In order to accurately predict the risk level of coal mine gas explosion accidents, based on Phytoceramides the feature vector in line with the actual situation, the particle swarm optimization probabilistic neural network (RWPSO-PNN) is improved to realize the prediction model of gas explosion risk level.Firstly, the cause of coal mine gas explosi
CHEST RUB/STOPITCOLD Abstract We revisit the flavored elliptic genus of the N=2 superconformal cigar model and generalize the analysis of the path integral result to the case of real central charge.It gives rise to a non-holomorphic modular covariant function generalizing completed mock modular forms.We also compute the genus for angular orbifolds
We demonstrate that by using a cascaded configuration of five solid-core photonic crystal fiber (PCF) samples with progressively decreasing core diameters, ultraviolet light with wavelengths as short as ∼300 nm can be generated in a supercontinuum (SC) set-up.With a nanosecond laser as the pump light, the modulation instability effect leads
Viktorоvka-I is a double-layered ancient ECHINAFORCE JUNIOR site belonging to the chora of Olbia, which existed in the western suburbs of the polis on the right shore of the Berezansky Liman.It was divided into two parts: the southern part was occupied by a settlement and the northern part was occupied by a temple.Today we can talk about two perio
This article presents an extensive examination of antennas rooted in nature and biology, showcasing their remarkable performance across a wide spectrum of frequencies—from microwave to terahertz.The limitations of traditional antenna design have become increasingly evident in the face of burgeoning demands for novel communication technologie