Define mass numbers. mass numbers synonyms, mass numbers pronunciation, mass numbers translation, English dictionary definition of mass numbers. n. The sum of the number of neutrons and protons in an atomic nucleus. Also called nucleon number . American
Definition Chapters and Articles Related Terms Recommended PublicationsChapters and Articles You might find these chapters and articles relevant to this topic. The Big Problems in Star Formation: the Star Formation Rate, Stellar Clustering, and the Initial Mass Function Mark R. Krumholz, in Physics Re...
Body mass index (BMI), an estimate of total body fat. The BMI is defined as weight in kilograms divided by the square of the height in metres: weight/height2 = BMI. This number, which is central to determining whether an individual is clinically defined
Mass numberis an integer (whole number) equal to the sum of the number ofprotonsandneutronsof an atomic nucleus. In other words, it is the sum of the number of nucleons in an atom. Mass number is often denoted using a capital letter A. Contrast this with theatomic number, which is s...
Although there are a number of accurate methods by which to assess body fat (e.g., total body water, total body potassium, bioelectrical impedance, and dual-energy X-ray absorptiometry), the measurement of BMI is the most practical approach in a clinical setting. This is especially true ...
Here, we trace the origin of both of these issues to a hidden freedom in the definition of duals of spinors and the associated field adjoints. In the process, for the first time, we provide a quantum theory of spin one-half fermions that is free from all the mentioned issues. The ...
In this section, we present the mathematical basis of the proposed methodology. First, the problem of virtual lock-mass identification is addressed. A formal definition of VLM peaks is introduced, along with an highly efficient algorithm capable of identifying such peaks in a set of mass spectra...
.This is a more conservative definition than FWHM because for a given quoted resolution (eg, 2000) the peaks are narrower under the 10% valley definition, hence better separated. High resolution is a desirable property in MS because it can help reduce interferences from nearby peaks in the ...
More than 90 types of atoms exist in nature, and each kind of atom forms a different chemical element. Every nucleus of a given chemical element has the same number of protons, and this quantity of protons defines the atomic number of the element and determines the element’s position in ...
Rock mass number, denoted by N, is the stress-freerock mass quality(Q). Stress-effect was considered indirectly in the form of overburden height (H). Thus, N can be defined byEq. (9.1), representing basiccausative factorsin governing the tunneling conditions. ...