Static and statistical properties of hot rotating nuclei in a macroscopic temperature-dependent finite-range model

2005 ◽  
Vol 68 (9) ◽  
pp. 1525-1539 ◽  
Author(s):  
E. G. Ryabov ◽  
G. D. Adeev
Keyword(s):  
Statistical Properties ◽  
Finite Range ◽  
Temperature Dependent ◽  
Rotating Nuclei

scholarly journals Empirical Model With Excellent Statistical Properties for Describing Temperature-Dependent Developmental Rates of Insects and Mites

2017 ◽  
Vol 110 (3) ◽  
pp. 302-309 ◽  
Author(s):  
David A. Ratkowsky ◽  
Gadi V. P. Reddy
Keyword(s):  
Nonlinear Regression ◽  
Empirical Model ◽  
Minimum Variance ◽  
Statistical Properties ◽  
Parameter Estimates ◽  
Regression Equations ◽  
Temperature Dependent ◽  
Temperature Range ◽  
Least Squares Estimators ◽  
Development Rates

Abstract Previous empirical models for describing the temperature-dependent development rates for insects include the Briére, Lactin, Beta, and Ratkowsky models. Another nonlinear regression model, not previously considered in population entomology, is the Lobry–Rosso–Flandrois model, the shape of which is very close to that of the Ratkowsky model in the suboptimal temperature range, but which has the added advantage that all four of its parameters have biological meaning. A consequence of this is that initial parameter estimates, needed for solving the nonlinear regression equations, are very easy to obtain. In addition, the model has excellent statistical properties, with the estimators of the parameters being “close-to-linear,” which means that the least squares estimators are close to being unbiased, normally distributed, minimum variance estimators. The model describes the pooled development rates very well throughout the entire biokinetic temperature range and deserves to become the empirical model of general use in this area.

HELIUM ON NANOPATTERNED SURFACES AT FINITE TEMPERATURE

2010 ◽  
Vol 24 (25n26) ◽  
pp. 4915-4922
Author(s):  
E. S. HERNANDEZ ◽  
F. ANCILOTTO ◽  
M. BARRANCO ◽  
A. HERNANDO ◽  
M. PI
Keyword(s):  
Phase Diagram ◽  
Density Functional Theory ◽  
Alkali Metal ◽  
Density Functional ◽  
Finite Range ◽  
Temperature Dependent ◽  
Functional Theory ◽  
Infinite Array ◽  
Dependent Density

We investigate the wetting behavior of helium on nanostructured alkali metal surfaces, at temperatures below and slightly above the bulk superfluidity threshold. Starting from a determination of the phase diagram of helium on semiinfinite planar Cs up to 3 K, performed within finite–range, temperature–dependent density functional theory, we examine the modifications of the isotherms introduced by an infinite array of nanocavities. We compare the hysterectic loops of helium on nonwettable Cs surfaces and on wettable Na substrates in the same temperature range.

Temperature-dependent Hartree-Fock-Bogoliubov calculations in hot rotating nuclei

1986 ◽  
Vol 451 (1) ◽  
pp. 77-90 ◽  
Author(s):  
J.L. Egido ◽  
P. Ring ◽  
H.J. Mang
Keyword(s):  
Temperature Dependent ◽  
Hartree Fock ◽  
Rotating Nuclei

ISOVECTOR PAIRING EFFECT ON NUCLEAR MOMENT OF INERTIA AT FINITE TEMPERATURE IN N = Z EVEN–EVEN SYSTEMS

2011 ◽  
Vol 20 (09) ◽  
pp. 1947-1959 ◽  
Author(s):  
I. AMI ◽  
M. FELLAH ◽  
N. H. ALLAL ◽  
N. BENHAMOUDA ◽  
M. BELABBAS ◽  
...  
Keyword(s):  
Single Particle ◽  
Finite Temperature ◽  
Mean Field ◽  
Moment Of Inertia ◽  
Numerical Calculations ◽  
Nuclear Moment ◽  
Temperature Dependent ◽  
Moments Of Inertia ◽  
Pairing Effect ◽  
Rotating Nuclei

Expressions of temperature-dependent perpendicular (ℑ⊥) and parallel (ℑ‖) moments of inertia, including isovector pairing effects, have been established using the cranking method. They are derived from recently proposed temperature-dependent gap equations. The obtained expressions generalize the conventional finite-temperature BCS (FTBCS) ones. Numerical calculations have been carried out within the framework of the schematic Richardson model as well as for nuclei such as N = Z, using the single-particle energies and eigenstates of a deformed Woods–Saxon mean-field. ℑ⊥ and ℑ‖ have been studied as a function of the temperature. It has been shown that the isovector pairing effect on both the perpendicular and parallel moments of inertia is non-negligible at finite temperature. These correlations must thus be taking into account in studies of warm rotating nuclei in the N ≃ Z region.

(111) Monocrystalline Nickel Films

1972 ◽  
Vol 30 ◽  
pp. 512-513
Author(s):  
T.E. Pratt ◽  
R.W. Vook
Keyword(s):  
Film Thickness ◽  
Deposition Rate ◽  
Room Temperature ◽  
Narrow Range ◽  
High Vacuum ◽  
Residual Pressure ◽  
Temperature Dependent ◽  
Deposition Parameters ◽  
Transmission Electron ◽  
Substrate Temperatures

(111) oriented thin monocrystalline Ni films have been prepared by vacuum evaporation and examined by transmission electron microscopy and electron diffraction. In high vacuum, at room temperature, a layer of NaCl was first evaporated onto a freshly air-cleaved muscovite substrate clamped to a copper block with attached heater and thermocouple. Then, at various substrate temperatures, with other parameters held within a narrow range, Ni was evaporated from a tungsten filament. It had been shown previously that similar procedures would yield monocrystalline films of CU, Ag, and Au.For the films examined with respect to temperature dependent effects, typical deposition parameters were: Ni film thickness, 500-800 A; Ni deposition rate, 10 A/sec.; residual pressure, 10-6 torr; NaCl film thickness, 250 A; and NaCl deposition rate, 10 A/sec. Some additional evaporations involved higher deposition rates and lower film thicknesses.Monocrystalline films were obtained with substrate temperatures above 500° C. Below 450° C, the films were polycrystalline with a strong (111) preferred orientation.

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