نتایج جستجو برای: specially large scale wave activities can contribute to stratosphere
تعداد نتایج: 11140008 فیلتر نتایج به سال:
advantages and disadvantages of using “stokes parameters” in exploration of inertia-gravity wave properties are discussed in this paper. the survey is carried out on an inertia-gravity wave event (igws in what follows) that occurred over iran from 7 to 9 february 2012. applying this technique for investigation of atmospheric igws was recommended by vincent and fritts (1987) and then developed b...
terms of address as an important linguistics items provide valuable information about the interlocutors, their relationship and their circumstances. this study was done to investigate the change route of persian address terms in the two recent centuries including three historical periods of qajar, pahlavi and after the islamic revolution. data were extracted from a corpus consisting 24 novels w...
border regions of Russia, Mongolia, China, and Kazakhstan (Fig. 4E). These mountain waves are present at all heights, reaching the uppermost levels of the stratosphere (Fig. 4C). There is also evidence of more isolated mountain wave activity over the Alps and the AlaskaYukon region. Mountain waves are largely absent in both the observations and model results over other mountainous regions, such...
we show that when both sources ( lepton flavor violation sources and cp-violating phases) are present, the electric dipole moment of the electron, $d_e$, receives a contribution from the phase of the trilinear $a$-term of staus, $phi_{a_ au}$. for $phi_{a_ au}=pi/2$, the value of $d_e$, depending on the ratios of the lfv mass elements, can range between zero and three orders of magnitude a...
Abstract Northern Hemisphere (NH) climate has experienced various coherent wintertime multidecadal trends in stratosphere, troposphere, ocean, and cryosphere. However, the overall mechanistic framework linking these is not well established. Here we show, using long-term transient forced coupled simulation, that large parts of NH-multidecadal changes can be understood within a damped stratospher...
data envelopment analysis (dea) is a powerful tool for measuring relative efficiency of organizational units referred to as decision making units (dmus). in most cases dmus have network structures with internal linking activities. traditional dea models, however, consider dmus as black boxes with no regard to their linking activities and therefore do not provide decision makers with the reasons...
the rise and stublishment of safavid dynasty was depend on triangle of tasavof, tashayo and royalty, kings legitimized their power upon these. therefore for the understanding the functions of that period we must explore the role of this elements. although application and emphsise upon dignities such as; complete mentor (morshede kamel), deputy of absent imam (nayebe imame ghayeb), and god’s sha...
The probability density on a height-meridional plane of negative refractive index squared f (n 2 k <0) is introduced as a new analysis tool to investigate the climatology of the propagation properties of stationary planetary waves based on NCEP/NCAR re-analysis data for 44 Northern Hemisphere boreal winters (1958–2002). This analysis 5 shows the control of the atmospheric state on planetary wav...
abstract the first purpose of this study was to investigate the effect of consciousness-raising (c-r) activities on learning grammatical structures (simple present tense in this case) by iranian guidance school efl learners. the second one was to investigate the effect of gender on learning the simple present tense through c-r activities and tasks. finally, this study aimed to investigate the ...
in recent years many researchers have been focused on interaction of small molecules with dna. dna is generally the primary intracellular of anticancer drugs, so the interaction between small molecules and dna can cause dna damage in cancer cells, blocking the division of cancer cells and resulting in cell death. the flavonoids are a large group of polyphenolic natural products that are widely ...
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