| 2 | Remaining Useful Life Prediction for a Multi-stack Solid Oxide Fuel Cell System with Degradation Interactions显示文摘Due to the constraints of manufacturing and materials,high-power plants cannot rely on only one solid oxide fuel cell stack.A multi-stack system is a solution for a highpower system,which consists of multiple fuel cell stacks.A short lifetime is one of the main challenges for the fuel cell before largescale commercial applications,and prognostic is an important method to improve the reliability of fuel cells.Different from the traditional prognostic approaches applied to single-stack fuel cell systems,the key problem in multi-stack prediction is how to solve the correlation of multi-stack degradation,which can directly affect the accuracy of prediction.In response to this difficulty,a standard Brownian motion is added to the traditional Wiener process to model the degradation of each stack,and then the probability density function of the remaining useful life(RUL)of each stack is calculated.Furthermore,a Copula function is adopted to reflect the dependence between life distributions,so as to obtain the remaining useful life for the whole multi-stack system.1 The simulation results show that compared with the traditional prediction model,the proposed approach has a higher prediction accuracy for multi-stack fuel cell systems. | Xiaojuan Wu Liangfei Xu Yang Huang Danan Yang Junhao Wang Houjun Wang Xi Li | 2022 | CSEE Journal of Power and Energy Systems2022，8，4： | 0 |
| 3 | Discussion on the Characteristics and Symptom Classification of COVID-19 in Chinese Medicine显示文摘Covid-19(Novel coronavirus pneumonia,NCP)was characterized by fever,dry cough,fatigue,greasy tongue coating and pulsating pulse.According to the literature,with those four symptoms,examination and identification,it is believed that NCP belongs to the category of 'pandemic' in Chinese medicine.The main infection is dampness,infection location in triple energizer,the basic pathogenesis is characterized by 'dampness,phlegm,blood stasis heat,toxin and deficiency.'According to the law of blood transfer of symptom differentiation of triple energizer and weiqi-yingxue the treatment is divided into stages,such as early stage,middle stage,severe stage and recovery stage.Most of the patients were early stage and middle stage,which were the direct transmission of the disease.A small number of patients had the reverse transmission of pericardium and the internal and external detachment.The main method of treatment is to remove infection,remove dampness and detoxify.In addition,to grasp the treatment of early stage and middle stage patients,helps to stop the disease from developing,and it is the key to reduce the criticality of the disease,as well as reduce the mortality. | Na Yang Yun Li Wangbo Cao Danan Yang | 2021 | Journal of Clinical and Nursing Research2021，5，4： | 0 |
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