Results 91 to 100 of about 255,812 (300)
Managing water loss for sustainability of rural water supply [PDF]
, 2007 Water supply for rural areas flows through pipelines from many sources such as underground water and reservoirs. Due to factors such as human activities, geographic changes and natural hazards, pipelines are exposed to the ground, crack, leak and burst.
Abu Bakar, Muhamad Shahbani +2 more
core
Unprecedented Spin‐Lifetime of Itinerant Electrons in Natural Graphite Crystals
Advanced Functional Materials, EarlyView.Graphite exhibits extraordinary spintronic potential, with electron spin lifetimes reaching 1,000 ns at room temperature ‐ over 100 times longer than graphene‐based devices. Magnetic resonance spectroscopy reveals strong anisotropy: out‐of‐plane spins live 50 times longer than their in‐plane counterparts.
Bence G. Márkus +5 more
wiley +1 more source
Design of the Polished Rod Load Simulation System for Pumping Unit Type Test
Shiyou jixie, 2017 To simulate the polished rod load of the pumping unit, a new polished rod load simulation test device has been designed. In the simulation test device, throttle valve and relief valve has been used to simulate the oil load of pumping unit, the heavy load
Wang Hongbo +3 more
doaj
Resonant optical pumping of a Mn spin in a strain free quantum dot
, 2013 We report on the spin properties of individual Mn atoms in II-VI semiconductor strain free quantum dots. Strain free Mn-doped CdTe quantum dots are formed by width fluctuations in thin quantum wells lattice matched on a CdTe substrate. These quantum dots
Besombes, L., Boukari, H.
core +3 more sources
Charge‐Induced Morphing Gels for Bioinspired Actuation
Advanced Functional Materials, EarlyView.This study introduces a novel electroactive actuation mechanism that enables the gel material to generate substantial and reversible shape‐changing while preserving topological and isochoric (volumetric) equivalence. The resultant morphing behaviors can mimic the movements of muscle‐driven organelles in nature, including cilia‐like beating and ...
Ciqun Xu +4 more
wiley +1 more source
Kinematic Analysis of Long Stroke Pumping Unit with Post Pulley
Jixie chuandong, 2017 In view of the shortcomings of high peak of crank torque and polished rod load,short stroke and serious wear of steel wire rope,the structural characteristics of the conventional beam pumping unit are analyzed.
Sun Wenbin +3 more
doaj
STUDY OF MARKOFF MODELS OF PETROLEUM COMPLEX PUMPING UNITS FAILURE RATE
Известия высших учебных заведений: Нефть и газ, 2016 The article presents a method developed for modeling the petroleum complex pumping units failure rate and reliability based on Markoff stochastic processes.
E. A. Petrovskiy, M. V. Gagina
doaj +1 more source
Spin Transport and Spin Pump in Graphene-like Materials: Effect of tilt in Dirac cones
, 2018 We study the spin transport phenomena in two-dimensional graphene-like materials with arbitrary tilted Dirac cones. The tilt arises due to next-nearest hopping when the bottom of the conduction band and top of the valence band does not simultaneously ...
Sinha, Debabrata
core +1 more source
Microsphere Autolithography—A Scalable Approach for Arbitrary Patterning of Dielectric Spheres
Advanced Functional Materials, EarlyView.MicroSphere Autolithography (µSAL) enables scalable fabrication of patchy particles with customizable surface motifs. Focusing light through dielectric microspheres creates well defined, tunable patches via a conformal poly(dopamine) photoresist. Nearly arbitrary surface patterns can be achieved, with the resolution set by the index contrast between ...
Elliott D. Kunkel +3 more
wiley +1 more source
Exceptional Points in a Non-Hermitian Topological Pump
, 2017 We investigate the effects of non-Hermiticity on topological pumping, and uncover a connection between a topological edge invariant based on topological pumping and the winding numbers of exceptional points.
Chong, Y. D. +3 more
core +1 more source