Results 51 to 60 of about 189 (104)

[Research progress on interference in the identification of accelerants in a fire scene]. [PDF]

Se Pu, 2022
Yin G, Qian P, Liqiu F, Jin J, Liu L, Zhang J.   +5 more
europepmc   +1 more source

侵蚀环境退耕撂荒地水稳性团聚体演变特征及土壤养分效应

Shuitu Baochi Xuebao, 2007
研究了侵蚀环境退耕撂荒地生态恢复过程中水稳性团聚体的变化规律及其与土壤养分状况及土壤微生物量的关系，结果表明，侵蚀环境退耕撂荒地土壤水稳性团聚体含量迅速提高，在退耕撂荒的第一个10年，水稳性团聚体增大约253．45％。随着退耕撂荒年限的延长，其增大幅度趋缓，第10～50年，水稳性团聚体仅增大16．42％，之后增大幅度更加缓慢，接近一个稳定的水平。相关性分析和回归分析表明侵蚀环境退耕地撂荒后土壤中〉0．25mm水稳性团聚体与土壤的有机碳、全氮、速磷、碳酸钙、微生物量（C，N，P）、CEC关系密切，达到显著（
戴全厚, 刘国彬, 薛萐, 翟胜, 李小利   +4 more
doaj  

[Determination of 15 carbonyl compounds in soil using improved solid phase extraction-high performance liquid chromatography]. [PDF]

Se Pu, 2023
Xue KP, Yu LY, Ren XF, Tu BF, Chen C, Xu T, He H, Hu S.   +7 more
europepmc   +1 more source

[Chemical diversity of dissolved organic matter revealed by ultra performance liquid chromatography-Fourier transform ion cyclotron resonance mass spectrometry]. [PDF]

Se Pu, 2023
Ma C, Ni HX, Qi YL.
europepmc   +1 more source

闽北典型毛竹林土壤微团聚体分形特征研究

Shuitu Baochi Xuebao, 2008
以中亚带常绿阔叶林和杉木林为对照,对闽北典型竹林土壤微团聚体分形维数变化特征及其与土壤物理性质、化学性质、土壤酶活性及微生物数量的关系进行了研究,结果表明:>0.25 mm和0.05~0.01 mm颗粒含量越高,0.25~0.05 mm,0.005~0.001 ...
ZHANG Chang-shun, FAN Shao-huiQI Liang-hua, LIU Guang-lu   +2 more
doaj  

[Recent advances in the use of graphene for sample preparation]. [PDF]

Se Pu, 2022
Feng J, Sun M, Feng Y, Xin X, Ding Y, Sun M.   +5 more
europepmc   +1 more source

不同炭基改良剂提升紫色土蓄水保熵能力

Shuitu Baochi Xuebao, 2017
通过连续2年田间试验，研究了5种改良剂：秸秆、有机肥、生物炭、炭基改良剂I和炭基改良剂Ⅱ对紫色丘陵区坡耕地土壤水分库容、孔隙度和团聚体组成及稳定性的影响，分析了土壤水分特征参数与孔隙度和团聚体组成的关系，以期为紫色土区水土保持和土壤改良提供科学依据。与不施改良剂（对照）相比，5种炭基改良剂都能提高土壤对降水的截存和保贮能力，显著提高了土壤饱和含水量、田间持水量、水分总库容、有效水库容及重力水库容，降低了土壤凋萎点含水量和无效水库容；不同改良剂提升作用大小为改良剂Ⅱ＞改良剂I＞生物炭>有机肥＞秸秆 ...
柴冠群, 赵亚南, 黄兴成, 张跃强, 石孝均   +4 more
doaj  

[Determination of organophosphate diesters in facility vegetable soils using ultra-high performance liquid chromatography-electrostatic field orbitrap high resolution mass spectrometry]. [PDF]

Se Pu, 2023
Liu M, Wang M, Zhao A, Zhu L, Wang C, Wei C, Liu W, Xu J.   +7 more
europepmc   +1 more source

[Research progress on bioartificial liver]. [PDF]

Zhonghua Gan Zang Bing Za Zhi
Jiang Q, Su YS, Cao XY, Zhang HN, Li LJ.
europepmc   +1 more source

[Latest Findings on Polyketides/Non-ribosomal Peptides That Are Secondary Metabolites of Streptococcus mutans]. [PDF]

Sichuan Da Xue Xue Bao Yi Xue Ban, 2023
Zhang MD, Cheng XQ, Xu X.
europepmc   +1 more source