Introduction In our previous study performed at 4T on individuals with Parkinson’s Disease (PD) and age-matched controls we have demonstrated that rotating frame relaxation methods employing so-called adiabatic HS1 pulses are capable to separate PD from control subjects based on the values of adiabatic relaxation times in the substantia nigra (SN) [1]. With the goal of investigating the physiol...

The prototype example of frame dragging arises in the Kerr metric. A test particle with zero angular momentum released from a nonrotating frame, far from the source of the Kerr metric, accumulates nonzero angular velocity in the same angular direction as the source of the metric, as the test particle plunges toward the origin (in Boyer-Lindquist coordinates). This “dragging of inertial frames,”...

It is well established that light carrying orbital angular momentum (OAM) can be used to induce a mechanical torque causing an object to spin. We consider the complementary scenario: will an observer spinning relative to the beam axis measure a change in OAM as a result of their rotational velocity? Remarkably, although a linear Doppler shift changes the linear momentum of a photon, the angular...

Examples of axially symmetric solutions to Einstein's field equations are given that exhibit anomalous " negative frame dragging " in the sense that zero angular momentum test particles acquire angular velocities in the opposite direction of rotation from the source of the metric.

The paper describes the multiple rotating frame technique for designing modulated rf fields, that perform broadband heteronuclear decoupling in solution NMR spectroscopy. The decoupling method presented here is understood by performing a sequence of coordinate transformations, each of which demodulates a component of the rf field to a static component, that progressively averages the chemical s...

It is considered neutrino flux in the rotating reference frame. Due to the rotation of the frame, neutrino is observed as a superposition of two states P-transformed one from another. Since P-transformation is forbidden for neutrino, in the rotating reference frame one can detect a half of neutrino flux. Due to the rotation of the earth, the detector of neutrinos can measure a half of the solar...

A new method to measure rotating frame relaxation and to create contrast for MRI is introduced. The technique exploits relaxation along a fictitious field (RAFF) generated by amplitude- and frequency-modulated irradiation in a subadiabatic condition. Here, RAFF is demonstrated using a radiofrequency pulse based on sine and cosine amplitude and frequency modulations of equal amplitudes, which gi...

Neutron resonance spin echo phenomena, produced by resonance coils with adiabatic passage of the neutron spin, are investigated experimentally and theoretically. The adiabatic passage of the neutron spin through a resonance coil requires a specific configuration of the magnetic field. The solution of the Schrödinger equation, obtained for the required configuration, shows the probability of a s...

This paper proposes totally novel kinematics, statics and dynamics of a two-link manipulator and develops a control algorithm based on them which enables two-link manipulators behave more like human or animals. There are two main points: introduction of biarticular muscle/actuator coordination and utilization of the rotating reference frame instead of the fixed frame. These two points are also ...

Gravitational waves from neutron star binary inspirals contain information on strongly-interacting matter in unexplored, extreme regimes. Extracting this requires robust theoretical models of the signatures gravitational-wave signals due to spin and tidal effects. In fact, spins can have a significant impact excitation quasi-normal modes star, which is not included current state-of-the-art wave...