Results 101 to 110 of about 874 (155)

Study on nitrogen movement under localized compaction and ridge tillage by use of artificial rainfall

, 2003
利用人工模拟降雨研究了成垄压实施肥条件下不同的垄坡度及不同压实的障碍层对硝态氮迁移的影响。结果表明,对一次60mm的降雨,无障碍层存在时,平地施肥条件下NO-3 N淋溶剧烈,土壤表层施肥部位的NO-3 N仅余总施入量的0 1%左右。垄沟施肥因其将入渗水分与施肥区分开,从而可以降低NO-3 N的淋溶。不同的垄坡度对NO-3 N残留量略大于20°、40°。相对于不同坡度垄沟,3 N的淋溶略有影响,30°垄坡条件下上层土壤NO-在施肥带部位通过压实形成水分运动的障碍层对防止NO-3 ...
赵允格, 邵明安
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[Meta analysis of the prevalence and risk factors of non-alcoholic fatty liver disease in overweight and obese children and adolescents in China]. [PDF]

Zhongguo Dang Dai Er Ke Za Zhi
Xiao Y, Pan YF, Dai Y, Sun YJ, Zhou Y, Yu YF.   +5 more
europepmc   +1 more source

Effect of initial soil moisture content on nitrate transportation in loessial soil under artificially simulated rainfall conditions

, 2008
利用室内人工模拟降雨,研究了不同初始含水量砂黄土在降雨条件下入渗-径流、土壤侵蚀,以及NO3--N随径流流失和土壤深层淋溶特征。结果表明,初始含水量对产流时刻的影响在相对含水量为49.4%和76.9%之间存在一个转折点,高初始含水量较低含水量产流提前大约15 min;土壤侵蚀量随着土壤初始含水量的增加而增加,相对含水量为97.1%时,侵蚀泥沙量分别是相对含水量22.9%时的2.8倍,49.4%时的2.3倍,76.9%时的1.5倍。初始含水量高的处理径流初始NO3--N浓度高,随后各处理均衰减很快,10 ...
张长保, 李世清, 樊军, 王全九
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[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

[Serum levels of polycyclic aromatic hydrocarbons and health risk assessment among children and adolescents]. [PDF]

Se Pu
Wang LP, Deng ZY, Shi SY, Wang HW, Liu K, Li X, Zhang MY, Mei SR.   +7 more
europepmc   +1 more source

[Application of Remimazolam in Pediatric Adenoidectomy and Tonsillectomy Anesthesia and Its Effect on Emergence Agitation]. [PDF]

Sichuan Da Xue Xue Bao Yi Xue Ban
Cheng Y, Shen Q, Bo Y, Hu X.
europepmc   +1 more source

Risk factors for multiple myeloma and its precursor diseases. [PDF]

Zhong Nan Da Xue Xue Bao Yi Xue Ban
Ma W, Zhao L, Zhou W.
europepmc   +1 more source

Evaluation and analysis of efficacy in bisphosphonate treatment of chronic nonbacterial osteomyelitis. [PDF]

Hua Xi Kou Qiang Yi Xue Za Zhi
Li D, Yu Z, Nie C, Zou Z, Wang J.
europepmc   +1 more source

[ERI3 expression is elevated in hepatocellular carcinoma and correlates with poor patient prognosis]. [PDF]

Nan Fang Yi Ke Da Xue Xue Bao
Zhao X, Wang H, Song Y, Yuan S, Zhang Z, Zhou X, Li S, Li X, Li F.   +8 more
europepmc   +1 more source

[Shared Therapeutic Targets of Obesity and Type 2 Diabetes Mellitus and the Intervention Mechanisms of Chinese Herbal Components]. [PDF]

Sichuan Da Xue Xue Bao Yi Xue Ban
Li R, Wang R, Li L, Wang C, Liao T, Zhang B, Yue R.   +6 more
europepmc   +1 more source