Showing 20 pages using this property.
Property "HasComment" (as page type) with input value "The applied potential is divided into a) two electrode potentials, each of which is the dif- ference of potential existing between the bulk of the solution and the interior of the con- ducting material of the electrode, b) an IR or ohmic potential drop through the solution of resistance R at electric current I, and c) another ohmic potential drop through each elec- trode and its metallic leads.@en" contains invalid characters or is incomplete and therefore can cause unexpected results during a query or annotation process.
Property "HasComment" (as page type) with input value "For an atom or nucleus, this energy is quantized and can be written as:
W = g μ M B
where g is the appropriate g factor, μ is mostly the Bohr magneton or nuclear magneton, M is magnetic quantum number, and B is magnitude of the magnetic flux density.
-- ISO 80000@en" contains invalid characters or is incomplete and therefore can cause unexpected results during a query or annotation process.
Property "HasComment" (as page type) with input value "The word subjective applies to property intrisically subjective or non-well defined. In general, when an black-box-like procedure is used for the definition of the property.
This happens due to e.g. the complexity of the object, the lack of a underlying model for the representation of the object, the non-well specified meaning of the property symbols.
A 'SubjectiveProperty' cannot be used to univocally compare 'Object'-s.
e.g. you cannot evaluate the beauty of a person on objective basis.@en" contains invalid characters or is incomplete and therefore can cause unexpected results during a query or annotation process.
Property "HasComment" (as page type) with input value "Coulometry used to measure the amount of substance is a primary reference measurement procedure [VIM 2.8] not requiring calibration with a standard for a quantity of the same kind (i.e. amount of substance).@en" contains invalid characters or is incomplete and therefore can cause unexpected results during a query or annotation process.
Property "HasComment" (as page type) with input value "Pt has a very small overpotential for hydrogen evolution, which determines the negative potential limit in protic solvents. Pt adsorbs hydrogen, resulting in hydrogen adsorption/desorption waves. However, the positive potential limit in polar aprotic solvents free of oxygen and water is higher than that for any other commonly used electrode materials. In the presence of water and/or oxygen, Pt forms a film of oxide (and/or chemisorbed oxygen), resulting in potentially interfering waves or peaks.@en" contains invalid characters or is incomplete and therefore can cause unexpected results during a query or annotation process.
Property "HasComment" (as page type) with input value "The Rydberg constant represents the limiting value of the highest wavenumber (the inverse wavelength) of any photon that can be emitted from the hydrogen atom, or, alternatively, the wavenumber of the lowest-energy photon capable of ionizing the hydrogen atom from its ground state.@en" contains invalid characters or is incomplete and therefore can cause unexpected results during a query or annotation process.
Property "HasComment" (as page type) with input value "A limiting current is reached when the overpotential is sufficiently large that the faradaic current is deter- mined solely by the ability to supply electroactive species by mass transport. A limiting current is there- fore independent of applied potential over a corresponding finite potential range. A limiting current may have the character of an adsorption, catalytic, diffusion, or kinetic current, and may include a migration current.@en" contains invalid characters or is incomplete and therefore can cause unexpected results during a query or annotation process.
Property "HasComment" (as page type) with input value "Quantities that are ratios of quantities of the same kind (for example length ratios and amount fractions) have the option of being expressed with units (m/m, mol/mol to aid the understanding of the quantity being expressed and also allow the use of SI prefixes, if this
is desirable (μm/m, nmol/mol).
-- SI Brochure@en" contains invalid characters or is incomplete and therefore can cause unexpected results during a query or annotation process.
Property "HasComment" (as page type) with input value "This class is the practical implementation of the EMMO pluralistic approach for which the only objective categorization is provided by the Universe individual and all the Quantum individuals.
Between these two extremes, there are several subjective ways to categorize real world objects, each one provide under a 'Perspective' subclass.@en" contains invalid characters or is incomplete and therefore can cause unexpected results during a query or annotation process.
Property "HasComment" (as page type) with input value "At positive potentials, Au forms an oxide and/or chemisorbed oxygen layer, while in the presence of com- plexing anions, such as chloride or cyanide, it readily undergoes oxidation and dissolution, limiting its working potential range and its applications.@en" contains invalid characters or is incomplete and therefore can cause unexpected results during a query or annotation process.
Property "HasComment" (as page type) with input value "A quantity is not necessarily a property, since it is possible to write "10 kg", without assigning this quantity to a specific object.
However, a quantitative property is always a quantity.@en" contains invalid characters or is incomplete and therefore can cause unexpected results during a query or annotation process.
,
Property "HasComment" (as page type) with input value "SI distinguishes between a quantity (an abstract concept) and the quantity value (a number and a reference).
The EMMO, following strict nominalism, denies the existence of abstract objects and then collapses the two concepts of SI quantity and SI quantity value into a single one: the 'Quantity'.
So, for the EMMO the symbol "kg" is not a physical quantity but simply a 'Symbolic' object categorized as a 'MeasurementUnit'.
While the string "1 kg" is a 'Physical Quantity'.@en" contains invalid characters or is incomplete and therefore can cause unexpected results during a query or annotation process.
