田间条件下Pb在土壤-水稻中的迁移特征?/Transfer characteristics of Pb in soil-rice system under field conditions[J]
, 2015 以湘中某工矿区农田为研究对象，野外定点采集红壤和紫色土母质水稻土耕层土壤及其对应样点水稻分蘖期和成熟期样品，分别使用富集系数、迁移系数和累积系数研究了Pb在土壤?水稻系统中的迁移特征．结果表明，成熟期水稻各部位 Pb含量为根＞茎叶＞稻壳＞糙米，其富集系数分别为55．07％、8．13％、2．47％、0?10％；迁移系数分蘖期为0．034％，成熟期0．080％，成熟期高于分蘖期（P＜0．01），成熟期迁移系数紫色土高于红壤（P＜0．01）；糙米累积系数红壤为0．40％，紫色土0．27％，红壤大于紫色土（P ...
HOU Hongbo +15 more
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[<i>Lactobacillus plantarum</i> alleviates lead exposure-induced learning and memory impairment in mice by regulating bile acid metabolism and inhibiting hippocampal NLRP3 expression]. [PDF]
Nan Fang Yi Ke Da Xue Xue BaoLi L, Yu W, Tan M, Li Y, Liu A, Meng X.
europepmc +1 more source
, 2008 本发明公开了一种便携式土壤呼吸测定气室，由底座和测量室组成，底座固定于土壤中，测量室放置在底座上；测量室包括一个中空的壳体，壳体内的顶部中央安装有风扇，壳体内的顶部两侧设有与红外气体分析仪连通的通气嘴，壳体的底部外围有插入底座的环体；底座包括一个圆筒，圆筒的外围设有供测量室插入的水槽，圆筒的底部沿外壁向内径方向制成锥形尖端。本发明的便携式土壤呼吸测定气室，采用底座和测量室分离设置，能够为红外气体分析仪提供分析气体源，从而计算土壤呼吸速率 ...
樊军,齐丽彬
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[Toxicity of lunar dust simulant exposure via the digestive system: Microbiota dysbiosis and multi-organ injury]. [PDF]
Zhong Nan Da Xue Xue Bao Yi Xue BanChen Y +8 more
europepmc +1 more source
[Determination of four fungicides in water by magnetic solid phase extraction-ultrahigh performance liquid chromatography-tandem mass spectrometry using covalent organic framework material]. [PDF]
Se Pu, 2022 Wang P, Ma J, Li S, Cheng J, Zou Z.
europepmc +1 more source
, 2010 分形理论在描述不规则几何图形方面的优越性十分显著。基于分形理论,对玛纳斯河流域土壤空间分布的分形性质进行了定量研究,在建立了玛纳斯河流域各土壤类型斑块周长-面积定量关系的基础上,进一步计算出各土壤类型在空间分布上的分维数与稳定性指数,得出以下结论:玛纳斯河流域各土壤类型斑块的周长-面积双对数关系显著,即玛纳斯河流域土壤空间分形结构客观存在。各土壤类型图斑的分维数存在差异,分维数最大的是草甸盐土,为1.7091,最小的是灌耕石灰性草甸土,为1.0524,分维数空间分布的总体趋势是由南向北逐渐变小 ...
刘世薇 +5 more
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[Research progress on bioartificial liver]. [PDF]
Zhonghua Gan Zang Bing Za ZhiJiang Q, Su YS, Cao XY, Zhang HN, Li LJ.
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[Preparation of porous boron nitride-doped polypyrrole-2,3,3-trimethylindole solid-phase microextraction coating for polycyclic aromatic hydrocarbon detection]. [PDF]
Se Pu, 2023 DU J +5 more
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[Value of C-peptide-based insulin resistance index for evaluating correlation between insulin resistance and serum uric acid level in individuals undergoing health examination]. [PDF]
Nan Fang Yi Ke Da Xue Xue Bao, 2023 Fang F +9 more
europepmc +1 more source
[Clinical analysis of donor-purified CD34(+) stem cell boost in 11 patients with poor hematopoietic reconstruction after haploid hematopoietic stem cell transplantation for aplastic anemia]. [PDF]
Zhonghua Xue Ye Xue Za ZhiHe Y +13 more
europepmc +1 more source