|
Abundance
Abundance may refer to: In science and technology * Abundance (economics), the opposite of scarcities * Abundance (ecology), the relative representation of a species in a community * Abundance (programming language), a Forth-like computer programming language * Abundance and abundancy index are related but distinct notions in mathematics, see abundant number * In chemistry: ** Abundance (chemistry), when a substance in a reaction is present in high quantities ** Abundance of the chemical elements, a measure of how common elements are *** Natural abundance, the natural prevalence of different isotopes of an element on Earth *** Abundance of elements in Earth's crust In literature * ''Abundance'' (novel), a 2021 novel by Jakob Guanzon * ''Abundance'' (play), a 1990 stage play written by Beth Henley * Al-Kawthar ("Abundance"), the 108th sura of the Qur'an * '' Abundance: The Future Is Better Than You Think'', a 2012 book by Peter Diamandis and Steven Kotler Other uses * Abu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Abundance Of The Chemical Elements
The abundance of the chemical elements is a measure of the Type–token distinction#Occurrences, occurrence of the chemical elements relative to all other elements in a given environment. Abundance is measured in one of three ways: by the mass fraction (chemistry), mass-fraction (the same as weight fraction); by the mole fraction, mole-fraction (fraction of atoms by numerical count, or sometimes fraction of molecules in gases); or by the volume fraction, volume-fraction. Volume-fraction is a common abundance measure in mixed gases such as planetary atmospheres, and is similar in value to molecular mole-fraction for gas mixtures at relatively low densities and pressures, and ideal gas mixtures. Most abundance values in this article are given as mass-fractions. For example, the abundance of oxygen in pure water can be measured in two ways: the ''mass fraction'' is about 89%, because that is the fraction of water's mass which is oxygen. However, the ''mole-fraction'' is about 33% becau ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Abundance (ecology)
In ecology, local abundance is the relative representation of a species in a particular ecosystem. It is usually measured as the number of individuals found per sample. The ratio of abundance of one species to one or multiple other species living in an ecosystem is referred to as relative species abundances. Both indicators are relevant for computing biodiversity. A variety of sampling methods are used to measure abundance. For larger animals, these may include spotlight counts, track counts and roadkill counts, as well as presence at monitoring stations. In many plant communities the abundances of plant species are measured by plant cover, i.e. the relative area covered by different plant species in a small plot. Abundance is in simplest terms usually measured by identifying and counting every individual of every species in a given sector. It is common for the distribution of species to be skewed so that a few species take up the bulk of individuals collected. Relative species ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Natural Abundance
In physics, natural abundance (NA) refers to the abundance of isotopes of a chemical element as naturally found on a planet. The relative atomic mass (a weighted average, weighted by mole-fraction abundance figures) of these isotopes is the atomic weight listed for the element in the periodic table. The abundance of an isotope varies from planet to planet, and even from place to place on the Earth, but remains relatively constant in time (on a short-term scale). As an example, uranium has three naturally occurring isotopes: 238U, 235U and 234U. Their respective natural mole-fraction abundances are 99.2739–99.2752%, 0.7198–0.7202%, and 0.0050–0.0059%. For example, if 100,000 uranium atoms were analyzed, one would expect to find approximately 99,274 238U atoms, approximately 720 235U atoms, and very few (most likely 5 or 6) 234U atoms. This is because 238U is much more stable than 235U or 234U, as the half-life of each isotope reveals: 4.468 × 109 years for 238U com ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Abundance Generation
Abundance Investment (formerly Abundance Generation) is a UK-based online investment platform which claims to offer ethical and socially beneficial investments that contribute to a green economy. Investments offered are mainly renewable energy projects in the UK, with investors receiving a share of the profits from the generation and sale of low-carbon electricity. Abundance Investment is authorised and regulated by the Financial Conduct Authority in the UK. Risks of investing in renewable energy All investment carries risk, and Abundance, as a regulated crowdfunding platform, is required to clearly set out these risks for all potential investors. For renewable energy projects, something could go wrong and an investor may not get back all or any of their original investment. Abundance debentures are usually long-term investments which investors should expect to hold for the full 20 years. Although Abundance facilitates a process for debentures to be bought and sold before ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Abundance (economics)
Post-scarcity is a theoretical economic situation in which most goods can be produced in great abundance with minimal human labor needed, so that they become available to all very cheaply or even Gratis versus libre, freely. Post-scarcity does not mean that scarcity has been eliminated for ''all'' goods and services, but that all people can easily have their basic survival needs met along with some significant proportion of their desires for goods and services. Writers on the topic often emphasize that some commodities will remain scarce in a post-scarcity society. Models Speculative technology Futurists who speak of "post-scarcity" suggest economies based on advances in automation, automated manufacturing technologies, often including the idea of self-replicating machines, the adoption of division of labour which in theory could produce nearly all goods in abundance, given adequate raw materials and energy. More speculative forms of nanotechnology such as molecular assembl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Abundant Number
