General Collision Theory

1992 ◽  
pp. 83-95
Author(s):  
Rudolf Haag
Keyword(s):  
Collision Theory

PLATELET AGGREGATION DOES NOT CONFORM TO SIMPLE PARTICLE COLLISION THEORY

1987 ◽  
Author(s):  
Moideen P Jamaluddin
Keyword(s):  
Platelet Aggregation ◽  
Rate Equation ◽  
Rate Constants ◽  
Kinetic Scheme ◽  
Order Type ◽  
Second Order ◽  
Particle Collision ◽  
Collision Theory ◽  
Rate Law ◽  
First Order

Platelet aggregation kinetics, according to the particle collision theory, generally assumed to apply, ought to conform to a second order type of rate law. But published data on the time-course of ADP-induced single platelet recruitment into aggregates were found not to do so and to lead to abnormal second order rate constants much larger than even their theoretical upper bounds. The data were, instead, found to fit a first order type of rate law rather well with rate constants in the range of 0.04 - 0.27 s-1. These results were confirmed in our laboratory employing gelfiltered calf platelets. Thus a mechanism much more complex than hithertofore recognized, is operative. The following kinetic scheme was formulated on the basis of information gleaned from the literature.where P is the nonaggregable, discoid platelet, A the agonist, P* an aggregable platelet form with membranous protrusions, and P** another aggregable platelet form with pseudopods. Taking into account the relative magnitudes of the k*s and assuming aggregation to be driven by hydrophobic interaction between complementary surfaces of P* and P** species, a rate equation was derived for aggregation. The kinetic scheme and the rate equation could account for the apparent first order rate law and other empirical observations in the literature.

Collisional activation of large ions. Energy losses and an impulsive collision theory of energy transfer

1994 ◽  
Vol 90 (2) ◽  
pp. 239 ◽  
Author(s):  
Caroline D. Bradley ◽  
Jonathan M. Curtis ◽  
Peter J. Derrick ◽  
Margaret M. Sheil
Keyword(s):  
Energy Transfer ◽  
Collisional Activation ◽  
Energy Losses ◽  
Collision Theory

scholarly journals Atomic collision theory

Nature ◽  
1977 ◽  
Vol 269 (5630) ◽  
pp. 732-732 ◽  
Author(s):  
B. H. Bransden
Keyword(s):  
Collision Theory ◽  
Atomic Collision

Collision theory of Rydberg atoms with neutral and charged particles

1995 ◽  
Vol 250 (3-5) ◽  
pp. 95-328 ◽  
Author(s):  
I.L Beigman ◽  
V.S Lebedev
Keyword(s):  
Rydberg Atoms ◽  
Charged Particles ◽  
Collision Theory

scholarly journals Development of Mathematical Model to Study the Variation Temperature due to the Collision of

2021 ◽  
Vol 3 (3) ◽  
pp. 1-5
Author(s):  
Saddam Husain Dhobi ◽  
Arjun Panthi ◽  
Subash Panthi ◽  
Roshan Subedi
Keyword(s):  
Mathematical Model ◽  
Temperature Increase ◽  
Initial Velocity ◽  
Collision Theory ◽  
New Equation

To study the variation of temperature with the collision of the air molecules, with aircraft the authors consider the random velocities of the air molecules or aerosol and aircraft. After this, the authors start to develop and extend the old relation of gases, collision, velocities, and temperature. On combining, the authors derived a new equation and relation among these parameters. The derivation for this work assumes some suitable and considerable, assumptions based on collision theory. The relation shows, on collision between the aircraft and air molecules the velocity of the aircraft does not change while the velocity of the air molecules goes on change, which is our goal.  The change in velocity of gases is used to develop and study the variation of temperature of the atmosphere, the variation of temperature takes place because the speed of aircraft and air molecules are exchangeable in some cases. Therefore, two relations are developed (24) and (25), finally, which depend upon the initial velocities of aircraft and air molecules. On considering the case for initial velocities of aircraft is greater than initial velocities of air molecules, after the collision, the velocities of gases go on the increase, and hence the temperature increase and vice-versa in case of initial velocities of aircraft is less than the initial velocity of air molecules.

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