Results 81 to 90 of about 8,270 (127)

典型喀斯特小流域不同降雨等级水化学最优采样频率初探

Shuitu Baochi Xuebao
[目的] 当前研究主要关注非喀斯特地区长时间尺度频率研究,对喀斯特不同降雨等级下的水化学采样频率研究不足,喀斯特小流域不同降雨等级水化学的最优采样频率尚不明确。[方法] 利用黔中高原典型喀斯特小流域在2022年6月至2023年7月不同降雨等级(大暴雨、大雨、中雨)间隔1 h的高频电导率(EC)数据,重采样为2~15 h的低频数据后,结合多种评价指标和突变点理论,确定喀斯特小流域不同降雨等级下水化学的最优采样频率。[结果] (1)喀斯特小流域受地质背景影响,水化学响应降雨呈现暴涨暴落特征 ...
方长敏, 彭韬, 张志才, 徐少强, 莫小妹, 翟奖, 蒋卫威   +6 more
doaj  

[Dual role of tea consumption in gastrointestinal disease risks: analysis using a risk prediction model integrating interpretable machine learning and large language model]. [PDF]

Nan Fang Yi Ke Da Xue Xue Bao
Chen J, Chen Z, Lin Z, Fang M, Shen C, Xu Q, Zhang X, Lu L.   +7 more
europepmc   +1 more source

[Patient-specific electroencephalography epileptic seizure prediction method using global dynamic multi-scale spatio-temporal features]. [PDF]

Sheng Wu Yi Xue Gong Cheng Xue Za Zhi
Cheng C, Wu H, Song W, You B, Liu Y.
europepmc   +1 more source

[Research progress on the acquisition technology of magnetocardiography]. [PDF]

Sheng Wu Yi Xue Gong Cheng Xue Za Zhi
Kang B, Dong M, Chang Y, Wang J, Zhao T, Fan L.   +5 more
europepmc   +1 more source

考虑动态频率响应的孤岛微电网日前—日内两阶段高分辨率优化调度

Gaoya dianqi
高比例新能源渗透的微电网具有惯量低、系统动态频率响应能力弱等特征，处在孤岛运行模式的微电网频率更易受波动。针对微电网频率稳定性问题，将动态频率响应模型加入到优化调度中，推导系统频率安全约束以提高系统调频能力。含动态频率响应约束的调度模型具有多约束、非线性、高维等特征，现有研究中忽略了调度模型线性化的影响。基于此，在考虑动态频率响应的孤岛微电网日前—日内两阶段优化调度模型中引入日内高分辨率离散策略，在日前优化调度的基础上选取能更好的拟合系统净负荷出力曲线的高分辨率进行日内优化调度，修正日前调度计划。最后 ...
张磊, 陈轩妮, 叶婧, 郭志豪
doaj  

[Research progress on the application of ultrasound technology in the diagnosis and treatment of lymphedema]. [PDF]

Zhonghua Shao Shang Yu Chuang Mian Xiu Fu Za Zhi
Tang ZY, Liu R, Deng CL.
europepmc   +1 more source

[Machine learning-based prediction model for caries in the first molars of 9-year-old children in Suzhou]. [PDF]

Hua Xi Kou Qiang Yi Xue Za Zhi
Chen L, Wang X, Zhu K, Ren K, Wu Z.
europepmc   +1 more source

[Lung nodule segmentation method based on multiscale feature interaction and coordinate information]. [PDF]

Sheng Wu Yi Xue Gong Cheng Xue Za Zhi
Xu Q, Zhu H, Wang Y, Liu W.
europepmc   +1 more source

[Safety and efficacy of pulsed radiofrequency therapy for zoster-associated trigeminal neuralgia under general anesthesia]. [PDF]

Zhong Nan Da Xue Xue Bao Yi Xue Ban
Zhang J, Feng S, Zou W, Liu Z, Wang E, Yan J, Bai N, Yang S, Luo J, Ren F.   +9 more
europepmc   +1 more source

[Progresses on temporal interference electromagnetic stimulation for non-invasive deep brain function modulation]. [PDF]

Sheng Wu Yi Xue Gong Cheng Xue Za Zhi
Zhou T, Yu P, Xu Y.
europepmc   +1 more source