In number theory, an abundant number or excessive number is a number for which the sum of its proper divisors is greater than the number. The integer 12 is the first abundant number. Its proper divisors are 1, 2, 3, 4 and 6 for a total of 16. The amount by which the sum exceeds the number is the abundance. The number 12 has an abundance of 4, for example. Definition A number ''n'' for which the ''sum'' ''of'' ''divisors'' ''σ''(''n'') > 2''n'', or, equivalently, the sum of proper divisors (or aliquot sum) ''s''(''n'') > ''n''. Abundance is the value ''σ''(''n'') − ''2n'' (or ''s''(''n'') − ''n''). Examples The first 28 abundant numbers are: :12, 18, 20, 24, 30, 36, 40, 42, 48, 54, 56, 60, 66, 70, 72, 78, 80, 84, 88, 90, 96, 100, 102, 104, 108, 112, 114, 120, ... . For example, the proper divisors of 24 are 1, 2, 3, 4, 6, 8, and 12, whose sum is 36. Because 36 is greater than 24, the number 24 is abundant. Its abundance is 36 − 24 = 12. Prope ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Abundance Of Elements In Earth's Crust
The abundance of elements in Earth's crust is shown in tabulated form with the estimated crustal abundance for each chemical element shown as mg/kg, or parts per million (ppm) by mass (10,000 ppm = 1%). Estimates of elemental abundance are difficult because (a) the composition of the upper and lower crust are quite different, and (b) the composition of the continental crust can vary drastically by locality. David KringComposition of Earth's continental crust as inferred from the compositions of impact melt sheets Lunar and Planetary Science XXVIII List of abundance by element See also * Abundances of the elements (data page) * Atmospheric chemistry * Clarke number — lists of historical data and terminology * List of chemical elements This is a list of the 118 chemical elements which have been identified as of 2022. A chemical element, often simply called an element, is a type of atom which has the same number of protons in its atomic nucleus (i.e., the same atomic ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Al-Kawthar
Al-Kawthar ( ar, الكوثر, "Abundance") is the 108th chapter (sūrah) of the Quran. It is the shortest chapter, consisting of three '' ayat'' or verses: : We have given thee abundance : So pray to your Lord and sacrifice o Him alone : Indeed, your enemy is the one cut off. There are several different opinions as the timing and contextual background of its supposed revelation (''asbāb al-nuzūl''). According to Ibn Ishaq, it is an earlier "Meccan surah", which is believed to have been revealed in Mecca, sometime before the Isra and Mi'raj. Text and meaning Text and transliteration *Hafs from Aasim ibn Abi al-Najud ¹ ² ³ *Warsh from Nafiʽ al-Madani ¹ ² ³ Meanings Verily, We have granted you (O Muhammad) Al-Kauthar (a river or lake in Paradise); Therefore turn in prayer to your Lord and sacrifice (to Him only). For he who makes you angry (O Muhammad), - he will be cut off (from every good thing in this world and in the Hereafter). ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Abundance (novel)
''Abundance'' is a 2021 novel by Jakob Guanzon about wealth inequality, and human worth. It is Guanzon's first novel. It covers concepts including inherited medical debt, poverty, food security, criminal justice system, and illegal drug trade.NPR review /ref>Twin Cities Pioneer Press review /ref> The novel was longlisted for the 2021 |
Abundance (chemistry)
In a chemical reaction, a reactant is considered to be in abundance if the quantity of that substance is high and virtually unchanged by the reaction. Abundance differs from excess in that a reactant in excess is simply any reactant other than the limiting reagent; the amount by which a reactant is in excess is often specified, such as with terms like "twofold excess", indicating that there is twice the amount of reactant necessary for the limiting reagent to be completely reacted. In this case, should the reaction go to completion, the quantity of the reactant in excess will have halved. When performing kinetic or thermodynamic studies, it is often useful to have one or more reactants in abundance, as it allows their concentrations to be treated as constants (or parameter A parameter (), generally, is any characteristic that can help in defining or classifying a particular system (meaning an event, project, object, situation, etc.). That is, a parameter is an element of a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Abundance (play)
Abundance may refer to: In science and technology * Abundance (economics), the opposite of scarcities * Abundance (ecology), the relative representation of a species in a community * Abundance (programming language), a Forth-like computer programming language * Abundance and abundancy index are related but distinct notions in mathematics, see abundant number * In chemistry: ** Abundance (chemistry), when a substance in a reaction is present in high quantities ** Abundance of the chemical elements, a measure of how common elements are *** Natural abundance, the natural prevalence of different isotopes of an element on Earth *** Abundance of elements in Earth's crust In literature * ''Abundance'' (novel), a 2021 novel by Jakob Guanzon * ''Abundance'' (play), a 1990 stage play written by Beth Henley * Al-Kawthar ("Abundance"), the 108th sura of the Qur'an * '' Abundance: The Future Is Better Than You Think'', a 2012 book by Peter Diamandis and Steven Kotler Other uses * Abundance ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Abundance (programming Language)
Abundance may refer to: In science and technology * Abundance (economics), the opposite of scarcities * Abundance (ecology), the relative representation of a species in a community * Abundance (programming language), a Forth-like computer programming language * Abundance and abundancy index are related but distinct notions in mathematics, see abundant number * In chemistry: ** Abundance (chemistry), when a substance in a reaction is present in high quantities ** Abundance of the chemical elements, a measure of how common elements are *** Natural abundance In physics, natural abundance (NA) refers to the abundance of isotopes of a chemical element as naturally found on a planet. The relative atomic mass (a weighted average, weighted by mole-fraction abundance figures) of these isotopes is the atomi ..., the natural prevalence of different isotopes of an element on Earth *** Abundance of elements in Earth's crust In literature * ''Abundance'' (novel), a 2021 novel by Jakob Gu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
