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In mechanics, when one observes a rigid body in rotational motion with constant angular acceleration, it is possible to establish equations for its rotational kinematics. This process resembles how linear kinematics are dealt with in simpler motion studies.
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Transformations in mathematics alter the position or orientation of a function’s graph while preserving its fundamental shape. One important type of transformation is the horizontal shift, which involves modifying the input variable within a function’s equation. This operation affects where outputs occur along the horizontal axis but does not alter the function’s overall structure.A horizontal shift is achieved by replacing the input variable x with either x + c or x - c,...
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A rigid body's rotation around a fixed axis makes every point within it trace a circular path around a specific line or point. The term given to this type of spinning is defined by the angular position, symbolized by the angle θ. This angle is gauged from a static reference line to the revolving object. From this angular position, any variation is referred to as angular displacement, denoted by dθ. The extent of this displacement can be calculated in degrees, radians, or...
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Rotaciones bilineales robustas II

Yannik T Woordes1, Burkhard Luy1

  • 1Institute of Organic Chemistry and Institute for Biological Interfaces 4 - Magnetic Resonance, Karlsruhe Institute of Technology (KIT), Kaiserstr. 12, 76131 Karlsruhe, Germany.

Magnetic resonance (Gottingen, Germany)
|February 23, 2026
PubMed
Resumen
Este resumen es generado por máquina.

Las rotaciones bilineales robustas en espectroscopia de RMN, incluidas BIRD, TANGO, BANGO y BIG-BIRD, se mejoran utilizando el principio COB-BIRD. Este método amplía la aplicabilidad a diversos rangos de acoplamiento y condiciones de muestra, mejorando la robustez de los experimentos de RMN.

Palabras clave:
Espectroscopia de RMNRotaciones bilinealesCOB-BIRDSecuencias de pulsosRMN de estado sólidoRMN de estado líquidoControl cuánticoDinámica de espín

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Sus antecedentes:

  • Las rotaciones bilineales son fundamentales en RMN, permitiendo la manipulación selectiva de espines.
  • Los métodos existentes como BIRD, TANGO, BANGO y BIG-BIRD tienen limitaciones con los anchos de banda de pulso y los rangos de constantes de acoplamiento.
  • Avances recientes introdujeron el COB-BIRD para rotaciones bilineales robustas, compensando acoplamientos, compensaciones e inhomogeneidades de B1.

Conclusiones:

  • El COB-BIRD proporciona una plataforma fundamental y versátil para diseñar rotaciones bilineales robustas en RMN.
  • Los métodos desarrollados amplían significativamente la aplicabilidad de las rotaciones bilineales a una gama más amplia de constantes de acoplamiento y condiciones experimentales.
  • Estos avances ofrecen un rendimiento mejorado y nuevas posibilidades para investigaciones complejas de RMN, incluidas aquellas que involucran muestras parcialmente alineadas.