نتایج جستجو برای: drift spectroscopy

تعداد نتایج: 202719  

Journal: :American Journal of Science 1871

Journal: :Forerunners 2022

The global pandemic has underscored contemporary reliance on digital environments. This is particularly true among schools and universities, which, in response, shifted much of their instruction online. Because the rise e-learning logics, ed-tech industries, enterprise learning-management systems all threaten to further commodify instrumentalize higher education, these technologies platforms ha...

Journal: :international journal of civil engineering 0
mehdi mahdavi adeli faculty of civil eng., 424, hafez ave., tehran, iran, 15914 mehdi banazadeh no. 510, faculty of civil eng., 424, hafez ave., tehran, iran, 15914 ardeshir deylami no. 606, faculty of civil eng., 424, hafez ave., tehran, iran, 15914

the objective of this paper is to determine the drift demand hazard curves of steel moment-resisting frames with different number of stories in territory of tehran this is done through the combination of the results obtained from probabilistic seismic hazard analysis and the demand estimated through the best probabilistic seismic demand models. to select the best demand model, in this paper, a ...

Journal: :Ergodic Theory and Dynamical Systems 2016

Journal: :Academic Medicine 2020

Journal: :journal of agricultural science and technology 2015
s. wang g. j. dorr m. khashehchi x. he

the aim of the present study was to investigate the influence of nozzle configurations on spray drift and explain the influences using several atomization characteristics (length of spray sheet, spray angle, velocity distribution of flow field, fluctuation of velocity, and droplet size). nozzles manufactured by one company (lechler gmbh, germany) were tested by spraying local tap water in a win...

2007
O Grulke S Ullrich T Windisch T Klinger

Coherent drift modes and drift wave turbulence is studied in a collisionality dominated high-density helicon plasma. The drift wave instability is identified by comparison of the drift mode density fluctuations characteristics with a linear dispersion relation, which reproduces the experimentally observed bent eigenmode structures due to radial gradients of the collisionality profile. Special a...

2004
Michael S. Gray

Needham (1928) first noted the ‘drift’ of aquatic insects when examining the importance of terrestrial insects as trout food. When using a fine copper wire-meshed net to collect benthos in streams near Ithaca, NY he discovered large numbers of aquatic insects present his samples. Drift attracted more attention from researchers in the 1950’s after Muller quantified drift and compared drift with ...

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