Results 81 to 90 of about 4,345,907 (196)

Study on voltage characteristics of short air arc with high current density arc root

open access: yesAIP Advances, 2019
In this paper, the voltage characteristics of short air arc with high average current density arc root were studied at atmospheric pressure. Cu-W electrodes with diameter of 5-14mm and gap length of 0.2-3 mm were used in the experimental study.
Tiansheng Zhu   +4 more
doaj   +1 more source

Kohn-Sham calculations combined with an average pair-density functional theory

open access: yes, 2006
A recently developed formalism in which Kohn-Sham calculations are combined with an ``average pair density functional theory'' is reviewed, and some new properties of the effective electron-electron interaction entering in this formalism are derived.
A. SAVIN   +5 more
core   +1 more source

Spectrum sensing algorithm based on average value of middle part of power spectral density

open access: yesDianxin kexue, 2016
The difference between maximum and minimum value of the received signal power spectrum is distinct when the primary user signal is present or absent.Using this characteristic,the spectrum sensing algorithm based on the average of the middle part of power
Zhijin ZHAO, Xi LV, Shilian ZHENG
doaj   +2 more sources

Consideration of influence of the thickness of the hydration shell of solid particles in the gravitational enrichment methods [PDF]

open access: yes, 2013
В статті наведені результати впливу товщини гідратної оболонки на середню густину комплексу частинка – оболонка, а також показано зменшення різниці середніх густин комплексів при зменшенні розмірів частинок мінералів.В статье приведены результаты влияния
Berezniak, Oleksandr   +3 more
core  

BACKONE equation of state for Cis-1, 3, 3, 3-tetrafluoropropene (R1234ze(Z))

open access: yesVietnam Journal of Mechanics, 2018
This paper presents the study on the determination of the thermodynamic properties of Cis-1,3,3,3-tetrafluoropropene (R1234ze(Z)) with the BACKONE equation of state.
Phan Thi Thu Huong, Lai Ngoc Anh
doaj   +1 more source

Assessment of Density Variations of Marine Sediments with Ocean and Sediment Depths

open access: yesThe Scientific World Journal, 2014
We analyze the density distribution of marine sediments using density samples taken from 716 drill sites of the Deep Sea Drilling Project (DSDP). The samples taken within the upper stratigraphic layer exhibit a prevailing trend of the decreasing density ...
R. Tenzer, V. Gladkikh
doaj   +1 more source

Microwave radiation measurements near the electron plasma frequency of the NASA Lewis bumpy torus plasma [PDF]

open access: yes
Microwave emission near the electron plasma frequency was observed, and its relation to the average electron density and the dc toroidal magnetic field was examined.
Mallavarpu, R., Roth, J. R.
core   +1 more source

Average densities and linear rectifiability of measures [PDF]

open access: yesMathematika, 1997
We show that a measure in a Euclidean space is linearly rectifiable if and only if the lower 1-density is positive and finite and agrees with the lower average 1-density almost everywhere.
openaire   +2 more sources

Evidence for a Low Bulk Crustal Density for Mars from Gravity and Topography [PDF]

open access: yes
Knowledge of the average density of the crust of a planet is important in determining its interior structure. The combination of high-resolution gravity and topography data has yielded a low density for the Moons crust, yet for other terrestrial planets ...
Genova, Antonio   +4 more
core   +1 more source

CONSIDERATIONS ON COMMON PRACTICAL APPLICATIONS OF NORMAL DISTRIBUTION [PDF]

open access: yesAnnals of the University of Petrosani: Economics
In the case of a large number of practical considerations, such as those related to the distribution coefficient of the population’s intelligence, the ratio between motivation and performance, but also the distribution of the average of an exam in the ...
CĂTĂLIN ILIE MITRAN
doaj  

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