Circannual cycles in golden-mantled ground squirrels: phase shift produced by low temperatures

1980 ◽  
Vol 136 (4) ◽  
pp. 349-353 ◽  
Author(s):  
N. Mrosovsky
Keyword(s):  
Phase Shift ◽  
Low Temperatures ◽  
Ground Squirrels ◽  
Circannual Cycles

Accelerated circannual cycles in ground squirrels, Spermophilus richardsonii, kept in constant conditions

1983 ◽  
Vol 61 (8) ◽  
pp. 1765-1770 ◽  
Author(s):  
Roman B. Melnyk
Keyword(s):  
Body Weight ◽  
Weight Gain ◽  
Food Intake ◽  
Ground Squirrels ◽  
Food Utilization ◽  
Metabolic Processes ◽  
Reproductive Condition ◽  
Spermophilus Richardsonii ◽  
Upper Limit ◽  
Circannual Cycles

Six- to 8-month cycles of food intake, body weight, moult and reproductive condition in captive Richardson's ground squirrels (Spermophilus richardsonii) kept in 12 h light: 12 h dark and 23 ± 3 °C for over a year are described. A decrease in efficiency of food utilization towards the end of the weight gain period may be associated with metabolic processes which determine an upper limit for body weight. The advantages of this species as a model for the study of spontaneous obesity are discussed.

Meal patterns and food intakes of ground squirrels during circannual cycles

Appetite ◽  
1986 ◽  
Vol 7 (2) ◽  
pp. 163-175 ◽  
Author(s):  
N. Mrosovsky ◽  
Michael Boshes
Keyword(s):  
Ground Squirrels ◽  
Meal Patterns ◽  
Circannual Cycles

scholarly journals INTRINSIC PHASE-DECOHERENCE OF ELECTRONS BY TWO-LEVEL SYSTEMS

2002 ◽  
Vol 16 (14) ◽  
pp. 511-517 ◽  
Author(s):  
VIPIN SRIVASTAVA ◽  
RAISHMA KRISHNAN
Keyword(s):  
Phase Shift ◽  
Inelastic Scattering ◽  
Low Temperatures ◽  
Fundamental Problem ◽  
Scattering Rate ◽  
Phase Saturation ◽  
Long Range Interactions ◽  
Two Level Systems ◽  
Phase Decoherence ◽  
Dynamic Components

The fundamental problem of the phase saturation of electrons in a disordered mesoscopic system at very low temperatures is addressed. The disorder in the medium has both static and dynamic components, the latter being in the form of two-level systems (TLSs) which become just about the only source of inelastic scattering in the limit T → 0. We propose that besides the inelastic nature of scattering from the TLSs, the phase shift of the electrons is also affected by the nature of tunneling in the TLSs. The tunneling becomes incoherent as T decreases due to increasing long-range interactions among the TLSs which affects the phase coherence of electrons scattering from them. The competition between this effect, which increases as ~ T-1, and that of the scattering rate [Formula: see text] behaving as ~ T apparently govern the phase shift of the electrons.

Phase shift cavity ring down at low temperatures: Vibration–rotation overtone absorption of H–D (Δv= 4) at 297 and 105 K

2006 ◽  
Vol 418 (4-6) ◽  
pp. 576-580 ◽  
Author(s):  
Craig J. Moehnke ◽  
Ernest K. Lewis ◽  
Alfredo Lopez-Calvo ◽  
Carlos E. Manzanares
Keyword(s):  
Phase Shift ◽  
Low Temperatures ◽  
Vibration Rotation ◽  
Cavity Ring Down

scholarly journals Pulmonary Surfactant Membranes of Hibernating Ground Squirrels Possess Increased Fluidity but are Capable of Maintaining an Ordered Membrane Structure at Low Temperatures

2011 ◽  
Vol 100 (3) ◽  
pp. 628a
Author(s):  
Lakshmi N.M. Suri ◽  
Lynda McCaig ◽  
Victoria Picardi ◽  
Ruud Veldhuizen ◽  
James Staples ◽  
...  
Keyword(s):  
Low Temperatures ◽  
Pulmonary Surfactant ◽  
Membrane Structure ◽  
Ground Squirrels
Sign in / Sign up

Export Citation Format

Share Document