Results 21 to 30 of about 110,105 (248)

Effects of Strongbacks and Strappings on Vibrations of Timber Truss Joist Floors

open access: yesShock and Vibration, 2021
It is well known that the vertical vibrations of lightweight timber floors would cause discomfort to the occupants. As a new kind of flooring system, the metal-plate-connected timber truss joist floors were developed due to their larger spans and easier ...
Shuo Xue   +4 more
doaj   +1 more source

Improving the efficiency of applying the method of slab and floor lifting [PDF]

open access: yesE3S Web of Conferences, 2023
Currently, in relation to the problem of erecting buildings and structures using the method of lifting of slabs and floors, there is a need to evaluate the effectiveness of the organizational and technical solutions in the process of construction and ...
Zholtikov Artyom   +2 more
doaj   +1 more source

Carrier-to-Noise-Threshold Filtering on Off-Shore Wind Lidar Measurements

open access: yesSensors, 2019
Wind lidar observations are characterized by a Carrier-to-Noise-Ratio that is often used to filter the observations. The choice of the Carrier-to-Noise-Ratio threshold value for the wind lidar observations is found to have an effect on the climatological
Sven-Erik Gryning, Rogier Floors
doaj   +1 more source

Modelling global offshore turbulence intensity including large-scale turbulence, stability and sea state [PDF]

open access: yesWind Energy Science
This study delivers a method and datasets for a global offshore atlas for turbulence intensity (TI) from 10 to 200 m. The method includes both surface-driven three-dimensional boundary-layer turbulence and large-scale two-dimensional turbulence.
X. G. Larsén, M. Imberger, R. Floors
doaj   +1 more source

Damping Assessment of Lightweight Timber Floors Under Human Walking Excitations

open access: yesApplied Sciences, 2019
Vibrations on timber floors are among the most common serviceability problems in social housing projects. The presence of low damping levels on these floors could cause excessive vibrations in a range of frequency and amplitude that generate discomfort ...
Alexander Opazo-Vega   +2 more
doaj   +1 more source

A cross sectional study of prevalence, risk factors, population attributable fractions and pathology for foot and limb lesions in preweaning piglets on commercial farms in England [PDF]

open access: yes, 2009
Background: In a cross sectional study of 88 indoor and outdoor English pig farms, the prevalence of foot and limb lesions in 2843 preweaning piglets aged 1–4 weeks from 304 litters was recorded.
Green, L   +14 more
core   +1 more source

Lidar observations of marine boundary-layer winds and heights: a preliminary study

open access: yesMeteorologische Zeitschrift, 2015
Here we describe a nearly 1-yr meteorological campaign, which was carried out at the FINO3 marine research platform on the German North Sea, where a pulsed wind lidar and a ceilometer were installed besides the platform's 105-m tower and measured winds ...
Alfredo Peña   +2 more
doaj   +1 more source

Transverse Distribution of Concentrated Loads on Timber Composite Floors

open access: yesProceedings, 2018
Timber-concrete composite floors can be seen as bi-dimensional elements constituted by repeatable longitudinal elements (timber beams) connected through an element capable to spread the load on the transverse direction (concrete slab).
Sandra Monteiro   +2 more
doaj   +1 more source

Rapid Inspection of Large Concrete Floor Flatness Using Wheeled Robot with Aided-INS

open access: yesRemote Sensing, 2022
Flatness is an important parameter for the quality assessment of concrete floors. Traditional flatness inspection methods have problems with sparse sampling and low efficiency for large concrete floors.
Zhipeng Chen   +6 more
doaj   +1 more source

Vertical dispersal of Aedes albopictus within multi-story buildings in downtown Shanghai, China

open access: yesParasites & Vectors, 2023
Background Shanghai has numerous high-rise apartment and office buildings, but the effects of these high-rise spaces on the vertical dispersal, oviposition and blood feeding behavior of Aedes albopictus are unknown.
Shuqing Jin   +5 more
doaj   +1 more source

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