O QUE SIGNIFICA TRIGONAL EM INGLÊS
Sistema de cristal de Trigonal
Na cristalografia, o sistema de cristal trigonal é um dos sete sistemas de cristal, e o sistema de rede romboédrica é um dos sete sistemas de rede. Eles geralmente são confundidos um com o outro: os cristais no sistema de rede romboédrica estão sempre no sistema de cristal trigonal, mas alguns cristais, como quartzo, estão no sistema de cristal trigonal, mas não no sistema de rede romboédrica. O sistema de rede romboédrica consiste na rede romboédrica, enquanto o sistema de cristal trigonal consiste nos grupos de cinco pontos dos sete grupos espaciais com uma rede romboédrica. Existem 25 grupos espaciais cujos grupos de pontos são um dos cinco no sistema de cristal trigonal, consistindo dos sete grupos espaciais associados ao sistema de rede romboédrica juntamente com 18 dos 45 grupos espaciais associados ao sistema de rede hexagonal. O grupo do ponto trigonal descreve a simetria de um objeto produzido pelo alongamento de um cubo ao longo da diagonal do corpo. A estrutura de Bravais romboédrica resultante é gerada por três vetores primitivos de igual comprimento que fazem ângulos iguais uns com os outros.
definição de trigonal no dicionário inglês
A definição de trigonal no dicionário é também: rhombohedral. relacionando ou pertencendo ao sistema de cristal caracterizado por três eixos iguais que são igualmente inclinados e não perpendiculares uns aos outros.
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10 LIVROS EM INGLÊS RELACIONADOS COM «TRIGONAL»
Descubra o uso de
trigonal na seguinte seleção bibliográfica. Livros relacionados com
trigonal e pequenos extratos deles para contextualizar o seu uso na literatura.
1
Crystal Structure Determination
For this reason, many texts recognize only six crystal systems, and treat trigonal
as a subset of hexagonaL The trigonal system does, however, have one unique
feature, and that is the rhombohedral unit celL In this case, the smallest primitive
...
2
Structure and Bonding in Crystalline Materials
Trigonal and hexagonal groups The relationship between trigonal and
hexagonal cells is worthy of special consideration [19]. For crystals that have one
of the 25 trigonal space group symmetries, it is always possible to choose a
hexagonal ...
3
Introduction to Crystallography
EXERCISE 3-3 Why is it not possible to have an orthorhombic cell that is /, A, B,
and C centered all at once? EXERCISE 3-4 Why is X-centered tetragonal not
possible? How about A and B centering together? 3-7 Distinction between
trigonal ...
4
Handbook of Optical Materials
... Rubidium gadolinium bromide RbGd2Br7 Orthorhombic (Pnma) Rubidium
gadolinium vanadate Rb3Gd(V04)2 Trigonal Rubidium gadolinium vanadate
RbGd(V04)2 Tetragonal (P4/mmm) Rubidium gallium selenate RbGa(Se04)2
Trigonal ...
5
General Chemistry, Enhanced Edition
(for example, linear, trigonal planar, and tetrahedral) give molecules of zero
dipole moment; that is, the molecules are nonpolar. Those geometries in which
the X atoms tend to be on one side of the molecule (for example, bent and
trigonal ...
Darrell Ebbing, Steven D. Gammon,
2010
A curve C is said to be trigonal if it allows a mapping C — + P1 of degree 3. This
is obviously equivalent to the existence on C of a free linear system g\ , which is
complete for g > 2. It is fairly easy to show that on a hyperelliptic curve of genus ...
7
Enzymatic Reaction Mechanisms
In the case of five-membered ring cyclic phosphates, the relief of strain on
formation of the transition state is sufficient to allow the formation of trigonal
bipyramidal oxyphosphoranes as discrete intermediates in an associative
mechanism.
Perry A. Frey, Adrian D. Hegeman,
2007
8
Basic Elements of Crystallography
Figure 55 Primitive rhombohedral an lattice may be considered as hexagonal cell
, reduce the sixfold symmetry axis. mitive rhombohedral and a R centered
hexagonal unit cells. A primitive trigonal considered as a R centered hexagonal
lattice.
Nevill Gonzalez Szwacki, Teresa Szwacka,
2010
9
Tungsten Carbides: Structure, Properties and Application in ...
length. of. the. other. six. edges. is. (afi/s. +. cl21/4)1/2. In nonstoichiometric
compounds M2X with this structure, the first coordination sphere of any metal
atom is a trigonal prism formed by six sites of the nonmetallic sublattice (Fig. 3.16
a).
Alexey S. Kurlov, Aleksandr I. Gusev,
2013
10
Groups St Andrews 2005:
Definition 2 A Riemann surface X is said to be trigonal if it admits a three sheeted
covering f X → ̂C onto the Riemann sphere. If f is a cyclic regular covering then
X is called cyclic trigonal. The covering f will be called the (cyclic) trigonal ...
10 NOTÍCIAS NAS QUAIS SE INCLUI O TERMO «TRIGONAL»
Conheça de que se fala nos meios de comunicação nacionais e internacionais e como se utiliza o termo
trigonal no contexto das seguintes notícias.
Battery buffer takes the strain
... Sciences and co-workers have synthesised Na0.5NbO2, a layered oxide in which the NbO6 clusters are edge-sharing trigonal prisms rather than octahedra. «Royal Society of Chemistry, jul 15»
L. Kent Wolgamott: Bri Murphy's "Crowns and Nitrous Oxide" looks at …
... is a series of digital prints on aluminum of an MRI profile -- again of her brain -- with geometric patterns imposed over the brain image -- titled “Trigonal Slice.”. «Lincoln Journal Star, jul 15»
Scientists propose 3D graphene-like 'hyper-honeycomb' structures
Two examples of 3D lattices based on a carbon-based planar trigonal structure: (a) the hyper-honeycomb and (b) an eight-atom unit cell. A “zoo” of other ... «Phys.Org, jul 15»
Research and honors
in Research and Politics (April-June 2015): 1-7. David L. Cedeño and Christopher G. Hamaker, CHE, authored “Synthesis and Structure of a Trigonal Planar ... «Illinois State University Stories, jul 15»
Conservation laws, radiative decay rates, and excited state …
Solution of the pseudo-angular momentum model of a trigonal complex. .... even when the pseudo-octahedral and trigonal symmetries are strongly broken. «Nature.com, jun 15»
One Spindle Housing, Two Dedicated Spindle Motors
The trigonal (nutating) head design on Swiss-made Reiden RX14 and RX18 universal five-axis machines can more readily access the workpiece to enable ... «Modern Machine Shop, fev 15»
Researchers find a way to reduce contact resistance with …
Crystal structures of the 2H and 1T phases, respectively. In the upper diagram, trigonal prismatic (a) and octahedral (b) coordinations are shown. The lower ... «Phys.Org, set 14»
Supercomputers reveal strange, stress-induced transformations in …
... the backbone distorts towards isolated six-atom rings, while molybdenum disulfide undergoes a distinct distortion towards trigonal pyramidal coordination. «Phys.Org, jul 14»
JEE Advanced 2014: Complete Syllabus
... model and shapes of molecules (linear, angular, triangular, square planar, pyramidal, square pyramidal, trigonal bipyramidal, tetrahedral and octahedral). 4. «India Today, mai 14»
asif khan's megafaces light up winter olympics
the actuators are arranged in a trigonal pattern. why? 'we have examined how organic forms – in our case the human face – can best be displayed with only a ... «Designboom, jan 14»