In order to improve the diagnosis accuracy and solve weak fault signal of rolling element bearings due long transmission path, a novel method based on variational mode decomposition (VMD) maximum correlation kurtosis deconvolution (MCKD), namely VMD-MCKD-FD is proposed for elements in this paper. VMD-MCKD-FD, vibration decomposed into series Intrinsic Mode Functions (IMFs) by using VMD method. Then number modes with outstanding information determined Kurtosis criterion calculate period T....

Dynamic interaction between tumor cells and the microenvironment is critical for tumorigenesis, cancer immunosurveillance plays an important role in evolution. In some tumors (such as esophageal cancer, pancreatic colorectal cancer), studies have shown that number of tumor-infiltrating lymphocytes (TILs) has a significant relationship with prognosis, but there little research on prognosis TILs non-small cell lung (NSCLC) been performed. Therefore, it necessary to discover cytokines NSCLC...

This letter introduces a novel technique for low radar cross section (RCS) antenna designs. The differential evolution algorithm (DEA) and the method of moments (MoM) are combined to achieve RCS reduction satisfied radiation performance. geometric parameters extracted be optimized by DEA, fitness function is evaluated MoM represent performance each candidate design. optimization example slot patch presented as test proposed DEA/MoM algorithm. By optimizing location, given realizes in broad...

ICP22 is a multifunctional herpes simplex virus 1 (HSV-1) immediate early protein that functions as general repressor of subset cellular and viral promoters in transient expression systems. Although the exact mechanism repression remains unclear, this induces decrease RNA polymerase II Serine 2 (RNAPII Ser-2) phosphorylation, which critical for transcription elongation. To characterize transcriptional by ICP22, we established an vivo reporter system. We found inhibits HSV-1 α, β γ gene...

Based on the improvements of both Genetic Algorithm and Particle Swarm Optimization, a novel IGA-edsPSO(Improved Algorithm-extremum disturbed simple Optimization) Hybrid algorithm is proposed in this paper.An improved performance GA achieved by reducing array space.By discarding particle velocity vector PSO evolutionary equation, sPSO (simple PSO) can avoid problem slow later convergence low precision caused determining maximal factitiously.And edsPSO overstep local extremum point more...

In order to further reduce the aerodynamic drag of High-speed Electric Multiple Units (EMU), an active flow control reduction method combining air suction and blowing is proposed at rear EMU train. A numerical calculation based on realizable k-ε used investigate characteristics a three-car with speed 400 km/h. The influence different suction-blowing mass rates, position number ports surface pressure tail are analyzed. results demonstrate that EMU. And growth rate, rate car gradually...

A new method to optimize the radar cross section (RCS) for array antennas is presented. previous work has reported that RCS of an product factor multiplying element factor. In this method, strong scattering from equally spaced can be considerably reduced at some certain directions by optimizing With proposed optimized will scatter waves a much lower level against prescribed incident directions. order illustrate validation planar dipole and linear with bowtie antenna elements are designed...

Aiming at the problems of poor decomposition quality and extraction effect a weak signal with strong noise by empirical mode (EMD), novel fault diagnosis method based on cascaded adaptive second-order tristable stochastic resonance (CASTSR) EMD is proposed in this paper. In method, low-frequency interference components are filtered using high-pass filtering, restriction conditions theory solved an ordinary variable-scale method. Then, chaotic ant colony optimization algorithm global ability...

A coaxially fed microstrip antenna using a defected ground structure (DGS) for harmonic suppression is proposed, in which the DGS distributed around location. The effectiveness of discussed frequencies antenna. Experimental results show that application near to location can remarkably suppress frequencies. Measured radiation patterns indicate that, compared with reference antenna, forward proposed suppressed by 20 dB at second- and third-harmonic frequency, backward almost not varied.

A new approach for simultaneously synthesizing the radiation and scattering patterns of linear dipole antenna array is investigated. In this method, analytical formulas field scattered are derived in terms self-impedance, mutual-impedance terminal load impedance. So mutual coupling effects between elements can be taken into account. Based on these two formulas, desired synthesized by optimizing element placement. As an example, proposed method used designing a with low sidelobe level....

Streptococcus pneumoniae (Spn) is a common respiratory pathogen and the main cause of bacterial pneumonia, meningitis, bacteremia, acute otitis media. Imported 13-valent pneumococcal conjugate vaccine (PCV13) was licensed in China introduced Shanghai 2017. We aim to describe PCV13 vaccination trends pneumonia incidence children under 5 from 2017 2020, then estimate effectiveness against community-acquired (CAP) Shanghai, China.By calculating propensity scores with logistic regression,...

Micro electro mechanical system (MEMS) inertial sensors have advantages, including small size and low power consumption. The performances of Inertial measurement unit (IMU), which is composed MEMS sensors, degrade, error, will become larger in high dynamic environment. In order to solve the problem, a novel combined calibration method for compensating deterministic error proposed. Considering rotation different sensitive axes environment, compounded based on fuzzy neural network (FNN)...

Circular symmetrical ground planes such as square and circular ones are always utilized in the design of circularly polarized antennas. However, carriers practical applications mostly asymmetrical, which will impose an effect on polarization performance antenna. The characteristics a microstrip patch antenna with asymmetrical plane analyzed through simulation this paper. reason for deterioration is discussed, basis improved method proposed to dual-feed rectangular carrier. fabricated...

Focusing on the issue of attitude tracking for low-cost and small-size Micro-Electro-Mechanical System (MEMS) Inertial Measurement Unit (IMU) in high dynamic environment, an Adaptive Unscented Kalman Filter (AUKF) method combining sensor fusion methodology with Artificial Neural Network (ANN) is proposed. The different control strategies are adopted by fusing multi-MEMS inertial sensors under various situations. AUKF determination approach utilizing MEMS Global Positioning (GPS) can provide...

This article presents two approaches to reduce the computational cost of genetic algorithm (GA) in generating low sidelobe linear arrays by optimizing element positions subject multiple design constraints number elements, array aperture dimension, and minimum interelement spacing. Many experimental results indicate that only considering a few edge elements on both ends will have same effect pattern synthesis with case taking all into account. Firstly, based this concept, equation for...

Hepatitis A virus (HAV) and hepatitis E (HEV) are causative agents of acute viral transmitted via the fecal-oral route. Both viruses place a heavy burden on public health economy developing countries. To test possibility that HAV could be used as an expression vector for development combination vaccine against infections, recombinant HAV-HEp148 was created to express HEV neutralization epitope (HEp148) located at aa 459-606 capsid protein. The expressed HEp148 protein in partially dimerized...