Results 21 to 30 of about 4,580,482 (170)

An Investigation into Sub-Critical Choke Flow Performance in High Rate Gas Condensate Wells

open access: yesEnergies, 2019
There have been some correlations in the literature to predict the gas and liquid flow rate through wellhead chokes under subcritical flow conditions. The majority of these empirical correlations have been developed based on limited production data sets ...
Hamid Reza Nasriani   +6 more
doaj   +1 more source

Improving the efficiency of using multivalued logic tools

open access: yesScientific Reports, 2023
Multivalued logics are becoming one of the most important tools of information technology. They are in great demand for creation of artificial intelligence systems that are close to human intelligence, since the functioning of the latter cannot be ...
Ibragim E. Suleimenov   +3 more
doaj   +1 more source

Estimating neuronal connectivity from axonal and dendritic density fields

open access: yesFrontiers in Computational Neuroscience, 2013
Neurons innervate space by extending axonal and dendritic arborizations. When axons and dendrites come in close proximity of each other, synapses between neurons can be formed.
Jaap evan Pelt, Arjen evan Ooyen
doaj   +1 more source

Decidability Problems for Actor Systems [PDF]

open access: yesLogical Methods in Computer Science, 2014
We introduce a nominal actor-based language and study its expressive power. We have identified the presence/absence of fields as a crucial feature: the dynamic creation of names in combination with fields gives rise to Turing completeness.
Frank De Boer   +3 more
doaj   +1 more source

Delayed consequences of extremely low frequency magnetic fields and the influence of adverse environmental conditions on roach Rutilus rutilus L. embryos

open access: yesFrontiers in Marine Science, 2015
It is widely known that animals are most sensitive to the influence of different environmental stressors, including magnetic fields, during the embryonic period.
Viacheslav V. Krylov
doaj   +1 more source

Higher Spins in Hyperspace [PDF]

open access: yes, 2014
We consider the Sp(2n) invariant formulation of higher spin fields on flat and curved backgrounds of constant curvature.In this formulation an infinite number of higher spin fields are packed into single scalar and spinor master fields (hyperfields ...
Florakis, Ioannis   +2 more
core   +3 more sources

Analysis of methods for project prioritization in field of program management [PDF]

open access: yesTehnika, 2023
Project prioritization is a major challenge which many companies from different inudustries are facing. There is a large number of methods that can be used for this purpose, however, it has been shown that DEA and AHP methods are some of the most ...
Petrović Katarina D.
doaj   +1 more source

The weight and density of carbon nanotubes versus the number of walls and diameter [PDF]

open access: yes, 2010
The weight and density of carbon nanotubes are calculated as a function of their characteristics (inner diameter, outer diameter, and number of walls).
Flahaut, Emmanuel   +2 more
core   +2 more sources

Roadsides and neighboring field edges harbor different weed compositions

open access: yesFrontiers in Agronomy, 2022
Roadsides are vectors of spread for invasive and other non-native plants. Therefore, fields located along roadsides could harbour more weeds and less native species compared to more isolated fields. To determine if field edges that are close to roadsides
Marie-Josée Simard, Lydia Maheux
doaj   +1 more source

Quantum inequalities for the free Rarita-Schwinger fields in flat spacetime

open access: yes, 2003
Using the methods developed by Fewster and colleagues, we derive a quantum inequality for the free massive spin-${3\over 2}$ Rarita-Schwinger fields in the four dimensional Minkowski spacetime. Our quantum inequality bound for the Rarita-Schwinger fields
A. Everett   +35 more
core   +1 more source

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