Evaluation of Petroleum Resources from Pool Size Distributions

1986 ◽  
Author(s):  
P. J. Lee ◽  
P. C. C. Wang
Keyword(s):  
Pool Size ◽  
Size Distributions ◽  
Petroleum Resources ◽  
Evaluation Of Petroleum Resources

Concluding Remarks

2008 ◽  
Author(s):  
P.J. Lee
Keyword(s):  
Statistical Models ◽  
Finite Population ◽  
Pool Size ◽  
Process Models ◽  
Discovery Process ◽  
Feedback Mechanisms ◽  
Petroleum Resource ◽  
Petroleum Resources ◽  
Discovery Process Models ◽  
Interactive Loop

The procedure and steps of petroleum resource assessment involve a learning process that is characterized by an interactive loop between geological and statistical models and their feedback mechanisms. Geological models represent natural populations and are the basic units for petroleum resource evaluation. Statistical models include the superpopulation, finite population, and discovery process models that may be used for estimating the distributions for pool size and number of pools, and can be estimated from somewhat biased exploration data. Methods for assessing petroleum resources have been developed using different geological perspectives. Each of them can be applied to a specific case. When we consider using a particular method, the following aspects should be examined: • Types of data required—Some methods can only incorporate certain types of data; others can incorporate all data that are available. • Assumptions required—We must study what specific assumptions should be made and what role they play in the process of estimation. • Types of estimates—What types of estimates does the method provide (aggregate estimates vs. pool-size estimates)? Do the types of estimates fulfill our needs for economic analysis? • Feedback mechanisms—What types of feedback mechanism does the method offer? PETRIMES is based on a probabilistic framework that uses superpopulation and finite population concepts, discovery process models, and the optional use of lognormal distributions. The reasoning behind the application of discovery process models is that they offer the only known way to incorporate petroleum assessment fundamentals (i.e., realism) into the estimates. PETRIMES requires an exploration time series as basic input and can be applied to both mature and frontier petroleum resource evaluations.

Trends in dental hygiene applicant pool size and characteristics of students upon entry over three decades

1990 ◽  
Vol 54 (10) ◽  
pp. 602-608
Author(s):  
MM Walsh ◽  
H Ishida
Keyword(s):  
Dental Hygiene ◽  
Pool Size ◽  
Applicant Pool

Fractal Size Distributions of Wildfires in Hierarchical Landscapes: Natura Facit Saltus?

2003 ◽  
Vol 8 (1) ◽  
pp. 93-101 ◽  
Author(s):  
Carlo Ricotta
Keyword(s):  
Size Distributions ◽  
Fractal Size

Research Recommendations for Applying Vitamin A-Labelled Isotope Dilution Techniques to Improve Human Vitamin A Nutrition

2014 ◽  
Vol 84 (Supplement 1) ◽  
pp. 52-59 ◽  
Author(s):  
Sherry A. Tanumihardjo ◽  
Anura V. Kurpad ◽  
Janet R. Hunt
Keyword(s):  
Public Health ◽  
Vitamin A ◽  
Vitamin A Deficiency ◽  
Human Subjects ◽  
The Body ◽  
Pool Size ◽  
Serum Retinol ◽  
Vitamin A Status ◽  
Status Assessment ◽  
Total Body

The current use of serum retinol concentrations as a measurement of subclinical vitamin A deficiency is unsatisfactory for many reasons. The best technique available for vitamin A status assessment in humans is the measurement of total body pool size. Pool size is measured by the administration of retinol labelled with stable isotopes of carbon or hydrogen that are safe for human subjects, with subsequent measurement of the dilution of the labelled retinol within the body pool. However, the isotope techniques are time-consuming, technically challenging, and relatively expensive. There is also a need to assess different types of tracers and doses, and to establish clear guidelines for the use and interpretation of this method in different populations. Field-friendly improvements are desirable to encourage the application of this technique in developing countries where the need is greatest for monitoring the risk of vitamin A deficiency, the effectiveness of public health interventions, and the potential of hypervitaminosis due to combined supplement and fortification programs. These techniques should be applied to validate other less technical methods of assessing vitamin A deficiency. Another area of public health relevance for this technique is to understand the bioconversion of β-carotene to vitamin A, and its relation to existing vitamin A status, for future dietary diversification programs.

Pyridine nucleotide pool size changes in iron-deficient Plantago lanceolata roots during reduction of external oxidants

1996 ◽  
Vol 98 (1) ◽  
pp. 215-221 ◽  
Author(s):  
Wolfgang Schmidt ◽  
Christian Schuck
Keyword(s):  
Plantago Lanceolata ◽  
Pyridine Nucleotide ◽  
Pool Size ◽  
Iron Deficient

33. Comparison of Particle Size Distributions from Six Types of Aerosol Samplers

2005 ◽  
Author(s):  
J. Park ◽  
J. Rock ◽  
C. Parnell
Keyword(s):  
Particle Size ◽  
Size Distributions ◽  
Particle Size Distributions
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