Results 41 to 50 of about 2,011 (94)

黄土高原丘陵沟壑区刺槐人工林混交模式对土壤水力性质的影响

Shuitu Baochi Xuebao
目的研究旨在揭示黄土丘陵沟壑区刺槐混交林对土壤水力性质的影响，为该区人工林土壤水分的高效利用提供科学依据。方法选取黄土丘陵沟壑区刺槐×油松、刺槐×山杏、刺槐×山桃、刺槐×沙棘、刺槐×紫穗槐为研究对象，以刺槐纯林为对照，系统研究刺槐混交林土壤质量含水量（0~500 cm）、表层土壤水分特征曲线、田间持水量、最大有效含水量和土壤饱和导水率的影响。结果1）刺槐混交林（除刺槐×山杏）显著提高0~100 cm土层土壤质量含水量，较刺槐纯林提高1.75%~30.61%；2）相同基质势下，刺槐×山桃、刺槐×油松、刺槐×
莫佳佳, 杨艳芬, 刘国彬, 王兵, 马金龙   +4 more
doaj  

[U-shaped association between hematocrit and resting pulse oxygen saturation in Tibetan plateau population]. [PDF]

Zhejiang Da Xue Xue Bao Yi Xue Ban
Guo Y, Li R, Laba C, Yan Q.
europepmc   +1 more source

[Sex-specific hemoglobin thresholds for oxygen saturation: A non-linear regression analysis based on Tibetan inpatients]. [PDF]

Beijing Da Xue Xue Bao Yi Xue Ban
Gongjue Z, Mao Y, Dawa P, Laba C, Yan Q.
europepmc   +1 more source

珊瑚砂剖面结构与水文条件对坡面水文与砂输移的影响

Shuitu Baochi Xuebao
目的与天然形成的热带珊瑚岛相比，新成珊瑚岛因其建成过程中水力冲填和沉积导致剖面分布有致密层。为探明珊瑚砂剖面结构水力性质和水文条件对坡面水分入渗、壤中径流等水文过程与珊瑚砂颗粒输移的影响。方法以新成珊瑚岛剖面致密层为研究对象，通过珊瑚岛原位剖面调查和取样，分析珊瑚砂剖面的质地类型及其水文物理性质。结合室内珊瑚砂模拟降雨试验，分析均质和致密层分布的坡面在不同水文条件下的水文与珊瑚砂流失过程特征。结果粗质珊瑚砂具有较强导水能力，而致密层导水能力较差，饱和导水率仅为其他质地类型珊瑚砂的8 ...
王林华, 俞梦笑, 王森浩, 李志鹏, 李旭, 刘菊秀, 闫俊华   +6 more
doaj  

[Clinical value of AI-assisted cardiac auscultation in screening for congenital heart disease in neonates]. [PDF]

Zhejiang Da Xue Xue Bao Yi Xue Ban
Zhang J, Jia W, Zhang Q, Fu C, Xie C, Xu W.   +5 more
europepmc   +1 more source

桂东南花岗岩红壤区典型崩岗剖面风化强度对理化特性的影响

Shuitu Baochi Xuebao
[目的] 花岗岩红壤剖面风化强度与崩岗形成密切相关,促进崩岗侵蚀的发育和扩张,研究风化强度和理化特性对崩岗的作用机理,可为花岗岩崩岗科学防治提供理论依据。[方法] 选取花岗岩红壤区典型崩岗剖面为研究对象,测定不同土层的常量氧化物含量和土壤理化性质,分析花岗岩红壤风化强度对理化特性的影响。[结果] (1)土壤剖面常量氧化物组成以SiO2、Al2O3和Fe2O3为主,花岗岩风化壳表现出脱硅富铁铝化过程,风化强度随土壤剖面深度增加而降低,处于高等风化阶段。(2)土壤剖面的理化性质具有异质性。表层有机质 ...
谢福倩, 韦真茜, 廖达兰, 段晓倩, 邓羽松   +4 more
doaj  

[Tripeptide polymer-based cell-imprinted hydrogels for high-efficiency circulating tumor cell capture]. [PDF]

Se Pu
Sun W, Zhang Z, Zhao X, Chen J, Qing G.
europepmc   +1 more source

[The Relationship Between Serum Very Long-chain Saturated Fatty Acids and Chronic Kidney Disease]. [PDF]

Sichuan Da Xue Xue Bao Yi Xue Ban
Liu K, Wang Y, Wang L.
europepmc   +1 more source

[Rapid determination of venetoclax in plasma by ultra performance liquid chromatography-tandem mass spectrometry]. [PDF]

Se Pu
Zhu Y, Ma XL, Yu SL, Qiu L.
europepmc   +1 more source

[Establishment and application of a knowledge-directed pseudo-targeted analytical method for diabetic retinopathy]. [PDF]

Se Pu
Hou YQ, Chi XY, DU TH, Yan ZQ, Hou DD, Hu CX, Liu YX, Liu XY, Xu GW.   +8 more
europepmc   +1 more source