نتایج جستجو برای: wave one®

تعداد نتایج: 2182616  

Journal: :iranian endodontic journal 0
khaly bane babacar faye mouhamed sarr seydina o niang diouma ndiaye pierre machtou

i ntroduction: the aim of this study was to compare the shaping ability of two single-file systems and conventional rotary instruments in severely curved root canals of extracted human molars. methods and materials: mesiobuccal canals of 120 mandibular molars with angles of curvature ranging between 25 ° and 35 ° and radii of curvature from 5 to 9 mm, were divided into three groups ( n =40). in...

Journal: :international journal of civil engineering 0
b. saghafian a.r. shokoohi

time–area method is one of the most widely applied techniques of watershed routing, and can be potentially used as a distributed model. in this paper, a fundamental flaw in the arrangement of subareas in the original time-area histogram is identified for one-dimensional flow. this is conducted on the basis of comparing time-area hydrograph with that of the kinematic wave theorem. accordingly, a...

Journal: :Acoustics 2022

The second-order partial differential wave Equation (Cauchy’s first equation of motion), derived from Newton’s force equilibrium, describes a standing field consisting two waves propagating in opposite directions, and is, therefore, “two-way equation”. Due to the second order differentials analytical solutions only exist few cases. “binomial factorization” linear two-way operator into first-ord...

Journal: :Acoustics 2021

The coordinate-free one-way wave equation is transferred in spherical coordinates. Therefore it necessary to achieve consistency between gradient, divergence and Laplace operators establish, beside the conventional radial Nabla operator ∂Φ/∂r, a new variant ∂rΦ/r∂r. two variants differ near field term Φ/r whereas far r≫0 there asymptotic approximation. Surprisingly, more complicated gradient ∂r...

2013
Masumi SHIMOJO Shizuyo HASHIMOTO Kazunari SHIBATA Tadashi HIRAYAMA Hugh S. HUDSON Loren W. ACTON

We have found 100 X-ray jets in the database of full Sun images taken with the Soft X-ray Telescope (SXT) aboard Yohkoh during the period from 1991 November through 1992 April. A statistical study for these jets results in the following characteristics: 1) Most are associated with small flares (microflaressubflares) at their footpoints. 2) The lengths lie in the range of a few x 10-4 x 10 km. 3...

Journal: :Mathematics and Computers in Simulation 2003
M. Chen

This paper is centered at deriving and studying systems modeling bi-directional surface waves over an uneven or a moving bottom. Compared with the huge amount of work on model equations describing one-way propagation of water waves, much less attention has been given to Boussinesq systems describing two-way propagation of water waves, especially to the systems which are externally forced.

2007
Emily E. Brodsky Vassilis Karakostas Hiroo Kanamori

The M•,=7.4 Izmit, Turkey earthquake triggered widespread regional seismicity in Greece over a study region extending from 400 km to nearly 1000 km away from the epicenter. Small events began immediately after the passage of the mainshock surface waves suggesting that the transient stresses of the seismic waves were the trigger. The increase in cataloged earthquakes in ordinary continental crus...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه علوم پایه دامغان - دانشکده علوم پایه دامغان 1392

ساختارهای مزوسکوپیک شامل لایه های فرومغناطیس و ابررسانا مورد توجه زیادی قرار گرفته اند. این ساختارها همبستگی کوانتومی بین آثار همدوسی در فلز عادی یا فرومغناطیس و همدوسی ذاتی ابررسانایی را که توسط بازتاب آندریو تامین می شود، به نمایش می گذارند. در این پایان نامه رسانندگی تونلی یک پیوند ابررسانای نوع-p‎/ فلز عادی/ فرومغناطیس ‎( f/n/p-wave sc)‎ بر پایه گرافن را با استفاده از معادله دیراک-بوگولیوبو...

Journal: :Australian Journal of Physics 1975

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