Results 111 to 120 of about 5,405 (176)

Soil Particls Loss by Water Erosion

, 2000
研究结果表明 ,土壤有机质和全氮与 <1 0μm土壤颗粒相关系数分别为 0 .63 1 4和 0 .6750 ,与 <1 μm粘粒的相关系数分别达到 0 .72 54和 0 .73 2 9;有机质和全氮在泥沙中的富集现象主要由侵蚀泥沙 <1 μm粘粒富集造成 ;坡度与侵蚀泥沙粘粒、有机质和全氮的富集率的相关系数分别为 -0 .983 2、-0 .93 95和-0 .81 ...
刘国彬, 刘文兆, 张兴昌
core  

Absorbed N,P Amount of Millet and Soil Nutrient Loss as Affected by Different N,P Treatments in Slopeland

, 1998
氮磷配施对坡地谷子吸Ｎ，Ｐ量及土壤养分流失影响的研究表明：（１）Ｎ，Ｐ肥的不同配比均能增加谷子对Ｎ，Ｐ的吸收，增施Ｐ对Ｎ吸收的效果较高于增施Ｎ对Ｐ的吸收；（２）施Ｎ，Ｐ量的增加与泥沙中Ｎ，Ｐ富集率无相关关系；（３）作物生物量与土壤侵蚀量的相关系数为－０．９７２４；（４）增施Ｎ，Ｐ肥对土壤侵蚀和全量养分减少的程度远高于对径流量和速效Ｎ ...
吴瑞俊, 翟连宁, 郑剑英
core  

[Single-cell RNA sequencing of B cells reveals molecular typing in Sjögren syndrome]. [PDF]

Beijing Da Xue Xue Bao Yi Xue Ban
Lin W, Xie Y, Wang F, Wang S, Liu X, Hu F, Jia Y.   +6 more
europepmc   +1 more source

不同上方来水模式下工程堆积体坡面的植被调控

, 2019
为揭示植被格局对工程堆积体坡面水沙调控的影响，采用野外模拟径流冲刷试验，分析了 4 种上方来水模式（均 匀型、峰值前型、峰值中型和峰值后型）下坡面 5 种覆草格局（裸坡、坡顶聚集、坡中聚集、坡底聚集和带状格局）的 侵蚀特征。结果表明：水流功率与土壤剥蚀率之间相关性最高且呈极显著幂函数关系（R2 =0.47～0.72，P<0.01），是描述 堆积体侵蚀动力机制的最优参数。植被格局的减流效益在 12.23%～49.62%之间，减沙效益在 12.92%～80.54%之间，减 ...
冯志倩, 娄永才, 张恒, 李永红, 苏媛, 陈卓, 高照良, 齐星圆   +7 more
core  

[Proteomics analysis of the effect and mechanism of ADSCs on full-thickness skin defects in diabetic rats]. [PDF]

Zhonghua Shao Shang Yu Chuang Mian Xiu Fu Za Zhi
Gu Y, Chen YZ, Wang SY, Song HY, Bai N.
europepmc   +1 more source

[Research progress on ionic liquid-functionalized magnetic Fe₃O₄ nanomaterials in sample pretreatment- chromatographic analysis]. [PDF]

Se Pu
Li JX, Zhao LZ, Sun XM, He ZQ, Cao HL, Luo YJ, Yang B.   +6 more
europepmc   +1 more source

[Research progress on the pretreatment and analysis of prohibited components of glucocorticoids in cosmetics]. [PDF]

Se Pu
Liu L, Xiao XH, Fang JH, Li GK.
europepmc   +1 more source

[Determination of 51 per- and polyfluoroalkyl substances in raw water and drinking water by online solid-phase extraction coupled with ultra performance liquid chromatography- tandem mass spectrometry]. [PDF]

Se Pu
Chen YY, Lyu J, Ye BX, Zhang L, Wang YY, Jin N.   +5 more
europepmc   +1 more source

基于粒子群优化算法的东构造结滑坡清单建立与侵蚀速率估算

Shuitu Baochi Xuebao
目的构建喜马拉雅东构造结地区大范围的多时相滑坡清单，量化滑坡侵蚀速率，揭示滑坡过程在该区域的地貌学意义。方法基于粒子群优化算法（particle swarm optimization， PSO）进行遥感影像归一化植被指数（normalized difference vegetation index， NDVI）的变化检测，构建1987-2021年东构造结地区的多时相滑坡清单；根据滑坡面积-体积经验公式计算该区域的滑坡侵蚀速率；结合气候和地形等参数，探讨滑坡过程的诱发因素。结果研究区1987 ...
耿豪鹏, 徐子怡, 郭宇, 张建
doaj  

[Metabolomic alterations in preterm infants with bronchopulmonary dysplasia]. [PDF]

Zhongguo Dang Dai Er Ke Za Zhi
Wu YY, Bu QQ, Wang X, Li T, Wu HY, Kang L, Wang YY, Liu DP, Guo J, Wang CJ, Kang WQ.   +10 more
europepmc   +1 more source