Threshold density

2018 ◽  
pp. 127-158
Keyword(s):  
Threshold Density

EVALUATING THE THRESHOLD DENSITY HYPOTHESIS FOR MOOSE (ALCES ALCES), WHITE-TAILED DEER (ODOCOILEUS VIRGINIANUS), AND PARELAPHOSTRONGYLUS TENUIS

2021 ◽  
Vol 57 (3) ◽  
Author(s):  
Amanda M. McGraw ◽  
Ron A. Moen ◽  
Louis Cornicelli ◽  
Michelle Carstensen ◽  
Véronique St-Louis
Keyword(s):  
Odocoileus Virginianus ◽  
Alces Alces ◽  
Threshold Density ◽  
Parelaphostrongylus Tenuis

The epidemiology of canine visceral leishmaniasis in southern France: classical theory offers another explanation of the data

Parasitology ◽  
1988 ◽  
Vol 96 (1) ◽  
pp. 19-24 ◽  
Author(s):  
Christopher Dye
Keyword(s):  
Visceral Leishmaniasis ◽  
Classical Theory ◽  
Compartmental Model ◽  
Empirical Models ◽  
Canine Visceral Leishmaniasis ◽  
Threshold Density ◽  
Unknown Quantity ◽  
Southern France ◽  
New Model

SUMMARYThis paper describes a compartmental model incorporating biological details of the transmission of canine visceral leishmaniasis in southern France. In contrast to earlier, empirical models (Jolivet, 1977; Rioux, Croset & Lanotte, 1977) the new model (1) predicts a threshold density of sandflies below which transmission cannot be sustained, (2) suggests that, until better data become available, the maximum prevalence of infection obtained at high sandfly density should be considered an unknown quantity.

Low gain threshold density of a single InGaP quantum well sandwiched by digital alloy

2014 ◽  
Vol 14 (9) ◽  
pp. 1293-1295 ◽  
Author(s):  
B. Kim ◽  
K. Kyhm ◽  
K.C. Je ◽  
J.D. Song ◽  
S.Y. Kim ◽  
...  
Keyword(s):  
Quantum Well ◽  
Threshold Density ◽  
Digital Alloy ◽  
Gain Threshold

scholarly journals Cooling of White Dwarfs with Account of Non-Equilibrium Beta-Processes

1989 ◽  
Vol 114 ◽  
pp. 269-272
Author(s):  
G.S. Bisnovatyi-Kogan
Keyword(s):  
White Dwarf ◽  
White Dwarfs ◽  
Central Density ◽  
Mass Limit ◽  
Threshold Density ◽  
Finite Density ◽  
Coulomb Crystal ◽  
New Phase ◽  
Non Equilibrium

Non-equilibrium heating of white dwarfs during two-step neutronization and formation of small but finite core of the new phase is a main source of energy in these stars when the temperature is sufficiently small and Coulomb crystal becomes degenerate.Existence of Chandrasekhar mass limit of white dwarfs Mch = 5.83 /μ2z, μz = A/z, is connected with the prevalence of the relativistic degenerate electrons in pressure. When neutronization is taken into account, the maximal value of mass is smaller and is reached at finite density (Schatzman, 1958). The central density of the white dwarf with limiting mass is larger than threshold density of neutronization. Such star has a small, but finite core of new phase (Seidov, 1967). The neutronization threshold for the iron is equal to ρ = 1.15 109 g/cm3 The neutronization goes through two steps

scholarly journals When Is Pin Cherry (Prunus pensylvanica L.) a Problem in Allegheny Hardwoods?

2006 ◽  
Vol 23 (3) ◽  
pp. 204-210 ◽  
Author(s):  
Todd E. Ristau ◽  
Stephen B. Horsley
Keyword(s):  
Decision Support ◽  
Prunus Serotina ◽  
Critical Threshold ◽  
Stand Development ◽  
Black Cherry ◽  
Threshold Density ◽  
Negative Effects ◽  
Decision Support Framework ◽  
Different Levels

Abstract Pin cherry (Prunus pensylvanica L.) has important effects on early stand development when it occurs at high densities. We used data describing the first 15 years of stand development in eight clearcuts and used plots that had at least 25 black cherry or 100 desirable seedlings at age 3, as well as different levels of pin cherry stocking. Our findings identified seven pin cherry >5 ft tall at age 3 on 6-ft-radius plots as the threshold for negative effects on stocking of seedling-origin trees of desirable species at age 15. We incorporated these finding into the regeneration followup chart used as part of the Silviculture of Allegheny Hardwoods (SILVAH) decision support framework. Of eight stands used in this study, four had a pin cherry interference problem, and four did not. By age 15, there were one-third as many desirable seedling-origin stems, mostly black cherry (Prunus serotina Ehrh.), in stands with pin cherry above the critical threshold density. We suggest some silvicultural options for addressing the problem.

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