نتایج جستجو برای: peak floor acceleration pfa

تعداد نتایج: 218616  

Astaraki L Behboodi Z Haghani H Jamshidimanesh M,

Background: Parental - fetal attachment behaviors play important role in pregnancy outcome, maternal and paternal identity and also children development. It seems that these behaviors are different in infertile couples. Knowing the relationship between infertility and parental - fetal attachment was the aim of this study Materials and Methods: For this cross - sectional study that was done in 1...

Journal: :International journal of sports medicine 2001
M Ogon A R Aleksiev K F Spratt M H Pope C L Saltzman

Use of modified shoes and insole materials has been widely advocated to treat low back symptoms from running impacts, although considerable uncertainty remains regarding the effects of these devices on the rate of shock transmission to the spine. This study investigated the effects of shoes and insole materials on a) the rate of shock transmission to the spine, b) the temporal response of spina...

Journal: :Earthquake Engineering & Structural Dynamics 2023

Abstract This paper investigates the influence of typical gravity connections on seismic demands steel concentrically braced frame (CBF) buildings with friction dampers as dissipative floor connectors. The investigated include (i) shear tab, (ii) clip angle, (iii) flush end‐plate and (iv) tab bottom T‐stub. It is shown that behavior framing system (GFS) practically insensitive to connection typ...

2007
J. H. Carleton W. M. Hamner

Seasonal and diel variations in community structure and abundance of the lagoon hyperbenthic community were examined at Davies Reef, Great Barrier Reef. The lagoon floor community differed from that in the overlying water, it was faunistically more uniform, and it was assembled into statistically distinct seasonal and diel groupings. The lagoon floor community was characterized by reef-associat...

Seismic hazard assessment like many other issues in seismology is a complicated problem, which is due to a variety of parameters affecting the occurrence of an earthquake. Uncertainty, which is a result of vagueness and incompleteness of the data, should be considered in a rational way. Using fuzzy method makes it possible to allow for uncertainties to be considered. Fuzzy inference system,...

2008
THOMAS A. JOHNSTONE

We prove that the PFA lottery preparation of a strongly unfoldable cardinal κ under ¬0 forces PFA(א2-preserving), PFA(א3-preserving) and PFAא2 , with 2 ω = κ = א2. The method adapts to semi-proper forcing, giving SPFA(א2-preserving), SPFA(א3-preserving) and SPFAא2 from the same hypothesis. It follows by a result of Miyamoto that the existence of a strongly unfoldable cardinal is equiconsistent ...

2008
S. Bauer M. Markl B. A. Jung

Introduction: Parallel imaging methods require calibration to coil sensitivities. The autocalibration approach acquires the calibration data along with the normal data acquisition while sampling the full k-space center with a certain number autocalibration lines Nacs [1]. Thus, the net acceleration of such an experiment depends on the undersampling factor R, the number of autocalibration lines ...

Journal: :Buildings 2022

Full measurements for the wind field atop a 32-storey building (supported by four huge columns) and dynamic responses of different floors were conducted on 15 October 2017 to obtain translational torsional high-rise during Typhoon Khanun. The time histories angular acceleration 24th 32nd obtained using RA013 rotational accelerometer, those 6th, 12th, 18th, 24th, 30th along axial direction recor...

Journal: :Thorax 1994
P S Burge M N Richardson

The case is described of a 44 year old pharmacist who developed severe occupational asthma threatening his continued employment, confirmed by serial measurement of peak expiratory flow at home and work. The cause was found to be the cleaning agent used in his office when it was unoccupied. Bronchial challenge testing identified the specific agent to which he was sensitised as lauryl dimethyl be...

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