Osteoarthritis (OA) is a prevalent degenerative joint disease and current therapies are insufficient to halt its progression. Mesenchymal stem cells-derived extracellular vesicles (MSCs-EVs) offer promising therapeutic potential for OA treatment, their efficacy can be enhanced through strategic engineering approaches. Inspired by the immune memory of adaptive system, we developed an engineered strategy impart OA-specific MSCs-EVs. Using Luminex technology, inflammatory factors (IFN-γ, IL-6,...

The development of outsourcing services for agricultural management such as pest control in China's grain production has been sluggish a long time, while the level harvesting, land preparation and sowing are relatively high. Taking rice maize Jiangsu, Jilin, Sichuan provinces China examples, to discover whether could realize whole steps outsourcing. Two necessary conditions supply technological progress, which leads increases specialized economies scale, market is sufficient meet realization...

Failure of the power device can have a very large impact on entire circuit. IGBT as main device, ensuring its reliability becomes more and important. In different environments, there will be differences in failure rate IGBTs. Therefore, studying mechanism is great significance to ensure IGBT. Firstly, dynamic model constructed improved correct consumption error. Then finite element used analyze electro-thermal-force material layers, at same time, distribution stress temperature between...

In the field of integrated sensing and communication, there is a growing need for advanced environmental perception. The terahertz (THz) frequency band, significant ultra-high-speed data connections, shows promise in sensing, particularly detecting surface textures crucial autonomous systems’ decision-making. However, traditional numerical methods parameter estimation these environments struggle with accuracy, speed, stability, especially high-speed scenarios like vehicle-to-everything...

While work in Techniques based on sharing data and computation among queries developed algorithms systems that are shown to be effective, there is a lack of logical foundation for query processing optimization. In this paper, we present PsiDB, system model large number database batch. The key idea generate single expression returns global relation containing all the needed individual queries. For that, propose use type relational operators called ψ-operators combining into expression. We...

We report a low-fabrication-complexity and wideband fiber lens, which is formed by facet etching filling high refractive index UV adhesive. The optical field can be significantly shrunk the lens so as to obtain improved coupling. Numerical simulations were carried out for different coupling conditions, on both fundamental mode high-order mode, nine-mode fiber. area reduced from 152.17 12.57 μm2, loss between photonic waveguide -2.9 dB with over 1000 nm 3 bandwidth.

<title>Abstract</title> Chip-scale nonreciprocal devices, including isolators and circulators, are indispensable in the application of optical communications, all-optical signal processing LiDAR, holding advantages small-size, mass-production portability. Approaches that involve integration magnetooptical materials spatiotemporal modulation have been demonstrated, yet with a high insertionloss or requiring additional bias. Here, we proposed novel all-optical, passive, bias-free silicon chip...

Unmanned Aerial Vehicle (UAV) assisted terahertz (THz) wireless communications have been expected to play a vital role in the next generation of networks. UAVs can serve as either repeaters or data collectors within communication link, thereby potentially augmenting efficacy systems. Despite their promise, channel analysis and modeling specific THz channels leveraging remain under explored. This work delves into ground-to-UAV at 140 GHz, with focus on influence UAV hovering behavior...

Unmanned aerial vehicle (UAV) assisted wireless communications have been expected to play a vital role in the next generation of networks. UAVs can serve as either repeaters or data collectors within communication link, thereby potentially augmenting efficacy systems. Despite their promise, channel analysis and modeling specific terahertz (THz) channels leveraging remain under-explored. This work delves into ground-to-UAV at 140 GHz, with focus on influence UAV hovering behavior performance....

Magnesium and its alloys have received extensive attention in the biomedical field due to their excellent mechanical properties, good biocompatibility, biodegradability. However, Mg typically suffer from rapid degradation rates physiological environments active chemical properties poor corrosion resistances of naturally formed oxide films, which greatly hinders widespread applications biomaterials. Besides, are usually accompanied by excessive release hydrogen alkaline substances vicinity...

In today’s era where the demand for computational resources by large models is increasingly high, optical computing offers an alternative physical platform computation. With its high parallelism and maturation of integrated photonic technologies, expected to further support required models. For one-dimensional convolution accelerators, existing methods can fully utilize working bandwidth electro-optic modulators frequency light sources. However, most computations currently require execution...

Abstract On-load tap-changer (OLTC) is an important part of large-scale load transformers, and its fault will directly affect the reactive power flow regulation system stability center voltage. In this paper, a state diagnosis method based on vibration signal proposed for tap changer. The signals are decomposed by wavelet packet transform calculated energy entropy to obtain information experimental data shows that characteristics obvious under different faults, which lays foundation in-depth...

Through Starting from the construction of environment, and analyzing University university spirit, this paper points out relationship between campus buildings, people.Through example, it illuminates that buildings should be harmonious to do natural architecture, environment.

Abstract Aiming at the low precision of IGBT thermal parameter junction temperature prediction method and need to extract multiple parameters being vulnerable load, improved artificial bee colony algorithm optimized support vector regression machine (ABC- SVR) is used predict temperature. Firstly, formula for updating honey source in (ABC) improved, fitness probability Follower select introduced construct weight function; Then problem (SVR) selection transformed into combination optimization...

Abstract Failure of insulated gate bipolar transistors (IGBTs) can make a serious impact on the entire rectification or inverter system. IGBTs are used in different practical applications, causing large difference form failure its solder layer. Therefore, it is necessary to study aging law IGBT Firstly, improved dynamic model build three-phase rectifier circuit and correct power consumption error. Then constructing three-dimensional finite element analyzing chip temperature layer stress...

In this paper, the finite element on seismic behavior of steel plate shear wall with slits is analysed different waves, and earthquake acceleration.The results show that vertex displacement increased input wave acceleration increased, under same kind wave. Hysteretic good action waves. The has a performance.

Through the analysis of cultural ecological environment, humanities building is accord with requirement people for environmental comfort, and it expresses humanistic spirit, city character place spirit. This paper thinks that university campus a unique construction shall conform to requirements ecology, sustainable development architecture regional characteristic.

With the combination of large finite element software ABAQUS and strength reduction method, slope stability is researched. When factor variable in ABAQUS, evolutionary process plastic zone will be dynamic display. The method can applied to prediction location sliding surface factor, by using analysis for back side a first level hydro-power station, compare traditional limit equilibrium method. This also calculate reinforcement slope.

The finite element analysis on single plate steel frame the different seismic waves, earthquake acceleration are conducted. results showed that vertex displacement and base shear increase with increasing same wave, hysteretic behavior of Steel is very good. has a good property.