Results 11 to 20 of about 432 (152)

Impact Features Extracting Method for a Reciprocating Compressor Based on the ABC-SGMD Model

Applied Sciences (Switzerland)
In the typical vibration signal of a reciprocating air compressor, multi-source nonlinear characteristics are exhibited and are often drowned out in background noise, which leads to a lack of robustness in traditional feature analysis methods and ...
Fengfeng Bie
exaly   +5 more sources

RESEARCH ON ROLLING BEARING FAULT FEATURE EXTRACTION METHOD WITH SGMD-MOMEDA (MT)

Jixie qiangdu, 2022
Aiming at the problem that the vibration signal of rolling bearing is difficult to extract due to the characteristics of non-linear, non-stationary and low signal-to-noise ratio, a new fault extraction method based on symplectic geometry mode ...
CAO YaLei, DU YingJun, WEI Guang, DONG XinMin, GAO LiPeng, LIU YuXi   +5 more
doaj   +3 more sources

Economic Optimization of Hybrid Energy Storage Capacity for Wind Power Based on Coordinated SGMD and PSO

Energies
Under the dual carbon objectives, wind power penetration has accelerated markedly. However, the inherent volatility and insufficient peak regulation capability in energy storage allocation hamper efficient grid integration.
Kai Qi, Keqilao Meng, Xiangdong Meng, Fengwei Zhao, Yuefei Lü   +4 more
doaj   +3 more sources

Marine Controlled-Source Electromagnetic Data Denoising Method Using Symplectic Geometry Mode Decomposition

Journal of Marine Science and Engineering, 2023
The marine controlled-source electromagnetic (CSEM) method is an efficient tool for hydrocarbon exploration. The amplitudes of signals decay rapidly with the increasing offset, so signals are easily contaminated by various kinds of noise.
Yijie Chen, Zhenwei Guo, Dawei Gao
doaj   +2 more sources

Integrating network pharmacology and experimental verification to study the mechanism of Polygonum hydropiper total flavonoids against stress-induced gastric mucosal damage [PDF]

Heliyon
Context: Polygonum hydropiper L. (P. hydropiper) has outstanding clinical efficacy in treating both acute and chronic gastroenteritis. However, the definite mechanism remains unclear. Objective: This study aimed to explore the potential mechanisms of the
Bangpei Chen, Xueqing Huang, Feifei Zhu, Yunyun Zhi, Mengyu Mei, Yonghui Li, Yiqiang Xie, Ye Zhu, Shouzhong Ren   +8 more
doaj   +2 more sources

Comparison of Sweepgas and Vacuum Membrane Distillation as In-Situ Separation of Ethanol from Aqueous Solutions

Chemical Engineering Transactions, 2014
The rising oil prices, as well as the desire to reduce the environmental impact of fossil fuels, increases the interest in fuels from renewable raw materials. Bioethanol production via starch fermentation is state of the art.
A. Rom, M. Strommer, A. Friedl
doaj   +2 more sources

Numerical evaluation of sweeping gas membrane distillation for desalination of water towards water sustainability and environmental protection [PDF]

Scientific Reports
Sweeping gas membrane distillation (SGMD) is considered a membrane distillation configuration. It uses an air stream to collect the water vapour.
Yan Cao, Ali Taghvaie Nakhjiri, Mahdi Ghadiri   +2 more
doaj   +2 more sources

Roller Bearing Fault Diagnosis Based on Partial Reconstruction Symplectic Geometry Mode Decomposition and LightGBM

IEEE Access, 2023
It is always a hot and challenging problem to extract the characteristic information of roller bearings from strong noise interference. Conventional Hilbert-Huang Transform (HHT), Local Mean Decomposition (LMD), Local Feature-Scale Decomposition (LCD ...
Yanfei Liu, Junsheng Cheng, Yu Yang, Guangfu Bin, Yiping Shen, Yanfeng Peng   +5 more
doaj   +2 more sources

Analysis and Experimental Study on Water Vapor Partial Pressure in the Membrane Distillation Process [PDF]

Membranes, 2022
In membrane distillation, the vapor pressure difference is the driving force of mass transfer. The vapor pressure is generally assumed by the saturation pressure and calculated by the Antoine equation.
Zanshe Wang, Zhaoying Jia, Ran Li, Qi Gao, Zhaolin Gu   +4 more
doaj   +2 more sources

Dengue fever prediction based on meteorological features and deep learning models [PDF]

Infectious Disease Modelling
The dengue fever epidemic is one of the health priorities of the World Health Organization (WHO), and accurately predicting its epidemiological trends is crucial.
Yunyun Cheng, Rong Cheng, Ting Xu, Xiuhui Tan, Yanping Bai   +4 more
doaj   +2 more sources