refers to the fact that different samples of a particular element may have different isotopic compositions depending on their origins. This is why most elements have a fractional atomic mass/weight listed in periodic tables. It reflects the "relative" abundance of isotopes. (Note, I've also hear...
In subject area: Mathematics The relative abundance is usually expressed as the percentage of the number of electrons in the ith group to the total number of electrons emitted. From: Alpha-, Beta- and Gamma-Ray Spectroscopy, 1968 About this pageSet alert ...
in the atmospheric column over the Arctic region, observed during the 1990s,, resembles the onset of the Antarctic ozone `hole' in the mid-1980s, but the two polar regions differ significantly with respect to the relative contributions of chemistry and atmospheric dynamics to the ozone abundance...
A model for random sampling and estimation of relative protein abundance in shotgun proteomics . Anal. Chem. 76 , 4193–420110.1021/ac04... S Liu,CM Chan,LT Weng,... - 《Analytical Chemistry》 被引量: 22发表: 2004年 Automated statistical analysis of protein abundance ratios from data ...
In our modern age of chocolate abundance, the only thing we need to worry about is choosing which type of chocolate to buy. While we all have favorite brands and varieties of flavors, chocolate is divided into three main categories. Dark chocolate is the "purest" form of modern chocolate, ...
In the quantitative proteomic studies, numerous in vitro and in vivo peptide labeling strategies have been successfully applied to measure differentially regulated protein and peptide abundance. These approaches have been proven to be versatile and repeatable in biological discoveries. 15N metabolic labeling...
abundance (RSA) in the local community under restricted immigration. Here we present a theoretical framework for the unified neutral theory of biodiversity2and an analytical solution for the distribution of the RSA both in the metacommunity (Fisher's log series) and in the local community, where ...
From this perspective, the set of dinucleotide odds ratio (relative abundance) values constitute a signature of each DNA genome, which can discriminate between sequences from different organisms. Dinucleotide-odds ratio values appear to reflect not only the chemistry of dinucleotide stacking energies ...
ABSTRACT: The occurrence, distribution and influence of authigenic clays in reservoir rocks of Agbada Formation, Niger Delta Authigenic clays have major control on the petrophysical properties relating to reservoir quality and are particularly sensitive to the relative abundance ... O Ehinola,OR Yussuf...
I am looking to correct my understanding about the relative abundance of particles and antiparticles created before the two periods of annihilation: (1) protons/neutrons and anti-protons/anti-neutrons, and (2) electrons and positrons. In a previous thread... Buzz Bloom Thread Nov 21, 2015 Ta...