Analysis of the EM Wave Propagation Characteristic in the Time Varying Plasma Sheath

By solving NS equations with AUSM format, the flow field of blunt cone model is simulated, the electron density distributions in plasma sheath at different flight speeds are obtained. Time domain and frequency domain characteristics of electromagnetic wave are calculated through this time varying plasma sheath using FDTD method based on time

Analysis of Electromagnetic Wave Propagation in Plasma Sheath when Reentry into Atmosphere

One-dimensional inhomogeneous plasma sheath properties are analyzed by using the FDTD algorithm. calculate the  calculation of ttransmission coefficient of the inhomogeneous plasma sheath and also discuss the behavior of  EM wave in the sheath. At last, Analyses the characteristics  when the EM wave through the plasma sheath and give the time domain and frequency domain graph. The simulating results can provide a way to solve the blackout problem

An analysis method for residential electricity consumption behavior based on UMAP-CRITIC feature optimization and SSA-assisted clustering

The analysis of residential electricity consumption behavior (RECB) aims to deeply reveal the electricity consumption characteristics of customers that can be used to improve the electricity service performances from the large volume of load data. For analyzing the RECB, various clustering-based methods have been developed. However, with the dimension of power consumption data increasing, it is difficult for traditional methods to accurately identify users’ power consumption patterns. To this end, this paper proposes a novel analysis method for RECB with high-dimensional data based on uniform manifold approximation and projection-criteria importance through intercriteria correlation (UMAP-CRITIC) feature optimization and sparrow search algorithm (SSA)-assisted clustering. Specifically, the high-dimensional raw data combined with load characteristics indexes are first utilized to generate low-dimensional features by UMAP-based dimension reduction theory. Secondly, the contribution weight of each reduced feature to the intrinsic information of the original data is optimized based on the CRITIC weight method, and then the data feature set of RECB identification considering feature contributions is constructed. Finally, the SSA-based k-means is employed to obtain and analyze the various RECBs. The simulation results show that the proposed method can effectively identify high-dimensional electricity consumption data and precisely extract the electricity consumption information of residents

Single-Cell RNAseq Resolve the Potential Effects of LanCL1 Gene in the Mouse Testis

Infertility affects lots of couples, half of which are caused by male factors. The LanCL1 gene is highly expressed in testis specifically, which might affect the development of sperms. In order to understand the potential functions of the LanCL1 gene in the testis, this study was conducted with constructed transgenic LanCL1 knockout mice. The mouse breeding experiment, semen analysis and single-cell RNAseq of testicular tissue were performed. Results suggested that the LanCL1 gene would significantly influence the reproduction ability and sperm motility of male mice. Single-cell RNAseq also confirmed the high expression of the LanCL1 gene in the spermatocytes and spermatids. Downregulating the LanCL1 gene expression could promote M2 macrophage polarity to maintain testicular homeostasis. Moreover, the LanCL1 gene could affect both the germ cells and stromal cells through various pathways such as the P53 signaling and the PPAR signaling pathway to disturb the normal process of spermatogenesis. However, no effects of the LanCL1 gene in testosterone synthesis and serum testosterone level were shown. Further studies are needed to discuss the mechanisms of the LanCL1 gene in the various cells of the testis independently

Five-year antibody persistence in children after one dose of inactivated or live attenuated hepatitis A vaccine

In China, both inactivated hepatitis A (HA) vaccine and live attenuated HA vaccine are available. We conducted a trial to evaluate 5-year immune persistence induced by one dose of inactivated or live attenuated HA vaccines in children. Subjects with no HA vaccination history had randomly received one dose of inactivated or live attenuated HA vaccine at 18–60 months of age. Anti-HAV antibody concentrations were measured before vaccination and at the first, second, and fifth year after vaccination. Suspected cases of hepatitis A were monitored during the study period. A total of 332 subjects were enrolled and 182 provided evaluable serum samples at all planned time points. seropositive rate at 5 y was 85.9% in the inactivated HA vaccine group and 90.7% in the live attenuated HA vaccine group. GMCs were 76.3% mIU/ml (95% CI: 61.7 – 94.4) and 66.8mIU/ml (95% CI: 57.8 – 77.3), respectively. No significant difference in antibody persistence between 2 groups was found. No clinical hepatitis A case was reported. A single dose of an inactivated or live attenuated HA vaccine at 18–60 months of age resulted in high HAV seropositive rate and anti-HAV antibody concentrations that lasted for at least 5 y