The electro-hydrostatic actuator (EHA) is the key component of most electric aircraft, and research on its fault diagnosis technology is of great significance to improve the safety and reliability of aircraft flight.However, traditional fault diagnosis methods only focus on partial failures and cannot completely diagnose the whole EHA system.In thi
Adolescent, female, 12 years old, with a history of headache and vomiting, without fever, with progressive worsening and coma.Laboratory pr30 tests showed positive SARS-CoV-2 PCR RNA.She has not had the vaccine for COVID-19.A non-contrast-enhanced cranial tomography(Figure 1a) showed a right fronto-temporo-parietal cortical hypodense area with sign
Based on the theory of ecological crop nutrient deficiency and compensation effect, the nitrogen (N) deficiency at tillering stage and N compensation at young panicle differentiation stage in rice f1400ea-sb34 (Oryza sativa L.) was selected to study.Four N treatments were treated, and the effects of N deficiency and compensation were investigated o