Stirling engines are currently of interest due to their adaptability to a wide range of energy sources.Since simple tools are needed to guide the sizing of prototypes in preliminary studies, this paper proposes two groups of simple models to estimate the maximum power in Stirling engines with a kinematic drive mechanism.The models are based on regr
There are a huge number of harmonics in the railway power supply system.Accurately estimating the harmonic impedance of the system is the key to evaluating the harmonic emission level of the power supply system.A harmonic impedance estimation method is proposed in this paper, which takes the Gaussian mixture regression (GMR) as the main idea, and i
Y Accessories chromosomes across diverse species convergently evolve a gene-poor, heterochromatic organization enriched for duplicated genes, LTR retrotransposons, and satellite DNA.Sexual antagonism and a loss of recombination play major roles in the degeneration of young Y chromosomes.However, the processes shaping the evolution of mature, alread
BackgroundNeonatal hypoglycemia is common and can cause brain injury.Buccal dextrose gel is effective for treatment of neonatal hypoglycemia, and when used for prevention may reduce the incidence of hypoglycemia in babies at risk, but its clinical utility remains uncertain.Methods and findingsWe conducted a multicenter, double-blinded, placebo-cont
Semitransparent perovskite solar cells (PSCs) that possess a high-power conversion efficiency (PCE) and high average visible light transmittance (AVT) can be employed in applications such as photovoltaic windows.In this study, a bifacial modification comprising a buried layer of [4-(3,6-Dimethyl-9H-carbazol-9-yl) butyl] phosphonic acid (Me-4PACz) a