Time Dependence of Mechanical Breakdown in Bundles of Fibers. V. Fibers of Class A‐2

1959 ◽  
Vol 30 (5) ◽  
pp. 720-724 ◽  
Author(s):  
Bernard D. Coleman
Keyword(s):  
Time Dependence ◽  
Class A ◽  
Mechanical Breakdown

Time Dependence of Mechanical Breakdown Phenomena

1956 ◽  
Vol 27 (8) ◽  
pp. 862-866 ◽  
Author(s):  
Bernard D. Coleman
Keyword(s):  
Time Dependence ◽  
Mechanical Breakdown

scholarly journals BINARY: an optical freezing array for assessing temperature and time dependence of heterogeneous ice nucleation

2014 ◽  
Vol 7 (9) ◽  
pp. 9137-9172 ◽  
Author(s):  
C. Budke ◽  
T. Koop
Keyword(s):  
Time Dependence ◽  
Ice Nucleation ◽  
Strong Increase ◽  
Cooling Rates ◽  
Class A ◽  
Vapor Transfer ◽  
Ice Nucleators ◽  
Type Water ◽  
Optical Brightness ◽  
Heterogeneous Ice Nucleation

Abstract. A new optical freezing array for the study of heterogeneous ice nucleation in microliter-sized droplets is introduced, tested and applied to the study of immersion freezing in aqueous Snomax® suspensions. In the Bielefeld Ice Nucleation ARraY (BINARY) ice nucleation can be studied simultaneously in 36 droplets at temperatures down to −40 °C (233 K) and at cooling rates between 0.1 K min−1 and 10 K min−1. The droplets are separated from each other in individual compartments, thus preventing a Wegener–Bergeron–Findeisen type water vapor transfer between droplets as well as avoiding the seeding of neighboring droplets by formation and surface growth of frost halos. Analysis of freezing and melting occurs via an automated real time image analysis of the optical brightness of each individual droplet. As an application ice nucleation in water droplets containing Snomax® at concentrations from 1 ng mL−1 to 1 mg mL−1 was investigated. Using different cooling rates a minute time dependence of ice nucleation induced by Class A and Class C ice nucleators contained in Snomax® was detected. For the Class A IN a very strong increase of the heterogeneous ice nucleation rate coefficient with decreasing temperature of λ ≡ −dln(jhet)/dT = 8.7 K−1 was observed emphasizing the capability of the BINARY device. This value is larger than those of other types of IN reported in the literature, suggesting that the BINARY setup is suitable for quantifying time dependence for most other IN of atmospheric interest, making it a useful tool for future investigations.

Errata: Time Dependence of Mechanical Breakdown Phenomena

1957 ◽  
Vol 28 (12) ◽  
pp. 1514-1514 ◽  
Author(s):  
Bernard D. Coleman
Keyword(s):  
Time Dependence ◽  
Mechanical Breakdown

The O–C diagrams of minor planets − a new approach to modelling the rotation

1999 ◽  
Vol 173 ◽  
pp. 185-188
Author(s):  
Gy. Szabó ◽  
K. Sárneczky ◽  
L.L. Kiss
Keyword(s):  
Error Analysis ◽  
Time Dependence ◽  
Theoretical Work ◽  
Minor Planet ◽  
Minor Planets ◽  
New Approach ◽  
Preliminary Results ◽  
Ccd Observations

AbstractA widely used tool in studying quasi-monoperiodic processes is the O–C diagram. This paper deals with the application of this diagram in minor planet studies. The main difference between our approach and the classical O–C diagram is that we transform the epoch (=time) dependence into the geocentric longitude domain. We outline a rotation modelling using this modified O–C and illustrate the abilities with detailed error analysis. The primary assumption, that the monotonity and the shape of this diagram is (almost) independent of the geometry of the asteroids is discussed and tested. The monotonity enables an unambiguous distinction between the prograde and retrograde rotation, thus the four-fold (or in some cases the two-fold) ambiguities can be avoided. This turned out to be the main advantage of the O–C examination. As an extension to the theoretical work, we present some preliminary results on 1727 Mette based on new CCD observations.

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