Results 51 to 60 of about 429 (110)

[Determination of seven paraben preservatives in aquatic seasoning using solid-phase extraction coupled with high performance liquid chromatography]. [PDF]

Se Pu, 2023
Ning XP, Yao Q, Xu ZX, Yin Y, Liu H, Zhang XY, Ding T, Zhang Y, Hou Y, Wang MR, Wu LN, Tang QT.   +11 more
europepmc   +1 more source

不同施氮水平下油菜地土壤氮素径流流失特征研究

Shuitu Baochi Xuebao, 2011
采用野外田间试验,研究了浙北平原不同施氮水平对油菜地土壤氮素流失形态与含量的影响。结果表明,施肥的时间与降雨间隔对氮素的流失形态和浓度有明显影响,硝态氮是氮素流失的主要形态,占流失无机氮的比例为0.56～0.95;但若施肥后短期内降雨,铵态氮流失占有量增加,占流失无机氮的比例为0.37～0.42;氮素的流失量与施肥水平明显相关,每1hm2土壤增加氮素用量60kgN时,流失负荷增加2.5%～16.1%;采用有机无机配施的模式可使油菜地土壤氮素流失减少8.6%～16.3%,有效降低径流水中氮素浓度 ...
俞巧钢, 叶静, 马军伟, 孙万春, 王强, 姜丽娜, 符建荣, 陈义   +7 more
doaj  

[Determination of dazomet and its metabolite methyl isothiocyanate residues in plant-derived foods by gas chromatography-triple quadrupole mass spectrometry]. [PDF]

Se Pu, 2022
Rong J, Xu M, Zhang Z, Zou Q, Xu D, Zhong J, Zhang S, LE Y, She Z.   +8 more
europepmc   +1 more source

铅-锌-镉复合污染物在土壤-芥菜/油菜系统中的迁移及交互作用

Shuitu Baochi Xuebao, 2007
了解重金属复合污染物在土壤-植物系统中的迁移分配情况对污染土壤的安全利用、土壤环境质量标准的修订以及重金属污染土壤的植物修复具有重要意义。通过盆栽试验,以芥菜和油菜为例,研究了铅-锌-镉复合污染物在土壤-植物系统中的迁移分配情况。结果表明:与对照相比,复合污染条件下,芥菜和油菜体内重金属含量显著提高,且Cd含量的提高程度要远远高于Pb和Zn;芥菜和油菜对Cd的吸收达到了100 m g/kg以上,表现出超富集植物的吸收水平。重金属的富集系数大小依次为Cd>Zn>Pb,地下部富集系数要高于地上部 ...
许中坚, 吴灿辉, 邱喜阳, 张华
doaj  

[A case of neonatal-onset type I hyperlipoproteinemia with bloody ascites]. [PDF]

Zhongguo Dang Dai Er Ke Za Zhi, 2023
Chen YY, Hu LY, Zhang K, Zhang XP, Cao Y, Yang L, Wu BB, Zhou WH, Wang J.   +8 more
europepmc   +1 more source

[Analysis of dietary composition in patients with liver cirrhosis: an observational study based on the database from the National Health and Nutrition Examination survey]. [PDF]

Zhonghua Gan Zang Bing Za Zhi
Chen XY, Yu ZQ, Bai XY, Ruan GC, Guo MY, Han W, Yang H.   +6 more
europepmc   +1 more source

[Progress in the application of novel nano-materials to the safety analysis of agricultural products]. [PDF]

Se Pu, 2023
Zhou RF, Zhang HX, Yin XL, Peng XT.
europepmc   +1 more source

[Simultaneous determination of 15 bisphenols in prepared dishes by soild phase extraction purification-ultra performance liquid chromatography-tandem mass spectrometry]. [PDF]

Se Pu
Zhan ZY, Zhang Q, Tian SS, Zhao ZW, Dai YY, Liu BL.   +5 more
europepmc   +1 more source

[Determination of squalene and oxidized squalene in edible oil by gas chromatography-tandem mass spectrometry and evaluation of the thermal stability of squalene]. [PDF]

Se Pu
Xiao GP, Liao DD, Li GS, Luo X, Yuan L.
europepmc   +1 more source

A text-speech multimodal Chinese named entity recognition model for crop diseases and pests. [PDF]

Sci Rep
Liu R, Guo X, Zhu H, Wang L.
europepmc   +1 more source