Results 1 to 10 of about 1,013,710 (124)

[Association between wearable-derived physical activity patterns and gut microbiota in older adults]. [PDF]

open access: yesBeijing Da Xue Xue Bao Yi Xue Ban
Gao J   +9 more
europepmc   +1 more source

[Application of biological age for cardiovascular risk prediction in a community-based Chinese cohort]. [PDF]

open access: yesBeijing Da Xue Xue Bao Yi Xue Ban
Lu M   +9 more
europepmc   +1 more source

双城市土壤重金属空间分异及影响因子分析

open access: yesShuitu Baochi Xuebao, 2007
采用地理信息系统(GIS)和地统计学相结合的方法,研究了黑龙江省双城市的土壤全量铜、锌、铅、镍、镉5种重金属元素的空间分异规律及其影响因子。结果表明:研究区土壤锌、镍、镉具有强烈的空间相关性,表明这3种元素受土壤内在属性影响较大;而铜、铅具有中等强度的空间相关性,表明这2种元素由土壤内在属性和人为因素共同起作用。镉、铅、铜较锌、镍的变程小,说明前3种重金属元素含量可能主要受到较小尺度因子的影响。研究区土壤各重金属元素空间分异规律如下:铜和镍呈东高西低的趋势,铅呈南高北低的趋势 ...
史文娇   +4 more
doaj   +3 more sources

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