In practical engineering, due to the residual magnetism in iron core of converter transformer, inrush current is generated case no-load closing, and leads an oil flow surge inside transformer. Under influence flow, gas relay plate will be deflected, when deflection angle too large, malfunction. Because lacking research on misoperation under excitation it difficult effectively suppress current. Therefore, finite element model electromagnetic hydraulic coupling transformer established this...

Single-atom nickel site-modified Si nanowires are utilized for photoelectrocatalytic CO 2 reduction to achieve nearly 100% selective generation.

Objective To explore the impact and mechanisms of COVID-19 on professional identity nursing students, providing theoretical practical insights to inform education reform. Method This study employed Colaizzi’s descriptive phenomenological method students’ experiences. Semi-structured interviews were conducted, data collection continued until information saturation was achieved. Data analysis followed seven-step approach: (1) reading all participants’ descriptions gain a general understanding,...

The geological conditions of hot dry rock (HDR) reservoirs are complex. geothermal mining HDR faces major challenges in the drilling and construction wells, fracturing to create storage, flowing extract heat. Vibration impacts help improve rock-breaking efficiency, where axial–torsional coupled vibration impact technology can increase bit penetration depth reduce stick–slip effect. To study feasibility efficiency axial–torsional-coupled impact-assisted Polycrystalline Diamond Compact (PDC)...

The extensive use of lithium-ion batteries (LIBs) has caused environmental pollution and waste resources. Developing sustainable recycling strategies for the cathode spent LIBs can bring about resource conservation benefits. In this work, in situ reconstruction functional reuse LiCoO2 were realized through two steps chemical delithiation hydrogen treatment. promotes to form a 3D layered structure, exposing more active sites increasing charge transfer. Thermal treatment induces transition...

Figuring out rock strength plays essential roles in the sub ground mining activities, such as oil and gas well drilling hydraulic fracturing, coal mining, tunneling, other civil engineering scenarios. To help understand effects of mineralogical composition on evaluating strength, this research tries to establish indirect prediction models by specific input mineral contents for common sedimentary rocks. Using samples collected from outcrops Sichuan Basin, uniaxial compression tests have been...

Near-term quantum devices generally suffer from shallow circuit depth and hence limited expressivity due to noise decoherence. To address this, we propose tensor-network-assisted parametrized circuits, which concatenate a classical tensor-network operator with effectively increase the circuit's without requiring physically deeper circuit. We present framework for variational algorithms that can solve many-body problems using shallower circuits. demonstrate efficiency of this approach by...

The Knill-Laflamme conditions distinguish exact quantum error correction codes, and they have played a critical role in the discovery of state-of-the-art codes. However, family codes is very restrictive one does not necessarily contain best-performing Therefore, it desirable to develop generalized quantitative performance metric. In this Letter, we derive near-optimal channel fidelity, concise optimization-free metric for arbitrary noise. provides narrow two-sided bound optimal code...

Abstract Ceramic proppants are critical products for holding induced fractures open and enhancing hydrogen productivity in low‐permeability reservoirs. Though the effects of proppant size type on well have been studied past, role surface wettability oil flow performance has not thoroughly investigated. To help readers industries understand wetting behavior ceramic proppants, this research was designed to analyze effect efficiencies water under different conditions (for example, various size,...

This study aimed to describe the current situation and explore overwork predictors among ICU nurses in China.Overwork is a comprehensive condition of labor where employees work for extended periods with high intensity pressure, which can negatively affect their health. Limited literature exists regarding prevalence, characteristics, professional identity, environment nurses.A cross-sectional design was conducted. The Professional Identification Scale Nurses, Practice Environment Nursing Work...

Since the invention of Brazilian test about eight decades ago, discussions on validity indirect tensile strength measurement by have always been focus in rock fracture mechanics. According to principles test, experimental data are only valid when a is initiated at/near disc-shaped planar center and propagates along diametral loading plane. However, traditional results can show readers final failure instead process. Meanwhile, accuracy analytical solutions numerical simulations profoundly...

Wellbore strengthening materials (WSMs) have been widely used to strengthen the wellbore stability and integrity, especially those lost circulation (LCMs) for mud loss impairment. To enhance effect rather than a impairment, plastering can be increase fracture gradient of wall minimize probability inducing new fractures. This is done by smearing mudcake pores forming an internal cake inside rock matrix using WSMs (or LCMs). Until now, particle size distribution (PSD) LCMs studied minimization...

CO2 dry fracturing technology is well-known for its advantages. Little water used in this technology, which able to ease the pressure of consumption on resources. Many abroad theoretical researches, laboratory experiments and field tests have been taken explore yield mechanism, adaptability pure liquid fracturing. These achievements applied a variety reservoirs transformation improven effectiveness stimulation treatment degree. The researches studies domestic didn't get popular until recent...