variation of natural frequencies between modes

Variation in optineurin (OPTN) allele frequencies between and within populations

PURPOSE To evaluate the extent to which mutations in the optineurin (OPTN) glaucoma gene play a role in glaucoma in different populations. METHODS Case-controlled study of OPTN sequence variants in individuals with or without glaucoma in populations of different ancestral origins and evaluate previous OPTN reports. We analyzed 314 subjects with African, Asian, Caucasian and Hispanic ancestrie...

Natural Frequencies and Modes of Gases in Multicylinder Compressor Manifolds and their use in Design

Why frequencies are natural

Research in mathematical cognition has shown that rates, and other interpretations of x/y, are hard to learn and understand. On the other hand, there is extensive evidence that the brain is endowed with a specialized mechanism for representing and manipulating the numerosities of sets – that is, frequencies. Hence, base-rates are neglected precisely because they are rates, whereas frequencies a...

Temporal and microgeographic variation in allozyme frequencies in a natural population of Drosophila buzzatii.

Temporal variation in allozyme frequencies at six loci was studied by making monthly collections over 4 yr in one population of the cactophilic species Drosophila buzzatii. Ten sites were defined within the study locality, and for all temporal samples, separate collections were made at each of these sites. Population structure over microgeographic space and changes in population structure over ...

Causal Natural Modes , Retro - causal Natural Modes and Minimum Radiation Modes

In this talk, we discuss three kinds of modes that are crucial to the understandingof a time domain electromagnetic (EM) response. The first targeted mode is called “causal”natural mode. This mode and its corresponding “causal” natural frequency are widely used inthe analysis of the transient response of a radiating structure, for example, in the SingularityExpansion Method [1]....

Proteomic investigation of natural variation between Arabidopsis ecotypes.

Two-dimensional (2-D) gel electrophoresis and peptide mass fingerprinting were used to investigate the natural variation in the proteome among 8 Arabidopsis thaliana ecotypes, of which 3 were previously shown to display atypical responses to environmental stress. Comparison of 2-D maps demonstrated that only one-quarter of spots was shared by all accessions. On the other hand, only 15% of the 2...