نتایج جستجو برای: ground vibration

تعداد نتایج: 190880  

2013
Georgios Kaloutsakis Andrew Reimer Donghwa Jeong Kiju Lee

Patients who undergo inter-hospital transfer experience increased relative mortality, ranging from 10 to 100% higher than non-transferred patients. The high-cost, increased risk of complications and poor outcomes of transferred patients warrant the critical examination of potential causes. One of the major causes may be the external stressors that patients are exposed to during medical transpor...

Journal: :Journal of The South African Institute of Mining and Metallurgy 2021

SYNOPSIS This paper details an assessment of stemming practices at a South African opencast coal mine and their influence on ground vibration air blast. Quantitative qualitative analysis methods were used for the study. The parameters assessed quantitative analyses included length, material type, blast-hole depth, burden, spacing. Pre-blast data from was analysed to determine deviation between ...

Journal: :Journal of Low Frequency Noise, Vibration and Active Control 2003

Journal: :Science of The Total Environment 2021

External sources such as traffic and construction work cause noise vibration in nearby buildings, potentially annoying human residents. Today, almost every fifth European is harmfully affected by vibration. Wave barriers placed on or embedded within the soil between source receiver can mitigate transmission of ground vibration, airborne be reduced a similar manner with screen acting barrier. As...

2005
T. Maeda Y. Sugiura T. Hirai

Bayon temple, Angkor, built in the late 12th century to the early 13th century, is a masonry temple made of sandstone which has deteriorated possibly due to rain, plants, settlements, and so on. Strong winds blowing more than 20m/sec were observed in the rainy season, which may cause vibration of the structure either directly or via ground motion, we may add wind induced vibration to the list o...

2003
A. Seryi L. Hendrickson T. O. Raubenheimer P. Tenenbaum M. Woodley D. Schulte

The performance of high energy linear colliders depends critically on the stability with which they can maintain the collisions of nanometer-size beams. Ground motion and vibration, among other effects, will produce dynamic misalignments which can offset the beams at the collision point. A system of train-to-train and intra-train beambeam feedbacks, possibly combined with additional beamindepen...

2012
Muhammad E. Rahman Trevor Orr

This paper presents the use of three-dimensional finite elements coupled with infinite elements to investigate the ground vibrations at the surface in terms of the peak particle velocity (PPV) due to construction of the first bore of the Dublin Port Tunnel. This situation is analysed using a commercially available general-purpose finite element package ABAQUS. A series of parametric studies is ...

2017
Lotfi Beji Laredj Benchikh

Underground tunnel face bolting and pipe umbrella reinforcement are one of the most challenging tasks in construction whether industrial or not, and infrastructures such as roads or pipelines. It is one of the first sectors of economic activity in the world. Through a variety of soil and rock, a cyclic Conventional Tunneling Method (CTM) remains the best one for projects with highly variable gr...

Journal: :The Journal of chemical physics 2004
Yuji Yamada Takayuki Ebata Masakazu Kayano Naohiko Mikami

The intramolecular vibrational energy redistribution (IVR) of the OH stretching vibration of jet-cooled phenol-h6 (C6H8OH) and phenol-d8 (C6D8OH) in the electronic ground state has been investigated by picosecond time-resolved IR-UV pump-probe spectroscopy. The OH stretching vibration of phenol was excited with a picosecond IR laser pulse, and the subsequent temporal evolutions of the initially...

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