Shuitu Baochi Xuebao[目的] 分析石漠化坡地不同整地措施下表层土壤水分的空间分布特征,为提高石漠化坡地的水资源利用效率和农业管理水平提供参考依据。[方法] 以石漠化坡地中反坡、斜坡和平地3种整地措施下的柑橘林地为研究对象,采用经典统计学、地统计学和多重分形理论研究土壤水分的空间分布特征。[结果] (1)反坡的土壤含水量显著高于平地和斜坡(p＜0.05),平地土壤含水量的空间连续性和聚集性以及总变异和结构性变异强于斜坡和反坡。(2)不同整地措施下的土壤含水量均具有中等强度变异性(10.00%≤CV≤100.00 ...
田卓, 张帅普, 徐勤学
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[Distribution characteristics and correlation analysis of GJB2 variation in patients with auditory neuropathy]. [PDF]
Lin Chuang Er Bi Yan Hou Tou Jing Wai Ke Za ZhiLi Y, Wang H, Li D, Wang Q.
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[A time-frequency transform and Riemannian manifold-based domain adaptation method for motor imagery in brain source space]. [PDF]
Sheng Wu Yi Xue Gong Cheng Xue Za ZhiQi Q, Li M.
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Dianci bileiqi大量的分布式光伏接入改变了传统配电网结构和潮流，使配电网接地故障特征发生改变。通过分析光伏并网容量、位置、光伏出力波动性及并网高次谐波对接地故障的零序电压的影响，发现对比光伏接入前，零序电压的各类时频域特征受到了不同程度的影响，甚至出现了部分接地故障时频域特征混淆的问题，造成故障辨识难度加大。对此，本文提出基于零序电压的VMD-MPE-CNN接地故障辨识算法。首先，采用VMD-MPE算法对零序电压信号进行分解，并计算本征模分量的多尺度排列熵得到故障特征矩阵。然后 ...
龙国华 +5 more
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[Digital measurement and analysis of anatomical characteristics of protrusive and intercuspal position occlusal contacts in maxillary incisors]. [PDF]
Beijing Da Xue Xue Bao Yi Xue BanShao L, Ma W, Chen Y, Ding Q, Zhang L.
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[Research progress in diagnosis and treatment of non-tumorous salivary gland diseases]. [PDF]
Beijing Da Xue Xue Bao Yi Xue BanCong X, Su J, Wu L, Ding C, Li W, Yu G.
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[Efficacy and safety analysis of BTK inhibitors combined with R-CHOP regimen in newly diagnosed double-expressor diffuse large B-cell lymphoma]. [PDF]
Zhonghua Xue Ye Xue Za ZhiLu JB +9 more
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[Predictive value of a multimodal radiomics model for central lymph node metastasis in clinically node-negative papillary thyroid microcarcinoma based on machine learning]. [PDF]
Zhejiang Da Xue Xue Bao Yi Xue BanFeng J +5 more
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