The International Time Bureau ( BIH ) began a time scale, T < sub > m </ sub > or AM, in July 1955, using both local caesium clocks and comparisons to distant clocks using the phase of VLF radio signals.

Using the Debye model, the specific heat and entropy of a pure crystal are proportional to T < sup > 3 </ sup >, while the enthalpy and chemical potential are proportional to T < sup > 4 </ sup >.

If ΔS and / or T are small, the condition ΔG < 0 may imply that ΔH < 0, which would indicate an exothermic reaction.

Absolute temperature measurement is uniquely determined by a multiplicative constant which specifies the size of the " degree ", so the ratios of two absolute temperatures, T < sub > 2 </ sub >/ T < sub > 1 </ sub >, are the same in all scales.

APCs then present the fragments to T helper cells ( CD4 < sup >+</ sup >) by the use of class II histocompatibility molecules on their surface.

If activated cytotoxic CD8 < sup >+</ sup > T cells recognize them, the T cells begin to secrete various toxins that cause the lysis or apoptosis of the infected cell.

where k < sub > B </ sub > is Boltzmann's constant, T is the temperature, R is the resistance, and is the bandwidth of the frequency.

auxiliary regression is TR < sup > 2 </ sup >, where T is the sample size and R < sup > 2 </ sup > is the coefficient of determination.

So-called structure zone models were developed to describe the micro structure and ceramics of thin films as a function of the homologous temperature T < sub > h </ sub > that is the ratio of deposition temperature over melting temperature.

According to these models, a necessary ( but not sufficient ) condition for the occurrence of amorphous phases is that T < sub > h </ sub > has to be smaller than 0. 3, that is the deposition temperature must be below 30 % of the melting temperature.

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.

For the case of a non-commutative base ring R and a right module M < sub > R </ sub > and a left module < sub > R </ sub > N, we can define a bilinear map, where T is an abelian group, such that for any n in N, is a group homomorphism, and for any m in M, is a group homomorphism too, and which also satisfies

As a special case, the three naturally occurring isotopes of the element hydrogen are often specified as H for < sup > 1 </ sup > H ( protium ), D for < sup > 2 </ sup > H ( deuterium ), and T for < sup > 3 </ sup > H ( tritium ).

: T < sub > x </ sub >< sup >*</ sup > M = ( T < sub > x </ sub > M )< sup >*</ sup >

In an adiabatic irreversible process, dQ = 0 is not equal to TdS ( TdS > 0 ) where Q is thermal energy, T is temperature, and S is entropy.

The Central Artery / Tunnel Project ( CA / T ), known unofficially as the Big Dig, was a megaproject in Boston that rerouted the Central Artery ( Interstate 93 ), the chief highway through the heart of the city, into a 3. 5-mile ( 5. 6-km ) tunnel.

These shells can be constructed from pentamers and hexamers by minimizing the number T ( triangulation number ) of nonequivalent locations that subunits occupy, with the T-number adopting the particular integer values 1, 3, 4, 7, 12, 13 ,...( T

For example, a purely dodecahedral virus has a T-number of 1 ( usually written, T = 1 ) and a truncated icosahedron is assigned T = 3.

$ 00 – 01 T / S reference to first directory sector ( 40 / 3 )

A Texas study revealed 17. 3 % percent T. cruzi prevalence in 75 specimens representing four separate small rodent species.

* David T. Mason and Patrick 3.

In this system, the number ten may be written as " A ", " T " or " X ", and the number eleven as " B " or " E " ( another common notation, introduced by Sir Isaac Pitman, is to use a rotated " 2 " for ten and a reversed " 3 " for eleven ).

A medieval T and O map from 1472 showing the division of the world into 3 continents

< T > ::= " 1 " | " 2 " | " 3 " | " 4 "

( 4 ) M → • M * T ( 0 ) # predict from ( 3 )

( 5 ) M → • T ( 0 ) # predict from ( 3 )

( 3 ) M → M • * T ( 0 ) # complete from ( 2 ) and S ( 0 )( 4 )

( 3 ) M → • T ( 2 ) # predict from ( 1 )

( 4 ) T → • number ( 2 ) # predict from ( 3 )

( 2 ) M → T • ( 2 ) # complete from ( 1 ) and S ( 2 )( 3 )

( 3 ) M → M • * T ( 2 ) # complete from ( 2 ) and S ( 2 )( 2 )

( 1 ) M → M * • T ( 2 ) # scan from S ( 3 )( 3 )

( 3 ) M → M • * T ( 2 ) # complete from ( 2 ) and S ( 2 )( 2 )

* BCS theory predicts the dependence of the value of the energy gap E at temperature T on the critical temperature T < sub > c </ sub >.

The questions range from counting ( e. g., the number of graphs on n vertices with k edges ) to structural ( e. g., which graphs contain Hamiltonian cycles ) to algebraic questions ( e. g., given a graph G and two numbers x and y, does the Tutte polynomial T < sub > G </ sub >( x, y ) have a combinatorial interpretation ?).

T denotes the tube axis, and a < sub > 1 </ sub > and a < sub > 2 </ sub > are the unit vectors of graphene in real space.

The database eliminates T < sub > 1 </ sub >' s effects, and T < sub > 2 </ sub > sees only valid data.

The autocrine or paracrine secretion of IL-2 can bind that same T < sub > h </ sub > cell or neighboring T < sub > h </ sub >' s via the IL-2R thus driving proliferation and clonal expansion.

A03 T < sub > 1 </ sub >← π < sub > i </ sub >' B < sub > i '</ sub >

* Blackshield T, < nowiki >' Murphy affair '</ nowiki >, in Blackshield, Coper and Williams The Oxford Companion to the High Court of Australia ( Oxford University Press, 2001 ) ISBN 0-19-554022-0

This ambiguity noted, Hornsby then points out that if A V < sub > T </ sub >- s B, then A caused B to V < sub > I </ sub > ('< sub > T </ sub >' and '< sub > I </ sub >' serving to disintguish between transitive and intransitive uses of the relevant verbs ).