The waveform data recorded during the site survey of the Naqu seismic array in Aug. 2004 were processed by the author. According to the relativity of site pairs in time and frequency domains, the reference values of t...The waveform data recorded during the site survey of the Naqu seismic array in Aug. 2004 were processed by the author. According to the relativity of site pairs in time and frequency domains, the reference values of the inner ring and outer ring were determined. The author evaluated the array deployed for site survey as the primary array, and the results show that the resolution of the primary array is high enough to locate earthquakes precisely.展开更多
With the shift in the economic paradigm,there has been a notable increase in the number of young herders in Xizang who have moved to urban areas in search of employment opportunities or have attained financial indepen...With the shift in the economic paradigm,there has been a notable increase in the number of young herders in Xizang who have moved to urban areas in search of employment opportunities or have attained financial independence and separated from their original families.These changes in family structure will gradually impact the elderly population who rely on familial support within traditional cultural contexts.Some elderly herdsmen have lost family support due to unfortunate family accidents or a lack of assistance resulting from the absence of biological descendants.The paper presents an argument about the transition of elder care in pastoral areas.It suggests a shift from the traditional family-based model to a dual mode that combines both family elder care and social elder care.This transformation was facilitated by economic growth at the regional level,which was a result of the overall development of the Chinese economy.This growth was particularly evident after the peaceful liberation of Tibet and the establishment of a modern national social elder service system in pastoral areas.The welfare system provides a way for elderly individuals who are living alone, widows, and disabled individuals toaccess practical institutional pension security. The national institutional pension model hasemerged as a way for marginalized elderly populations to instinctively perceive andcomprehend the assistance by the state.展开更多
广西那渠地区铀成矿潜力巨大,与铀共生的钼矿也达到可综合利用的程度。然而目前该区钼矿系统的勘查工作依然缺乏,致使钼矿的找矿勘查依据不足。为了优选那渠地区钼矿找矿靶区,在该区开展了1:10000土壤地球化学测量工作。系统采集了3295...广西那渠地区铀成矿潜力巨大,与铀共生的钼矿也达到可综合利用的程度。然而目前该区钼矿系统的勘查工作依然缺乏,致使钼矿的找矿勘查依据不足。为了优选那渠地区钼矿找矿靶区,在该区开展了1:10000土壤地球化学测量工作。系统采集了3295件土壤样品,分析了土壤中Au、Ag、As、Bi、Hg、W、Mo、Cu、V和Ti共10种元素的含量。多元统计分析显示Mo是该地区主成矿元素之一。运用统计学软件SPSS 22对原始数据进行R型聚类分析和R型因子分析,划分出Ag-Cu-V、Bi-Ti-W、As-Mo、Au和Hg五组成矿元素组合。采用衬度异常法计算各元素和元素组合的异常下限,运用Geochem Studio 3.5软件将各成矿元素组合衬度数据处理并绘制成异常图,结合地质条件共预测圈出3个找矿靶区。对Ⅰ号找矿靶区进行探槽和钻探工程验证,发现了一个工业钼矿体,钼品位0.11%~0.15%,平均值0.112%。对Ⅱ号找矿靶区开展探槽工程验证,通过刻槽取样分析,显示钼品位均达到了矿化标准。研究结果指示那渠地区钼的成矿潜力较大。展开更多
基金The research was under the construction of the Naquseismic array of Chinese Digital Seismography Observation Networkin National 10th Five-Year Program.
文摘The waveform data recorded during the site survey of the Naqu seismic array in Aug. 2004 were processed by the author. According to the relativity of site pairs in time and frequency domains, the reference values of the inner ring and outer ring were determined. The author evaluated the array deployed for site survey as the primary array, and the results show that the resolution of the primary array is high enough to locate earthquakes precisely.
文摘With the shift in the economic paradigm,there has been a notable increase in the number of young herders in Xizang who have moved to urban areas in search of employment opportunities or have attained financial independence and separated from their original families.These changes in family structure will gradually impact the elderly population who rely on familial support within traditional cultural contexts.Some elderly herdsmen have lost family support due to unfortunate family accidents or a lack of assistance resulting from the absence of biological descendants.The paper presents an argument about the transition of elder care in pastoral areas.It suggests a shift from the traditional family-based model to a dual mode that combines both family elder care and social elder care.This transformation was facilitated by economic growth at the regional level,which was a result of the overall development of the Chinese economy.This growth was particularly evident after the peaceful liberation of Tibet and the establishment of a modern national social elder service system in pastoral areas.The welfare system provides a way for elderly individuals who are living alone, widows, and disabled individuals toaccess practical institutional pension security. The national institutional pension model hasemerged as a way for marginalized elderly populations to instinctively perceive andcomprehend the assistance by the state.
文摘广西那渠地区铀成矿潜力巨大,与铀共生的钼矿也达到可综合利用的程度。然而目前该区钼矿系统的勘查工作依然缺乏,致使钼矿的找矿勘查依据不足。为了优选那渠地区钼矿找矿靶区,在该区开展了1:10000土壤地球化学测量工作。系统采集了3295件土壤样品,分析了土壤中Au、Ag、As、Bi、Hg、W、Mo、Cu、V和Ti共10种元素的含量。多元统计分析显示Mo是该地区主成矿元素之一。运用统计学软件SPSS 22对原始数据进行R型聚类分析和R型因子分析,划分出Ag-Cu-V、Bi-Ti-W、As-Mo、Au和Hg五组成矿元素组合。采用衬度异常法计算各元素和元素组合的异常下限,运用Geochem Studio 3.5软件将各成矿元素组合衬度数据处理并绘制成异常图,结合地质条件共预测圈出3个找矿靶区。对Ⅰ号找矿靶区进行探槽和钻探工程验证,发现了一个工业钼矿体,钼品位0.11%~0.15%,平均值0.112%。对Ⅱ号找矿靶区开展探槽工程验证,通过刻槽取样分析,显示钼品位均达到了矿化标准。研究结果指示那渠地区钼的成矿潜力较大。
