Results 251 to 260 of about 2,175,387 (287)
Some of the next articles are maybe not open access.

Compositional data analysis

Occupational and Environmental Medicine, 2020
Recently, Keskitalo et al presented a study focused on the association of bronchoalveolar lavage fluid (BALF) cell differential counts (CDCs) with the smoking habits and the number of asbestos bodies (ABs) in a population of patients with asbestosis.1 They also dealt with the dependence between the survival time of the patients and the BALF CDCs, as ...
Barabesi L., Sartorelli P.
openaire   +4 more sources

Composition analysis of polybutenes

Journal of Chromatography A, 1963
Abstract The structure and composition of polyolefins made from pure isobutylene and from isobutylene diluted with various amouts of other light olefins have been investigated. The techniques used were nuclear magnetic resonance and combined anaerobic pyrolysis and gas chromatography.
E M, BARRALL, R S, PORTER, J F, JOHNSON
openaire   +2 more sources

Compositional analysis of biomer

Journal of Biomedical Materials Research, 1990
AbstractBiomer, a segmented polyether polyurethane, has been analyzed via hydrolysis/gas chromatography to determine its composition. In addition to the previously reported 4,4′‐methylene bis(phenyl isocyanate) (MDI), polytetramethylene glycol (PTMO), and ethylenediamine, we now report the presence of diethylamine, 1,3‐diaminocyclohexane and poly ...
J, Belisle, S K, Maier, J A, Tucker
openaire   +2 more sources

Compositional Data Analysis

2011
This book present the history and development of compositional data analysis along with Aitchison's log-ratio approach. It deswcribe the state of the art both in theoretical fields as well as applications in the different fields of science.
V. Pawlowsky Glahn, BUCCIANTI, ANTONELLA
openaire   +1 more source

Composite Structure Analysis

2004
Abstract Analyzing the structure of composite materials is essential for understanding how the part will perform in service. Assessing fiber volume variations, void content, ply orientation variability, and foreign object inclusions helps in preventing degradation of composite performance.
Brian S. Hayes, Luther M. Gammon
openaire   +1 more source

Body Composition Analysis

2012
Most full-size central DXA densitometers have software options to determine body composition from a total body bone density study. This application was first developed for dual photon absorptiometers, but the almost 1-h scan time made such measurements clinically impractical.
Sydney Lou Bonnick, Lori Ann Lewis
openaire   +1 more source

Compositional Data Analysis

Annual Review of Statistics and Its Application, 2021
Compositional data are nonnegative data carrying relative, rather than absolute, information—these are often data with a constant-sum constraint on the sample values, for example, proportions or percentages summing to 1% or 100%, respectively. Ratios between components of a composition are important since they are unaffected by the particular set of ...
openaire   +1 more source

Compositional recurrence analysis

2015 Formal Methods in Computer-Aided Design (FMCAD), 2015
This paper presents a new method for automatically generating numerical invariants for imperative programs. The procedure computes a transition formula which overapproximates the behaviour of a given input program. It is compositional in the sense that it operates by decomposing the program into parts, computing a transition formula for each part, and ...
Azadeh Farzan, Zachary Kincaid
openaire   +1 more source

Monosaccharide Composition Analysis

2021
A monosaccharide composition determination is the first step in the process of characterizing complex carbohydrate. Two frequently used methods, gas chromatography and high-performance liquid chromatography, will be discussed. Usually, the second step in carbohydrate structure characterization is the determination of the linkage types of the ...
openaire   +1 more source

Home - About - Disclaimer - Privacy