Quantitative imaging of element spatial distribution in the brain section of a mouse model of Alzheimer's disease using synchrotron radiation X-ray fluorescence analysis
中国当代农村贫困大学毕业生就业难的前因后果 - 以广东地区为例 = The causes and consequences of difficulties for the college graduates of the rural poor to obtain employment in contemporary China : the case of Guangdong province