A note on fractional dimension analysis of constant rate interference tests

1994 ◽  
Vol 30 (7) ◽  
pp. 2339-2341 ◽  
Author(s):  
Chayan Chakrabarty
Keyword(s):  
Fractional Dimension ◽  
Dimension Analysis ◽  
Constant Rate ◽  
Interference Tests

FRACTIONAL DIMENSIONALITY ON SELF-TRAPPED FRENKEL EXCITONS IN MOLECULAR CRYSTALLITES

2000 ◽  
Vol 14 (11) ◽  
pp. 1209-1224
Author(s):  
MASUMI TAKESHIMA ◽  
ATSUO H. MATSUI
Keyword(s):  
Tight Binding ◽  
The Self ◽  
Molecular Chain ◽  
Fractional Dimension ◽  
High Threshold ◽  
Dimension Analysis ◽  
Self Trapping ◽  
Frenkel Excitons ◽  
2D And 3D

Self-trapped exciton characteristics in microcrystallites are discussed in terms of the fractional dimension. The concept of the fractional dimension is introduced since microcrystallites are formed with various side lengths where the concept of the integral dimensions (1D, 2D and 3D) are not significant. The theory is based on the tight-binding approach. Uniqueness in self-trapping appears in the magnitude of the fractional dimension. Exceptionally high threshold for self-trapping is found when (1) a thin crystallite is made of two layers, or (2) a crystallite is formed by two molecular chains, or (3) a linear molecular chain is made of four molecules. The fractional dimension analysis thus offers a wider overview of the self-trapped exciton character than the analysis that can be done using intergral dimensions only.

Fractional dimension analysis of self-trapped Frenkel excitons in molecular microcrystallites

2000 ◽  
Vol 87-89 ◽  
pp. 263-265
Author(s):  
Masumi Takeshima ◽  
Ken-ichi Mizuno ◽  
Atsuo H Matsui
Keyword(s):  
Fractional Dimension ◽  
Dimension Analysis ◽  
Frenkel Excitons

Constant-Rate Feed Device. A Reply to Comment

1950 ◽  
Vol 22 (7) ◽  
pp. 956-956 ◽  
Author(s):  
Lester Lundsted
Keyword(s):  
Constant Rate ◽  
Feed Device

Counterregulation of insulin-induced hypoglycaemia in primary hypothyroidism

1986 ◽  
Vol 111 (4) ◽  
pp. 516-521
Author(s):  
Nina Clausen ◽  
Per-Eric Lins ◽  
Ulf Adamson ◽  
Bertil Hamberger ◽  
Suad Efendić
Keyword(s):  
Growth Hormone ◽  
Insulin Infusion ◽  
Primary Hypothyroidism ◽  
Constant Rate Infusion ◽  
Counterregulatory Hormones ◽  
Insulin Metabolism ◽  
Hormonal Responses ◽  
Glucose Levels ◽  
Constant Rate ◽  
Rate Infusion

Abstract. Hypothyroidism has been alleged to modulate insulin action and influence the secretion of growth hormone and catecholamines. We recently investigated the influence of hypothyroidism on glucose counterregulatory capacity and the hormonal responses to insulin-induced hypoglycaemia in 6 patients with primary hypothyroidism (age 32–52 years, TSH-values 66–200 mU/l). Hypoglycaemia was induced in the hypothyroid state and again when the subjects were euthyroid. After an overnight fast a constant rate infusion of insulin (2.4 U/h) was given for 4 h. Glucose was measured every 15 min and insulin, C-peptide, glucagon, epinephrine, norepinephrine, growth hormone and cortisol every 30 min for 5 h. During insulin infusion somewhat higher concentrations of the hormone were obtained in the hypothyroid state and simultaneously glucose levels were 0.5 mmol/l lower. As expected, basal norepinephrine levels were higher in hypothyroidism. However, no increase in circulating norepinephrine during hypoglycaemia was registered in the two experiments. The responses of counterregulatory hormones showed an enhanced response of cortisol, similar responses of growth hormone and epinephrine while the glucagon response was paradoxically impaired. Our findings suggest that hypothyroidism alters insulin metabolism, and that the glucagon response to hypoglycaemia is impaired in this condition.

Recent Studies of Tire Braking Performance

1973 ◽  
Vol 1 (2) ◽  
pp. 121-137 ◽  
Author(s):  
J. L. McCarty ◽  
T. J. W. Leland
Keyword(s):  
Steady State ◽  
Rapid Cycling ◽  
Single Cycle ◽  
Steering Angle ◽  
Slip Ratio ◽  
Factors Affecting ◽  
Braking Performance ◽  
Constant Rate

Abstract The results from recent studies of some factors affecting tire braking and cornering performance are presented together with a discussion of the possible application of these results to the design of aircraft braking systems. The first part of the paper is concerned with steady-state braking, that is, results from tests conducted at a constant slip ratio or steering angle or both. The second part deals with cyclic braking tests, both single cycle, where brakes are applied at a constant rate until wheel lockup is achieved, and rapid cycling of the brakes under control of a currently operational antiskid system.

CARPENTER GLASS SEALING 52

Alloy Digest ◽  
1993 ◽  
Vol 42 (10) ◽  
Keyword(s):  
Thermal Expansion ◽  
Physical Properties ◽  
Tensile Properties ◽  
Constant Rate

Abstract CARPENTER GLASS SEALING 52 alloy has a virtually constant rate of thermal expansion to 1050 F. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties. Filing Code: FE-101. Producer or source: Carpenter.

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