and further understand the correlation between changed chemical structures and coal and gas outburst, ten groups of sub-high-temperature and sub-high-pressure deformation experiments were performed. All samples maintained primary structure, which were collected from the Qudi Mine in the southern Qinshui Basin of China. The samples were analyzed by ultimate analysis, Vitrinite Reflection(VR), Fourier Transform Infrared spectroscopy(FTIR), and Raman spectroscopy both before and after deformation experiments for contrasting. The results showed that the VR values of all samples after experiments were significantly higher than before experiments, which suggested that the metamorphism degree of anthracite coals was increased by deformation. The results also indicated that both temperature and strain rate had significant effects on the chemical structure of anthracite coals. At a high strain rate of 4×10?5 s?1, the deformation of the samples was mainly brittle in which the mechanical energy was transformed mainly into frictional energy. In this situation, all samples developed several distinct fractured surfaces and the change of chemical structures was not obvious. On the contrary, with the decrease of the strain rates, the ductile deformation was dominated and the mechanical energy was mainly transformed into strain energy, resulting in the accumulation of deformation energy confessed by increasing quantity of dislocation and creep in the coal's interior nucleus. The absorption in the aromatic ring groups increased; otherwise the absorption in the aliphatic structures and ether oxygen groups decreased rapidly. During these experiments, CO was collected from two experimental samples. The number of aromatic rings and the structure defects within the two generated gas samples increased and the degree of molecular structure orders decreased.展开更多
文摘目的通过对《北京中医药大学学报》(以下简称《学报》)论文被美国《科学引文索引》扩展版(SCIE)收录的期刊论文引用情况进行定量分析,为《学报》发展提供相关参考依据。方法以Web of Science核心合集数据库为依据,在被引参考文献检索中,检索并分析《学报》论文被SCIE引用的情况及施引文献情况。结果 1995—2018年间,《学报》论文共有556篇在SCIE中被引用,总被引频次为879次,被引数量和被引频次均呈现抛物线状的趋势。施引文献共773篇论文,其年度分布总体呈上升趋势。被引论文第一作者机构主要为北京中医药大学。国家级基金资助课题的论文占比最高。被引频次高于5次的10篇论文分布在"科技之窗"栏目5篇、"理论研究"栏目4篇、"中医药实验研究"1篇。引用《学报》论文的期刊总体处于国际中等水平,结合补充医学、药理学和药剂学以及化学3个研究方向的引用论文最多。结论《学报》被SCIE收录期刊论文引用仅占总载文量的8.7%,在国内虽然有较高影响力,但国际影响力明显较低。"理论研究""科技之窗"栏目中的论文受关注度最高,可作为优势栏目保持并强化;可重点加强补充医学、药理学和药剂学以及化学这几个研究方向的组稿力度,并创新优化组稿,提升期刊影响力。
基金supported by National Natural Science Foundation of China(Grant No.41030422)Strategic Leading Special Science and Technology from Academy of Chinese Academy of Sciences(Grant No.XDA05030100)
文摘To study the effect of different deformation mechanisms on the chemical structure of anthracite coals and further understand the correlation between changed chemical structures and coal and gas outburst, ten groups of sub-high-temperature and sub-high-pressure deformation experiments were performed. All samples maintained primary structure, which were collected from the Qudi Mine in the southern Qinshui Basin of China. The samples were analyzed by ultimate analysis, Vitrinite Reflection(VR), Fourier Transform Infrared spectroscopy(FTIR), and Raman spectroscopy both before and after deformation experiments for contrasting. The results showed that the VR values of all samples after experiments were significantly higher than before experiments, which suggested that the metamorphism degree of anthracite coals was increased by deformation. The results also indicated that both temperature and strain rate had significant effects on the chemical structure of anthracite coals. At a high strain rate of 4×10?5 s?1, the deformation of the samples was mainly brittle in which the mechanical energy was transformed mainly into frictional energy. In this situation, all samples developed several distinct fractured surfaces and the change of chemical structures was not obvious. On the contrary, with the decrease of the strain rates, the ductile deformation was dominated and the mechanical energy was mainly transformed into strain energy, resulting in the accumulation of deformation energy confessed by increasing quantity of dislocation and creep in the coal's interior nucleus. The absorption in the aromatic ring groups increased; otherwise the absorption in the aliphatic structures and ether oxygen groups decreased rapidly. During these experiments, CO was collected from two experimental samples. The number of aromatic rings and the structure defects within the two generated gas samples increased and the degree of molecular structure orders decreased.
