Results 21 to 30 of about 6,312,933 (292)

Generalized Oberst beam method for measuring viscoelastic parameters of layered composite components

open access: yesArchives of Mechanics, 2023
This paper proposes two new methods of measuring the viscoelastic parameters of materials. The methods are based on the composite beams' resonant frequencies measurement. The Young moduli and loss factors of the components are determined by measuring the
A. Dobrucki   +3 more
doaj   +1 more source

FACTORS ASSOCIATED WITH ELECTRICITY LOSSES IN COLOMBIA

open access: yesInternational Journal of Energy Economics and Policy, 2021
Le but de cette recherche est d'exploiter les facteurs associés à la transmission et à la distribution des pertes d'électricité en Colombie. A literature review is carried out to find out the variables that have been significatives in past studies.
Hugo Briseño   +3 more
openaire   +3 more sources

Performance degradation due to multipath noise for narrowband OFDM systems: channel-based analysis and experimental determination [PDF]

open access: yes, 2015
The performance of OFDM systems over a multipath channel can strongly degrade due to the propagation delay spread. The distortion of the received signal over the fast Fourier transform window is referred to as multipath noise.
Heereman, Frédéric   +4 more
core   +2 more sources

Perinatal Loss: Socioeconomic Factors [PDF]

open access: yesJOGN Nursing, 1977
The author concludes that advances in the technology of medical care to women in their reproductive years have outstripped the progress toward elimination of factors which place mothers at social risk. Maternal and child health professionals must become actively involved in the development of legislation and policies which address the relationship ...
openaire   +3 more sources

Dielectric properties of hops - an effect of bulk density

open access: yesResearch in Agricultural Engineering, 2017
Continuous detection of basic physical properties of freshly picked and cleaned wet hop cones would be very helpful for better control and automation of harvesting processes.
Jakub Lev, František Kumhála
doaj   +1 more source

Properties of self-adhesive polyborosiloxane composite

open access: yesJournal of Aeronautical Materials, 2023
Polyborosiloxane(PBS) is a supramolecular material, the material itself has a physical cross-linked network structure, and has the characteristics of high and low temperature resistance, weather resistance, electrical insulation and self-healing. However,
SHANG Xujing   +5 more
doaj   +1 more source

The Impact of Hot Jupiters on the Spin-down of their Host Stars [PDF]

open access: yes, 2010
We present a numerical Magnetohydrodynamic (MHD) study of the dependence of stellar mass and angular momentum- loss rates on the orbital distance to close-in giant planets.
Cohen   +11 more
core   +1 more source

Traffic capacity improvement factor when VAMOS technique is applied [PDF]

open access: yesTehnika, 2021
New modern technologies in mobile telephony overcome the possibilities of GSM systems. VAMOS technique is one way to improve traffic properties of traditional GSM systems.
Matić Vladimir S.   +4 more
doaj   +1 more source

Constraints on decreases in Eta Carinae's mass loss from 3D hydrodynamic simulations of its binary colliding winds [PDF]

open access: yes, 2013
Recent work suggests that the mass-loss rate of the primary star (Eta A) in the massive colliding wind binary Eta Carinae dropped by a factor of 2-3 between 1999 and 2010. We present results from large- (r=1545au) and small- (r=155au) domain, 3D smoothed
Corcoran, Michael F.   +8 more
core   +3 more sources

Delineating the psychological and behavioural factors of successful weight loss maintenance [PDF]

open access: yes, 2020
Overweight and obesity present alarming global health problems including detrimental health risks that call for effective interventions. Considerable research has examined behavioural and psychological factors associated with weight loss to advance the ...
Levinge, Emily   +2 more
core   +1 more source

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