Distribution characteristics and influencing factors of overweight and obesity among urban and rural primary and secondary school students in Hunan Province. [PDF]
Zhong Nan Da Xue Xue Bao Yi Xue BanQin L +6 more
europepmc +1 more source
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
doaj
[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.
europepmc +1 more source
[Comparative analysis of microbial communities in different oral ecological niches of preschool children]. [PDF]
Hua Xi Kou Qiang Yi Xue Za ZhiLiu J, Sun Y, Wu J, Tang S, Ding G.
europepmc +1 more source
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
doaj
[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.
europepmc +1 more source
[Diagnostic Performance of Metagenomic Next-Generation Sequencing for Mucormycosis: A Retrospective Cohort Study]. [PDF]
Sichuan Da Xue Xue Bao Yi Xue BanZhang W, Zhong S, Lu S, Xiao X, Xie Y.
europepmc +1 more source
[Development of a machine learning-based ionization efficiency prediction model for per- and polyfluoroalkyl substances and its application in semi-quantitative analysis]. [PDF]
Se PuSun SZ +6 more
europepmc +1 more source