Understanding the temporal and spatial distribution patterns of arc magmatism is crucial for interpreting evolution ancient crust formation because subduction a mature ocean basin involves multiple stages from initiation to collision, resulting in different kinds magmas overriding plate. A comprehensive compilation synthesis magmatism, combined with systematic studies key areas within relevant convergent margins, can effectively reveal specific processes, such as ridge initiation. The...

The reliability estimation of mechanical seals is crucial importance due to their wide applications in pumps various systems. Failure might cause leakage, and lead system failure other relevant consequences. In this study, the for based on bivariate dependence analysis considering model uncertainty proposed. friction torque leakage rate are two degradation performance indicators that can be described by Wiener process, Gamma inverse Gaussian process. between different copula functions. Then...

In the marine industry, heave compensation systems are applied to equipment compensate for adverse effects of waves and hydraulic system is usually used as power systems. This article introduces importance theory opportunistic maintenance (OM) strategy provide guidance The working principle a semi-active specific states its components also first explained. Opportunistic system. Moreover, joint integrated measure (JIIM) between different at moments analyzed basis selection on which perform...

Kawasaki disease is a type of acute febrile rash that common in children and characterised by primary lesions systemic middle small vasculitis, which can lead to coronary artery lesions. Manganese superoxide dismutase (MnSOD), one the most important antioxidases human body, plays key role maintaining balance free radicals body. Two single-nucleotide polymorphisms (SNPS) (rs4880 rs5746136) MnSOD gene were related oxidative stress disease. The purpose this study explore possible relationship...

As a crucial component, the vapor cell serves as fundamental sensing element in various atomic sensors, and electric heating is typically required to enhance density of alkali metal atoms. Due presence driving current, can unavoidably introduce interfering magnetic fields, which affect performance sensors. To suppress this field interference, heater trace configuration must be designed achieve self-suppression effect. However, previous studies have solely focused on optimization design...

Due to the significant increase in non linear loads and worldwide trend establish smart grids, harmonic level electricity grids is significantly increased. In addition their impact on power quality, currents can have a devastating effect system protection performance especially operation of over current relays which are designed operate efficiently at fundamental frequency. The distorted waveform will affect rely may cause relay trip under normal operating conditions. To solve this problem,...

The second member of Triassic Feixianguan Formation in Jiulongshan area northwestern Sichuan Basin has made breakthroughs natural gas exploration and great potential. Drilling data show that the section developed multiple sets reservoirs, which are mainly concentrated upper sub-member Formation. overall heterogeneity is strong, lithology physical properties complex changeable, reservoir thickness thin, drilling less, so it difficult to determine spatial distribution characteristics oolitic...

Large Language Model (LLM) has revolutionized the field of artificial intelligence, with their capabilities expanding rapidly due to advances in deep learning and increased computational resources. The mixture-of-experts (MoE) model emerged as a prominent architecture LLM, better balancing performance efficiency. MoE allows for effective scaling efficient parallel processing, but GEMM (General Matrix Multiply) large parameters introduce challenges terms computation efficiency communication...

Accurate reliability estimation for reciprocating seals is of great significance due to their wide use in numerous engineering applications. This work proposes a method based on multivariate dependence analysis different performance indicators. Degradation behavior corresponding each indicator first described by the Wiener process. Dependence among indicators then captured using D-vine copula, and weight-based copula selection utilized determine optimal bivariate relationship. A two-stage...

In conventional sequence stratigraphy research, owing to the limitation of resolution seismic data, strata can only be divided into third order sequences at most on profile. this study, vertical fourth is using high resolutions gamma ray (GR), uranium (U), thorium (Th), and potassium (K) curves in logging curves, depth system then accurately superimposed profile through one dimensional forward modelling. Subsequently, three Fourier transform technology, dip angle azimuth information data...

As a crucial component, the vapor cell serves as fundamental sensing element in various atomic sensors, and electric heating is typically required to enhance density of alkali metal atoms. Due presence driving current, can unavoidably introduce interfering magnetic fields, which affect performance sensors. To suppress this field interference, heater trace configuration must be designed achieve self-suppression effect. However, previous studies have solely focused on optimization design...

The spin-exchange relaxation-free (SERF) atomic magnetometer has high sensitivity for magnetic field measurement, and is of great significance in frontier physics research, biomagnetic detection other fields. In recent years, as one the important development directions, its spatial resolution multi-channel capabilities have been further extended. this paper, based on three-axis in-situ zeroing method (MFZM), accurate measurement static realized, using digital micro-mirror device (DMD)...

The acoustic absorption performance of ultra-thin metal micro-perforated panels (Mpp) with different thicknesses backed by an air cavity is studied in this paper. Mpp structural parameters are processed the computer numerical control machine tool and tested impedance tube. experimental results show that absorber cannot be predicted directly sound theory rigid Mpp. It can concluded vibration ignored. In addition, further optimized rationally designing coupling