Structurally they can be classified according to the functional groups ' locations as alpha-( α -), beta-( β -), gamma-( γ -) or delta-( δ -) amino acids ; other categories relate to polarity, acid / base / neutral, and side chain group type ( including: aliphatic, acyclic, hydroxyl or sulphur-containing, aromatic ).

Carina has the α, β and ε, Vela has γ and δ, Puppis has ζ, and so on.

This name was applied by the Arabs to the asterism of α, β, and γ Aquilae and probably goes back to the ancient Babylonians and Sumerians, who called α Aquilae the eagle star.

In Chinese, the asterism consisting of α, β, and γ Aquilae is known as (, ).

* In Chinese, (), meaning Northern Dipper, refers to an asterism consisting of ε Ursae Majoris, α Ursae Majoris, β Ursae Majoris, γ Ursae Majoris, δ Ursae Majoris, ζ Ursae Majoris and η Ursae Majoris.

It contains both α and β ' phase ; the β '- phase is body-centered cubic and is harder and stronger than α. Alpha-beta brasses are usually worked hot.

It exists in four major polymorphs: α, β, γ and T. Whereas α, β and T phases are based on B < sub > 12 </ sub > icosahedra, the γ-phase can be described as a rocksalt-type arrangement of the icosahedra and B < sub > 2 </ sub > atomic pairs.

Bayer assigned a lower-case Greek letter, such as alpha ( α ), beta ( β ), gamma ( γ ), etc., to each star he catalogued, combined with the Latin name of the star ’ s parent constellation in genitive ( possessive ) form.

Polaris ( α UMi ), Kochab ( β UMi ), Pherkad ( γ UMi ), Yildun ( δ UMi ), Urodelus ( ε UMi ), Ahfa al Farkadain ( ζ UMi ) and Anwar al Farkadain ( η UMi ).

* Convex cone, a subset C of a vector space V is a convex cone if αx + βy belongs to C, for any positive scalars α, β, and any x, y in C

In the following chemical equation with arrows pointing both ways to indicate equilibrium, A and B are reactant chemical species, S and T are product species, and α, β, σ, and τ are the stoichiometric coefficients of the respective reactants and products:

The goat's tail consists of stars β Cap and α < sup > 2 </ sup > Cap: star β Cap being of the third magnitude.

The α and β anomers of glucose.

Note the position of the hydroxyl group ( red or green ) on the anomeric carbon relative to the CH < sub > 2 </ sub > OH group bound to carbon 5: they are either on the opposite sides ( α ), or the same side ( β ).

where A ∈ N ( i. e., A is a single nonterminal ), α, β ∈ ( N U Σ )* ( i. e., α and β are strings of nonterminals and terminals ) and γ ∈ ( N U Σ )< sup >+</ sup > ( i. e., γ is a nonempty string of nonterminals and terminals ).

At room temperature, palladium hydrides may contain two crystalline phases, α and β ( sometimes called α ').

In Samoa the constellation is called Sumu (" triggerfish ") because of its rhomboid shape, while α and β Centauri are called Luatagata ( Two Men ), just as they are in Tonga.

These G proteins are made from three subunits, with the G domain located on the largest one ( the α unit ); together with the two smaller subunits ( β and γ units ), they form a tightly associated protein complex.

These two polymorphs differ by a " kinking " of bonds ; this change in structure gives β-quartz greater symmetry than α-quartz, and they are thus also called high quartz ( β ) and low quartz ( α ).

Scientific experiments have not yet pinpointed any definite evidence that this is the case, although they have placed upper bounds on the maximum possible relative change per year at very small amounts ( roughly 10 < sup >− 17 </ sup > per year for the fine structure constant α and 10 < sup >− 11 </ sup > for the gravitational constant G ).

If c, h, and e were all changed so that the values they have in metric ( or any other ) units were different when we looked them up in our tables of physical constants, but the value of α remained the same, this new world would be observationally indistinguishable from our World.

In fact, the 19S and 11S particles bind to the same sites in the α rings of the 20S core particle although, they each induce gate opening by different mechanism.

Because the 20S particle's central channel is narrow and gated by the N-terminal tails of the α ring subunits, the substrates must be at least partially unfolded before they enter the core.

Proline and glycine are sometimes known as " helix breakers " because they disrupt the regularity of the α helical backbone conformation ; however, both have unusual conformational abilities and are commonly found in turns.

The stars Merak ( β Ursae Majoris ) and Dubhe ( α Ursae Majoris ) are known as the " pointer stars " because they are helpful for finding Polaris, also known as the North Star.

The imaginary phase constant, iβ, can be added directly to the attenuation constant, α, to form a single complex number that can be handled in one mathematical operation provided they are to the same base.

In some implementations the learning coefficient α and the neighborhood function Θ decrease steadily with increasing s, in others ( in particular those where t scans the training data set ) they decrease in step-wise fashion, once every T steps.

Branches are linked to the chains they are branching off from by α ( 1 → 6 ) glycosidic bonds between the first glucose of the new branch and a glucose on the stem chain.

Alkylamides bind particularly to human CB2 and to a much lesser degree to CB1 cannabinoid receptors ; as a result they are implicated in a variety of modulatory functions, including immune suppression, induction of apoptosis, cell migration and inhibition of tumor necrosis factor α TNF-alpha These Alkylamides have similar potency to that of THC at the CB2 receptor, with THC being around 1. 5 times stronger (~ 40 nm vs ~ 60 nm affinities ).

Today, they have been merged again under the name of the fox, but the goose is remembered by the name of the star α Vulpeculae: Anser.

The closed sets of a limit ordinal α are just the closed sets in the sense that we have already defined, namely, those which contain a limit ordinal whenever they contain all sufficiently large ordinals below it.

One performs this classification by saying that two closed forms α and β in are cohomologous if they differ by an exact form, that is, if is exact.

Although α receptors are less sensitive to epinephrine, when activated, they override the vasodilation mediated by β-adrenoreceptors.

Using K-theory, they constructed an example of a torsion Hodge class, that is, a Hodge class α such that for some positive integer n, n α = 0.

If α is infinite then α-indescribable ordinals are totally indescribable, and if α is finite they are the same as Π-indescribable ordinals.

In either case, there is a relative excess of α chains, but these do not form tetramers: Rather, they bind to the red blood cell membranes, producing membrane damage, and at high concentrations they form toxic aggregates.

The pure number we call the fine structure constant and denote by α is a combination of the electron charge, e, the speed of light, c, and Planck's constant, h. At first we might be tempted to think that a world in which the speed of light was slower would be a different world.

It might at first sight seem that there should be four degrees of freedom, as α and β are complex numbers with two degrees of freedom each.

For instance, a special metal alloy might expand 1. 2 micrometers per meter of length for every degree Celsius and this would be expressed as “ α = 1. 2 ppm /° C .” Parts-per notation is also employed to denote the change, stability, or uncertainty in measurements.

The second variable might be given in terms of the parameter m, or as the elliptic modulus k, where k < sup > 2 </ sup > = m, or in terms of the modular angle α, where m = sin < sup > 2 </ sup > α.

The pure number we call the fine structure constant and denote by α is a combination of the electron charge, e, the speed of light, c, and Planck's constant, h. At first we might be tempted to think that a world in which the speed of light was slower would be a different world.

In this case, the value is not directly a measure of how good the modeled values are, but rather a measure of how good a predictor might be constructed from the modeled values ( by creating a revised predictor of the form α + βƒ < sub > i </ sub >).