Results 131 to 140 of about 271,691 (311)
Analysis of Fatigue Failure of Francis Turbine Runner at Derbendikhan Hydropower Station
Sulaimani Journal for Engineering Sciences, 2017 Fatigue failures in Francis turbine runner are frequently occurred in hydropower plants, causing unexpected plant downtime and considerable financial loss. Decades of operational experience have shown that turbine runners develop fatigue cracks in areas,
Raza Abdulla Saeed
doaj
Fermi Surface Nesting and Anomalous Hall Effect in Magnetically Frustrated Mn2PdIn
Advanced Functional Materials, EarlyView.Mn2PdIn, a frustrated inverse Heusler alloy, showing electronic‐structure driven anomalous Hall effect with Weyl crossings, Fermi‐surface nesting and near‐zero magnetization ideal for low‐magnetization spintronics. Abstract Noncollinear magnets with near‐zero net magnetization and nontrivial bulk electronic topology hold significant promise for ...
Afsar Ahmed +7 more
wiley +1 more source
Conditioned pressure spectra and coherence measurements in the core of a turbofan engine [PDF]
Multiple and partial coherence functions and the corresponding conditioned coherent output spectra are computed between fluctuating pressures measured at two locations within the tailpipe of a turbofan engine and far-field acoustic pressure.
Karchmer, A.
core +1 more source
Vacuum radiation pressure fluctuations on electrons
Physical Review DThis paper is a continuation of a study of the properties and applications of quantum stress tensor fluctuations. Here we treat the vacuum fluctuations of the electromagnetic energy-momentum flux operator which has been averaged in space and time. The probability distribution of these fluctuations depends upon the details of this averaging and may ...
openaire +2 more sources
MOFs and COFs in Electronics: Bridging the Gap between Intrinsic Properties and Measured Performance
Advanced Functional Materials, EarlyView.Metal‐organic frameworks (MOFs) and covalent organic frameworks (COFs) hold promise for advanced electronics. However, discrepancies in reported electrical conductivities highlight the importance of measurement methodologies. This review explores intrinsic charge transport mechanisms and extrinsic factors influencing performance, and critically ...
Jonas F. Pöhls, R. Thomas Weitz
wiley +1 more source
Advanced Functional Materials, EarlyView.A multifunctional nanodiamond platform enables pH‐triggered Diazoxide (DZX) delivery and quantum sensing of subcellular radical dynamics in triple‐negative breast cancer cells. Diamond relaxometry revealed reduced lysosomal radicals during DZX‐induced mitochondrial radical elevation, providing insights into redox modulation and organelle‐ resolved ...
Kaiqui Wu +8 more
wiley +1 more source
Prediction of Maximum Safe Tripping Speed in Ultra-Deep Wells Based on PSO-Newton Algorithm
Shiyou jixieCurrent oil and gas exploration and development are shifting towards deep and ultra-deep zones， accompanied with frequent downhole incidents such as overflow and lost circulation in tripping processes， which reduce drilling efficiency and even threaten ...
Liang Haibo +3 more
doaj
Pressure Behaviors of Unstable Flow in the Wellbore during Wave Injection Hydraulic Fracturing
Shiyou jixie, 2020 To accurately understand the pressure behavior of unstable flow in the wellbore caused by wave injection hydraulic fracturing, considering the influence of fluid gravity and friction, and based on the theory of expansion-pipe elastic fluid, the pressure ...
Tong Shaokai, Gao Deli
doaj
An experimental study of airfoil-spoiler aerodynamics [PDF]
The steady/unsteady flow field generated by a typical two dimensional airfoil with a statically deflected flap type spoiler was investigated. Subsonic wind tunnel tests were made over a range of parameters: spoiler deflection, angle of attack, and two ...
Karamcheti, K., Mclachlan, B. G.
core +1 more source
Derivation of Aero-Induced Fluctuating Pressure Environments for Ares I-X [PDF]
, 2008 A description is given of the external aero-inducted fluctuating pressure model which was fit and anchored to wind tunnel data from the past 40 years.
Wilby, John F., Yang, Michael Y.
core +1 more source