scholarly journals Corrective action strategy for single-shell tanks containing organic chemicals

1993 ◽  
Author(s):  
D.A. Turner
Keyword(s):  
Corrective Action ◽  
Organic Chemicals ◽  
Action Strategy ◽  
Single Shell

Asteroid and Comet Impact Speeds upon Mars: Significance for Panspermia and the Supply of Organics

1997 ◽  
Vol 161 ◽  
pp. 197-201 ◽  
Author(s):  
Duncan Steel
Keyword(s):  
Probability Distributions ◽  
Regions Of Interest ◽  
Significant Fraction ◽  
Organic Chemicals ◽  
Impact Speed ◽  
The Mean ◽  
The Impact

AbstractWhilst lithopanspermia depends upon massive impacts occurring at a speed above some limit, the intact delivery of organic chemicals or other volatiles to a planet requires the impact speed to be below some other limit such that a significant fraction of that material escapes destruction. Thus the two opposite ends of the impact speed distributions are the regions of interest in the bioastronomical context, whereas much modelling work on impacts delivers, or makes use of, only the mean speed. Here the probability distributions of impact speeds upon Mars are calculated for (i) the orbital distribution of known asteroids; and (ii) the expected distribution of near-parabolic cometary orbits. It is found that cometary impacts are far more likely to eject rocks from Mars (over 99 percent of the cometary impacts are at speeds above 20 km/sec, but at most 5 percent of the asteroidal impacts); paradoxically, the objects impacting at speeds low enough to make organic/volatile survival possible (the asteroids) are those which are depleted in such species.

Konflik Kekerasan, Otonomi Daerah dan Integrasi Nasional

2010 ◽  
Vol 8 (5) ◽  
pp. 35-42
Author(s):  
Kusnanto Anggoro
Keyword(s):  
Early Warning ◽  
Social Economic ◽  
Corrective Action ◽  
Demographic Changes ◽  
Local Autonomy ◽  
Foreseeable Future ◽  
National Integration ◽  
Pattern Change ◽  
The Social ◽  
Cultural Tensions

In a decade of reform, several changes had been occurred. Some adjustments could be considered as a success, while others potentially could trigger conflicts. Historical conflict remnants in Indonesia were hard to restrain. Hence, national integration remains crucial in the foreseeable future. Local autonomy could be an avenue to resolve the problem of national integration in a particular context. However, local autonomy could result in the reverse end. In the midst of conflict pattern change and development over the last decade, bureaucracy (local and national) has to be able to foresee any sign of conflict (early warning) in order to be able to anticipate. Conflict recognition could be observed through various indications, ranging from demographic changes, deterioration of the social-economic situation, and/or cultural tensions. Failure to do corrective action on such deviation would lead to a greater risk of conflict occurrence.

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