نتایج جستجو برای: vertical spectrum

تعداد نتایج: 315953  

Journal: :Astronomische Nachrichten 2023

Oscillation power spectrum of the Kepler red giant KIC 1027337. The left panel shows raw spectrum, where frequency maximum oscillation power, νmax, is indicated by two almost coincident vertical lines corresponding to reference measurement (dashed and with new FRA pipeline (solid black), respectively. right optimally smoothed together a local fit oscillations centered around represented orange ...

Journal: :SIAM J. Math. Analysis 2012
Ray Treinen

The symmetry of floating drops is considered. Under conditions that the free boundary is flat it is shown that all three component interfaces are symmetric about a vertical line.

پایان نامه :وزارت علوم، تحقیقات و فناوری - پژوهشگاه بین المللی زلزله شناسی و مهندسی زلزله 1382

با افزایش دانش بشر در باره پدیده زلزله و نحوه رفتار سازه ها در زمان زلزله، راهکارهای افزایش ایمنی در مقابل این پدیده نیز به روز می شوند. لذا هدف از این تحقیق ، ارائه دو روش تحلیل شبه استاتیکی غیرخطی به نام ، الف: روش تحلیل طیف ظرفیت ‏‎capacity spectrum method‎‏ و ب:روش تحلیل استاتیکی فزاینده غیرخطی مودی ‏‎modal pushover analysis‎‏ و مقایسه خطای آنها نسبت به روش تحلیل دینامیکی تاریخچه زمانی غیر ...

2016
Sansao A. Pedro Shirley Abelman Henri E. Z. Tonnang

Rift Valley fever (RVF) outbreaks are recurrent, occurring at irregular intervals of up to 15 years at least in East Africa. Between outbreaks disease inter-epidemic activities exist and occur at low levels and are maintained by female Aedes mcintoshi mosquitoes which transmit the virus to their eggs leading to disease persistence during unfavourable seasons. Here we formulate and analyse a ful...

Journal: :J. Applied Mathematics 2012
Mi-An Xue Jinhai Zheng Pengzhi Lin

A two-phase fluid flow model solving Navier-Stokes equations was employed in this paper to investigate liquid sloshing phenomena in cubic tank with horizontal baffle, perforated vertical baffle, and their combinatorial configurations under the harmonic motion excitation. Laboratory experiment of liquid sloshing in cubic tank with perforated vertical baffle was carried out to validate the presen...

2010
HUBERT CHANSON

A tidal bore develops in an estuary when the tidal range exceeds 4.5–6 m and the estuarine bathymetry amplifies the tidal wave. The bore is an abrupt rise in water depth associated with a discontinuity in velocity and pressure fields at the front. Herein the free-surface properties and the turbulent mixing of light-weight particles were investigated during the passage of tidal bores. The free-s...

1998
P. M. W. Kalberla G. Westphalen U. Mebold Dap Hartmann W. B. Burton

We find solid evidence for diffuse Hi gas at substantial z heights in our Galaxy, with a velocity dispersion of σ = 60 km s −1 and a vertical projected column density of N Hi = 1.4 · 10 19 cm −2. This pervasive component of the emission spectrum could be identified in the Leiden/Dwingeloo 21-cm Survey (LDS) after increasing the accuracy further by correcting the observations for reflections fro...

Journal: :IOP conference series 2023

Abstract Sumatra Island is an island located in the subduction zone of Indo-Australian plate towards Eurasia. The geological structure on Semangko Fault. There active volcanic activity, such as Bukit Barisan Mountains, which makes vulnerable to eruptions. study was conducted Lake Toba, North Sumatra, using earthquake data from IRIS station. purpose this investigate amplitude determining presenc...

2016
Samuel S. Urmy Craig E. Williamson Taylor H. Leach S. Geoffrey Schladow Erin P. Overholt Joseph D. Warren

We used a natural experiment to test whether wildfire smoke induced changes in the vertical distribution of zooplankton in Lake Tahoe by decreasing incident ultraviolet radiation (UV). Fires have a variety of effects on aquatic ecosystems, but these impacts are poorly understood and have rarely been observed directly. UV is an important driver of zooplankton vertical migration, and wildfires ma...

2010
Elaine M. Smith Michael A. Parker Linda M. Rubenstein Thomas H. Haugen Eva Hamsikova Lubomir P. Turek

Few large studies have evaluated concordance based on a broad spectrum of human papillomavirus (HPV) types in oral and genital specimens of mothers and their recently born infants. This information is important in determining whether HPV vaccines administered prior to pregnancy may be useful for preventing vertical transmission. HPV DNA was positive in 30% of mothers and 1.5% of newborns. Mater...

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