skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Using Statistical Analysis Software to Advance Nitro Plasticizer Wettability

Abstract

Statistical analysis in science is an extremely powerful tool that is often underutilized. Additionally, it is frequently the case that data is misinterpreted or not used to its fullest extent. Utilizing the advanced software JMP®, many aspects of experimental design and data analysis can be evaluated and improved. This overview will detail the features of JMP® and how they were used to advance a project, resulting in time and cost savings, as well as the collection of scientifically sound data. The project analyzed in this report addresses the inability of a nitro plasticizer to coat a gold coated quartz crystal sensor used in a quartz crystal microbalance. Through the use of the JMP® software, the wettability of the nitro plasticizer was increased by over 200% using an atmospheric plasma pen, ensuring good sample preparation and reliable results.

Authors:
 [1]
  1. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Publication Date:
Research Org.:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA). Office of Defense Nuclear Security (NA-70)
OSTI Identifier:
1377391
Report Number(s):
LA-UR-17-27815
DOE Contract Number:
AC52-06NA25396
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
97 MATHEMATICS AND COMPUTING; 36 MATERIALS SCIENCE

Citation Formats

Shear, Trevor Allan. Using Statistical Analysis Software to Advance Nitro Plasticizer Wettability. United States: N. p., 2017. Web. doi:10.2172/1377391.
Shear, Trevor Allan. Using Statistical Analysis Software to Advance Nitro Plasticizer Wettability. United States. doi:10.2172/1377391.
Shear, Trevor Allan. 2017. "Using Statistical Analysis Software to Advance Nitro Plasticizer Wettability". United States. doi:10.2172/1377391. https://www.osti.gov/servlets/purl/1377391.
@article{osti_1377391,
title = {Using Statistical Analysis Software to Advance Nitro Plasticizer Wettability},
author = {Shear, Trevor Allan},
abstractNote = {Statistical analysis in science is an extremely powerful tool that is often underutilized. Additionally, it is frequently the case that data is misinterpreted or not used to its fullest extent. Utilizing the advanced software JMP®, many aspects of experimental design and data analysis can be evaluated and improved. This overview will detail the features of JMP® and how they were used to advance a project, resulting in time and cost savings, as well as the collection of scientifically sound data. The project analyzed in this report addresses the inability of a nitro plasticizer to coat a gold coated quartz crystal sensor used in a quartz crystal microbalance. Through the use of the JMP® software, the wettability of the nitro plasticizer was increased by over 200% using an atmospheric plasma pen, ensuring good sample preparation and reliable results.},
doi = {10.2172/1377391},
journal = {},
number = ,
volume = ,
place = {United States},
year = 2017,
month = 8
}

Technical Report:

Save / Share:
  • Environmental exposure measurements are, in general, positive and may be subject to left censoring; i.e,. the measured value is less than a ''detection limit''. In occupational monitoring, strategies for assessing workplace exposures typically focus on the mean exposure level or the probability that any measurement exceeds a limit. Parametric methods used to determine acceptable levels of exposure, are often based on a two parameter lognormal distribution. The mean exposure level, an upper percentile, and the exceedance fraction are used to characterize exposure levels, and confidence limits are used to describe the uncertainty in these estimates. Statistical methods for random samplesmore » (without non-detects) from the lognormal distribution are well known for each of these situations. In this report, methods for estimating these quantities based on the maximum likelihood method for randomly left censored lognormal data are described and graphical methods are used to evaluate the lognormal assumption. If the lognormal model is in doubt and an alternative distribution for the exposure profile of a similar exposure group is not available, then nonparametric methods for left censored data are used. The mean exposure level, along with the upper confidence limit, is obtained using the product limit estimate, and the upper confidence limit on an upper percentile (i.e., the upper tolerance limit) is obtained using a nonparametric approach. All of these methods are well known but computational complexity has limited their use in routine data analysis with left censored data. The recent development of the R environment for statistical data analysis and graphics has greatly enhanced the availability of high-quality nonproprietary (open source) software that serves as the basis for implementing the methods in this paper.« less
  • This report identifies hydroxylated nitro-polynuclear aromatic hydrocarbons (OH-NO{sub 2}PAHs) in an ambient air-particulate extract by electron impact (EI) and negative chemical ionization (NCI) high-resolution gas chromatography/mass spectrometry (HRGC/MS) analyses. Bioassay-directed fractionation through three sequential separations led to detection of these OH-NO{sub 2}-PAHs in a highly mutagenic and substantially simplified subfraction of the extract. The compound class identification was based on comparison of both EI and NCI mass spectra of reference OH-NO{sub 2}-pyrenes. The HRGC/MC retention values for seven OH-NO{sub 2}-fluoranthene isomer. Quantification of this compound class by NCI HRGC/MC with on-column injection is demonstrated with sensitivity to 0.5 ng/micro L.
  • The purpose of this project is to explore the feasibility of a total design approach to fault-tolerant digital computer systems. A fault-tolerant computer system is one which has the ability to produce correct results even in the presence of any single fault. The total design approach of this project will attempt to show that both the software and the hardware that comprise the system meet specified availability and reliability criteria. This preliminary report discusses the motivation for the project, the need for a formal technique for the verification of fault-tolerance of both hardware and software, discusses preliminary results, and presentsmore » recommendations for further work.« less