Results 11 to 20 of about 461,123 (254)
Observations of the plasma flow in comet P/Swift‐Tuttle [PDF]
, 1993 We present direct ground based observations of the plasma flow sunward and tailward of the nucleus of comet P/Swift‐Tuttle. The observations are long‐slit high resolution spectra of the H_2O^+ emission centered at 6199Å with a velocity resolution of ...
Brown, Michael E. +2 more
core +1 more source
Spontaneous excitation of an accelerated hydrogen atom coupled with electromagnetic vacuum fluctuations [PDF]
, 2006 We consider a multilevel hydrogen atom in interaction with the quantum electromagnetic field and separately calculate the contributions of the vacuum fluctuation and radiation reaction to the rate of change of the mean atomic energy of the atom for ...
H. C. Rosu +6 more
core +2 more sources
EXPERIMENTAL STUDY OF SEISMIC RESPONSE OF THE SQUARE TUNNEL IN GRANULAR SOIL
Journal of Engineering and Sustainable Development, 2020 In this study a series of shaking table tests were carried out to investigate the effect of tunnel model depth and direction of ground acceleration on the horizontal acceleration of tunnel model and soil beside it, ground surface settlement, and the ...
Omar Yaseen Almashhadany +1 more
doaj +3 more sources
Dynamic Tire Pressure Sensor for Measuring Ground Vibration
Sensors, 2012 This work presents a convenient and non-contact acoustic sensing approach for measuring ground vibration. This approach, which uses an instantaneous dynamic tire pressure sensor (DTPS), possesses the capability to replace the accelerometer or directional
Ming L. Wang +2 more
doaj +1 more source
Spektra: Jurnal Fisika dan Aplikasinya, 2020 Analysis of a peak ground acceleration value and earthquake intensity in Banten Province has been carried out using historical earthquake data from 2008 to 2018. This research aims to describe a prone area of the earthquake. The specification of data was
Elsi Ariani
doaj +1 more source
Enhancing Acceleration Radiation from Ground-State Atoms via Cavity Quantum Electrodynamics [PDF]
, 2003 When ground state atoms are accelerated through a high Q microwave cavity, radiation is produced with an intensity which can exceed the intensity of Unruh acceleration radiation in free space by many orders of magnitude.
Alexey Belyanin +20 more
core +3 more sources
Sensitivity of Building Loss Estimates to Major Uncertain Variables [PDF]
, 2002 This paper examines the question of which sources of uncertainty most strongly affect the repair cost of a building in a future earthquake. Uncertainties examined here include spectral acceleration, ground-motion details, mass, damping, structural force ...
Beck, James L. +2 more
core +1 more source
Effects and mechanisms of ground vibration randomness on peak surface acceleration
Yantu gongcheng xuebao, 2023 The randomness of artificial seismic vibration has important influences on the peak value of ground acceleration. Based on the results of soil layer shear wave velocity and soil body nonlinear statistics, three soil layer seismic response models are ...
QI Wenhao 1, 2, CHEN Fangxiao 1, 2, LI Linfang 1, 2, ZHANG Xiankai 1, 2
doaj +1 more source
Active Galactic Nuclei as High Energy Engines [PDF]
, 1999 Active Galactic Nuclei are considered as possible sites of cosmic ray acceleration and some of them have been observed as high energy gamma ray emitters (Blazars). There naturally comes an appealing idea that the acceleration of the highest energy cosmic
Aharonian +31 more
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Italian seismic amplification factors for peak ground acceleration and peak ground velocity
Journal of Maps, 2022 Ground motion modification over large areas is generally evaluated by focusing on source effects disregarding local lithostratigraphic site conditions. Hence, amplification maps of peak ground acceleration and peak ground velocity are proposed to improve
Amerigo Mendicelli +8 more
doaj +1 more source