Properties of polyether-polyurethane block copolymers: effects of hard segment length distribution

1985 ◽  
Vol 18 (1) ◽  
pp. 32-44 ◽  
Author(s):  
John A. Miller ◽  
Shaow B. Lin ◽  
Kirk K. S. Hwang ◽  
K. S. Wu ◽  
P. E. Gibson ◽  
...  
Keyword(s):  
Block Copolymers ◽  
Hard Segment ◽  
Length Distribution ◽  
Segment Length

Characterization of polyurethane hard segment length distribution using soft hydrolysis/MALDI and Monte Carlo simulation

Polymer ◽  
2013 ◽  
Vol 54 (18) ◽  
pp. 5005-5015 ◽  
Author(s):  
Kaoru Aou ◽  
Alan K. Schrock ◽  
Valeriy V. Ginzburg ◽  
Philip C. Price
Keyword(s):  
Monte Carlo Simulation ◽  
Monte Carlo ◽  
Hard Segment ◽  
Length Distribution ◽  
Segment Length

scholarly journals A Chromosome-Based Model for Estimating the Number of Conserved Segments Between Pairs of Species From Comparative Genetic Maps

Genetics ◽  
2000 ◽  
Vol 154 (1) ◽  
pp. 323-332
Author(s):  
David Waddington ◽  
Anthea J Springbett ◽  
David W Burt
Keyword(s):  
Maximum Likelihood ◽  
Dna Sequences ◽  
Common Ancestor ◽  
Length Distribution ◽  
Genetic Maps ◽  
Segment Length ◽  
Syntenic Block ◽  
Comparative Maps

Abstract Comparative genetic maps of two species allow insights into the rearrangements of their genomes since divergence from a common ancestor. When the map details the positions of genes (or any set of orthologous DNA sequences) on chromosomes, syntenic blocks of one or more genes may be identified and used, with appropriate models, to estimate the number of chromosomal segments with conserved content conserved between species. We propose a model for the distribution of the lengths of unobserved segments on each chromosome that allows for widely differing chromosome lengths. The model uses as data either the counts of genes in a syntenic block or the distance between extreme members of a block, or both. The parameters of the proposed segment length distribution, estimated by maximum likelihood, give predictions of the number of conserved segments per chromosome. The model is applied to data from two comparative maps for the chicken, one with human and one with mouse.

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