Equations of motion spinning density for extended objects, and corresponding deviation equations are derived. The problem a variable mass to object is obtained. Spinning fluids may be considered as special case express the objects. Meanwhile, tensor can expressed in terms tetrad formalism General Relativity regarded gauge theory gravity. tensors have been derived using specific type Bazanski La...

Electrospinning is a simple method for producing ultrafine fibers, and has attracted much recent interest. The classical approach was either polymer solutions or polymer melts. Bubbfil spinning (e.g. bubble-electrospinning) is a facile method to fabricate nanofibers with high surface area to volume ratio and high porosity. Polyether sulfone (PES) dissolved in N,N-Dimethylacetamide (DMAC) was us...

A recent method to obtain the number of water molecules of hydration of multilamellar lipid vesicles using magic angle spinning nuclear magnetic resonance has been re-examined. The previous interpretation divided the water into bulk and interlamellar water and ignored water in defects (lakes) that are intrinsic to multilamellar lipid vesicles; the result was inconsistent with x-ray results for ...

A new spinning particle with a definite sign of the energy is defined on spacelike hypersurfaces after a critical discussion of the standard spinning particles. They are the pseudoclassical basis of the positive energy (12 , 0) [or negative energy (0, 1 2)] parts of the ( 1 2 , 1 2) solutions of the Dirac equation. The study of the isolated system of N such spinning charged particles plus the e...

We propose the action of d = 4 Anti-de Sitter (AdS) spinning particle with arbitrary fixed quantum numbers. Regardless of the spin value, the configuration space is M4ρ × S 2 where M4ρ is d = 4 AdS space, and two-dimensional sphere S corresponds to spinning degrees of freedom. The model is an AdS counterpart of the massive spinning particle in the Minkowski space proposed earlier. Being AdS-inv...

A new spinning particle with a definite sign of the energy is defined on spacelike hypersurfaces after a critical discussion of the standard spinning particles. They are the pseudoclassical basis of the positive energy (12 , 0) [or negative energy (0, 12)] parts of the ( 1 2 , 1 2) solutions of the Dirac equation. The study of the isolated system of N such spinning charged particles plus the el...

The dynamical equations for a spinning top are derived in which the orientation is speciied by a complex variable using stereographic projection of Poisson's equations. Necessary and suucient conditions for Lyapunov stability of the uncontrolled motion of the spinning top are derived using the Energy-Casimir method. Control laws that globally asymptotically stabilize the spinning top to the sle...

The simplest models describing spinning particles with rigidity, both massive and massless, are reconsidered. The moduli spaces of solutions are completely exhibited in backgrounds with constant curvature. While spinning massive particles can evolve fully along helices in any three-dimensional background, spinning massless particles need anti De Sitter background to be consistent. The main mach...