Results 21 to 30 of about 216,397 (302)
Photospheric flux density of magnetic helicity
, 2005 Several recent studies have developed the measurement of magnetic helicity flux from the time evolution of photospheric magnetograms. The total flux is computed by summing the flux density over the analyzed region.
P. Démoulin +5 more
core +3 more sources
Revista Brasileira de Ciência do Solo, 2009 A adubação nitrogenada ideal deve ser definida para satisfazer a necessidade da cultura, mas com o mínimo de risco ao ambiente. Para isso, é necessário que a recomendação da adubação nitrogenada seja a mais exata possível.
Flávia Carvalho Silva Fernandes +1 more
doaj +1 more source
IEEE Access, 2023 Switched reluctance motor has the advantages of the high efficiency, low cost, strong fault tolerance, and high reliability. A 5.5 kW, 12/8 pole switched reluctance motor is designed.
Han Jichao +4 more
doaj +1 more source
Radon flux density measurement on rock surfaces
, 2022 More than half of the dose from all natural sources of radiation is created by radon and its daughter decay products. The radon hazard of a building site is evaluated by measuring the radon flux density.
Stavitskaya, Kseniya O. +4 more
core +1 more source
Investigation of an Ironless Permanent Magnet Linear Synchronous Motor with Cooling System
Applied Sciences, 2016 In this paper, a novel ironless linear synchronous motor with a cooling system is proposed. Firstly, the topology of this ironless linear synchronous motor with a cooling system is introduced.
Lu Zhang +4 more
doaj +1 more source
IN-SITU MEASURING METHOD OF RADON AND THORON DIFFUSION COEFFICIENT IN SOIL [PDF]
Vestnik KRAUNC: Fiziko-Matematičeskie Nauki, 2014 A simple and valid in-situ measurement method of effective diffusion coefficient of radon and thoron in soil and other porous materials was designed. The analysis of numerical investigation of radon and thoron transport in upper layers of soil revealed ...
V.S. Yakovleva
doaj +1 more source
Iron Loss Analysis and Efficiency Calculation of Double Stator HTS Machine With Stationary Seal
IEEE Access, 2022 This paper mainly analyzes the iron loss of a double stator high-temperature superconducting (HTS) machine with stationary seal and calculates its efficiency. Firstly, according to the field-modulation theory, the air-gap flux density harmonic components
Wenzhong Ma +4 more
doaj +1 more source
A nonlinear equivalent circuit model for flux density calculation of a permanent magnet linear synchronous motor [PDF]
Serbian Journal of Electrical Engineering, 2015 In this paper, a nonlinear magnetic equivalent circuit is presented as an analytical solution method for modeling of a permanent magnet linear synchronous motor (PMLSM). The accuracy of the proposed model is verified via comparing its simulation
Ghanaee Reza +4 more
doaj +1 more source
Asymmetric mass-loss from the white dwarf WD 0253+209 : Secret revealed
Bibechana, 2012 Dust structures around the white dwarf WD 0253+209 is studied in 100 and 60 micron infrared image. These images are received from Infrared Astronomical Satellite Survey (IRAS Survey).
Binil Aryal
doaj +3 more sources
The Developmental Basis of Stomatal Density and Flux [PDF]
Plant Physiology, 2016 Equations for stomatal density and maximum theoretical stomatal conductance as functions of stomatal initiation rate, epidermal cell size, and stomatal size enable scaling from development to flux.
Lawren, Sack, Thomas N, Buckley
openaire +2 more sources