Alkaloids are the most basic organic compounds involved in crucial physiological activities and widely found plants, animals microorganisms. Due to anti-inflammatory, anti-tumor, bacteriostatic, analgesic effects of alkaloids, previous research primarily focused on their medical utilization. In recent years, regarding alkaloids botanical pesticides has gradually intensified due low toxicity, easy degradation, environmental friendliness, compared with traditional chemical pesticides, while...

Conventional analytical and numerical approaches are inefficient for the analysis of electromagnetic (EM) coupling effect on a printed circuit board (PCB) in complicated electric systems. This paper develops hybrid method based combination topology or full-wave simulation. A mechanism PCB nested shielding enclosure is established, EM interactions from exterior fields to interior determined by way conductive radiation interference. The total load disturbance voltage trace obtained solving BLT...

Toluene is one of the typical volatile organic compounds in industry, particularly energy and fuels production processes, which required to be eliminated effectively protect environment. Catalytic oxidation toluene widely studied for its high efficiency, rational design synthesis metal catalysts are keys oxidation. In this study, an efficient catalyst was designed synthesized by introducing −NH2 groups on ordered mesoporous silica (KIT-6) surface anchor disperse Pd species, leading...

An analytical formulation for calculating shielding effectiveness (SE) was developed by Robinson. This method, compared with numerical methods, can obtain SE faster and needs less computer memory. However, its accuracy depends on the distance p, which is from observation point to aperture. In this paper, a reference p̅, determines whether Robinson's method precise has been introduced. We define that high if p <; p̅ but low p̅. The relationship between value of all related parameters...

A calculation method based on BLT equation is proposed for analyzing the shielding effectiveness of enclosures containing apertures. This can accurately and quickly obtain oblique incidence polarization, off-centered apertures, multi-apertures in two walls enclosures. Aperture scattering matrix be obtained according to equivalent circuit theory. Then, propagation relationships reflection are established, finally general derived, including coupling In order verify validity, results compared...

In this paper, we present an efficient and accurate approach to predict the shielding effectiveness (SE) of enclosure with numerous small apertures, which involves two methods: equivalent model aperture array waveguide circuit model. First, is derived from numerical simulation that simplifies into a single aperture, then aperture's impedance calculated applied calculate SE enclosure. The result shows better agreement measurement than original comparison admittance model, our method can be...

The shielding properties of a rectangular enclosure with doubly periodic array apertures, exited by an obliquely incident and arbitrarily polarized plane wave is dealt improved method moments (MOM) approach mode-matching technique efficiently accurately. Floquet waves for structure are employed to represent the fields half-space, within cavity considered as superposition waveguide modes. After enforcing boundary conditions, MOM used obtain effectiveness transmission coefficient. proposed has...

Previous studies have shown that fibroblast growth factor 13 is downregulated in the brain of both Alzheimer's disease mouse models and patients, it plays a vital role learning memory. However, underlying mechanisms remain unclear. In this study, we established rat by stereotaxic injection amyloid-β (Aβ1-42)-induced into bilateral hippocampus. We also injected lentivirus containing hippocampus to overexpress 13. The expression was model rats. After overexpression 13, memory abilities rats...

In order to reduce the number of numerical meshes and simplify aperture array modeling, an equivalent method modeling in which size effect apertures is taken into account, presented paper. this method, replaced by a single has same area as original array, then scaling factor obtained according apertures. The empirical relations between are proposed based on theoretical derivation curve fitting respectively. comparison with commercial software HFSS indicates that formula higher accuracy....

Recently, the outbreak of infection Duck adenovirus 3 (DAdV-3) characterized by swelling and hemorrhagic liver kidney has caused huge economic losses to duck industry since 2014 in China. To date, B cell epitopes Fiber-1 protein underlying mechanism DAdV-3 have not been investigated. In this study, recombinant was first expressed E. coli six novel monoclonal antibodies (mAbs) against were generated, designated as 1D8, 1E6, 3G6, 4G1, 4G2, 6F10, respectively. Moreover, mAbs 3G6 6F10 could...

In view of the need electromagnetic compatibility analysis in design process electronic equipment, an equivalent method modeling characteristics radiation from printed circuit board interference source is proposed by using magnetic dipole array. According to boundary value problems, radiating and structures affecting are modeled separately. At first, actual detail. Then effect surrounding on overall incorporated into model. Moreover, basic ideas introduced, derivation formulas obtain array...

For the purpose of ventilation, cooling, and human-computer interaction, apertures must be added on enclosure. However, these break integrity enclosure are considered to main reason for electromagnetic energy leakage, which directly influence shielding effectiveness (SE) The transmissionline matrix (TLM) method has been employed in this paper investigate performance with apertures. effects some related parameters aperture such as its shape, quantity, position, depth, ratio, direction etc...

Abstract The field of art education can benefit from the application VR technology due to its characteristics immersion, interaction, and empathy. This paper utilizes in education, utilizing immersive learning as a theoretical guide. It also combines analysis user group needs students teachers, presents design scheme for an virtual system appreciation courses. consists three modules: hardware environment, software human-computer interaction. Scene Operate Scale panels perform real-time...

To improve the precision and speed of system, a new 16-electrode electrical capacitance tomography (ECT) system based on DSP was designed. The measure adopts 16 electrodes combined floating sensor array, with phase located loop circuit to eliminate ECT systems additional error. digital signal processor (DSP) is core data acquisition computing control unit includes (TMS320C5416) complex programmable logic device (CPLD). communication module designed developed HPI parallel transmission...

Our study aimed to assess the effect of miR-181a-3p from exosome excreted by BMSCs on lung cancer cell apoptosis. Lung cells A549 and normal pulmonary epithelial were cultivated in vitro measure ERAD PR mRNA level qRT-PCR or Western blot assay along with analysis proliferative activity CCK-8, apoptosis flow cytometry ERAD, p-AKT. was significantly elevated compared BEAS-2B reduced. proliferation restrained after treated promoted a dose-dependent manner. down-regulated up-regulated varied...