Property "HasComment" (as page type) with input value "I_{SW}@en" contains invalid characters or is incomplete and therefore can cause unexpected results during a query or annotation process.
Property "HasComment" (as page type) with input value "Ångström is not mentioned in the SI system and deprecated by the International Bureau of Weights and Measures (BIPM).
Dispite of that, it is often used in the natural sciences and technology.@en" contains invalid characters or is incomplete and therefore can cause unexpected results during a query or annotation process.
Property "HasComment" (as page type) with input value "An equation with variables can always be represented as:
f(v0, v1, ..., vn) = g(v0, v1, ..., vn)
where f is the left hand and g the right hand side expressions and v0, v1, ..., vn are the variables.@en" contains invalid characters or is incomplete and therefore can cause unexpected results during a query or annotation process.
Property "HasComment" (as page type) with input value "Direct coulometry at controlled potential is usually carried out in convective mass trans- fer mode using a large surface working electrode. Reference and auxiliary electrodes are placed in separate compartments. The total electric charge is obtained by integration of the I–t curve or can be measured directly using a coulometer.@en" contains invalid characters or is incomplete and therefore can cause unexpected results during a query or annotation process., Property "HasComment" (as page type) with input value "In principle, the end point at which I = 0, i.e. when the concentration of species under study becomes zero, can be reached only at infinite time. However, in practice, the electrolysis is stopped when the current has decayed to a few percent of the initial value and the charge passed at infinite time is calculated from a plot of charge Q(t) against time t. For a simple system under diffusion control Qt= Q∞[1 − exp(−DAt/Vδ)], where Q∞ = limt→∞Q(t) is the total
charge passed at infinite time, D is the diffusion coefficient of the electroactive species, A the electrode area, δ the diffusion layer thickness, and V the volume of the solution.@en" contains invalid characters or is incomplete and therefore can cause unexpected results during a query or annotation process.
Property "HasComment" (as page type) with input value "The silver coulometer is a primary reference measurement procedure [VIM 2.8] for charge and current. By weighing the mass of silver deposited in a known time at constant current, the charge and current are calculated from Faraday’s laws of electrolysis@en" contains invalid characters or is incomplete and therefore can cause unexpected results during a query or annotation process.
Property "HasComment" (as page type) with input value "Variations in data are generated by an agent (not necessarily human) and are intended to be decoded by the same or another agent using the same encoding rules.
Data are always generated by an agent but not necessarily possess a semantic meaninig, either because it's lost or unknown or because simply they possess none (e.g. a random generation of symbols).
A data object may be used as the physical basis for a sign, under Semiotics perspective.@en" contains invalid characters or is incomplete and therefore can cause unexpected results during a query or annotation process.
Property "HasComment" (as page type) with input value "A symbolic is recognized as reference unit also if it is not part of a quatity (e.g. as in the sentence "the Bq is the reference unit of Becquerel").
For this reason we can't declare the axiom:
ReferenceUnit SubClassOf: inverse(hasReferenceUnit) some Quantity
because there exist reference units without being part of a quantity.
This is peculiar to EMMO, where quantities (symbolic) are distinct with properties (semiotics).@en" contains invalid characters or is incomplete and therefore can cause unexpected results during a query or annotation process.
Property "HasComment" (as page type) with input value "1. Conducting medium in which the flow of electric current is accompanied by the movement of ions.
2. Substance that provides ions on dissolution in a solvent or on melting.@en" contains invalid characters or is incomplete and therefore can cause unexpected results during a query or annotation process., Property "HasComment" (as page type) with input value "A solid electrolyte is a solid material where the predominant charge carriers are ions. For example: NASICON (Na Super Ionic Conductor), which has the general formula Na1+xZr2P3-xSix O12 , 0 < x < 3.@en" contains invalid characters or is incomplete and therefore can cause unexpected results during a query or annotation process., Property "HasComment" (as page type) with input value "An ionic liquid is an electrolyte composed of a salt that is liquid below 100 °C. Ionic liquids have found uses in electrochemical analysis, because their unconventional properties include a negligible vapor pressure, a high thermal and electrochemical stability, and exceptional dissolution properties for both organic and inorganic chemical species.@en" contains invalid characters or is incomplete and therefore can cause unexpected results during a query or annotation process.
Property "HasComment" (as page type) with input value "Differential pulse polarography is differential pulse voltammetry in which a dropping mercury electrode is used as the working electrode. A pulse is applied before the mechani- cally enforced end of the drop and the current is sampled twice: just before the onset of the pulse and just before its end. The pulse width is usually 10 to 20 % of the drop life. The drop dislodgement is synchronized with current sampling, which is carried out as in DPV.@en" contains invalid characters or is incomplete and therefore can cause unexpected results during a query or annotation process., Property "HasComment" (as page type) with input value "The ratio of faradaic current to charging current is enhanced and the negative influence of charging current is partially eliminated in the same way as in normal pulse voltammetry (NPV). Moreover, subtraction of the charging current sampled before the application of the pulse further decreases its negative influence. Due to the more enhanced signal (faradaic current) to noise (charging current) ratio, the limit of detection is lower than with NPV.@en" contains invalid characters or is incomplete and therefore can cause unexpected results during a query or annotation process.
