We describe in this Letter the first measurement of multiple islands in the core of a reversed field pinch (RFP). These islands appear with current profile modification leading to magnetic fluctuation reduction in the Madison symmetric torus RFP. Magnetic island widths decrease to an unprecedented level, reducing the overlap of adjacent islands and allowing distinct islands to appear. The struc...

Potential and electron-density fluctuation profiles, phi(r) and ñ(e)(r)/n(e), are measured for the first time in the core of a reversed-field pinch using a heavy ion beam probe. It is found that the fluctuations are broadband and correlated with the core resonant m/n=1/6 tearing mode. The electrostatic-fluctuation-induced particle transport in the core of standard RFP plasmas, estimated from me...

MHD properties of low-aspect-ratio (low-A) reversed field pinch (RFP) plasmas have been studied in RELAX machine with aspect ratio of 2. The MHD behavior appeared in edge magnetic field fluctuations shows strong dependence on toroidal field reversal. In standard or deep-reversal plasmas, the edge magnetic fluctuation has broad toroidal mode spectrum, while it is narrowed by reducing the toroida...

Several studies pointed out the joint role of resistivity η and viscosity ν in determining dynamics emergence helical regimes reversed-field pinch (RFP) plasmas. In this framework, self-consistent time evolution coefficients still lacks a fully satisfying modeling, being constrained by many approximations. work, hypothesis flat profile is relaxed: A inspired Braginskii perpendicular implemented...

The MOF Query, View and Transformation RFP, issued by OMG will result in a key enabling technology for modeldriven development of large distributed systems. We have designed a transformation language which will meet the requirements of this RFP, and several others besides. The language is declarative and patterns based. Transformation descriptions are explicitly reusable and modular. Rules that...

Recently, the world's first transgenic dogs were produced by somatic cell nuclear transfer. However, cellular senescence is a major limiting factor for producing more advanced transgenic dogs. To overcome this obstacle, we rejuvenated transgenic cells using a re-cloning technique. Fibroblasts from post-mortem red fluorescent protein (RFP) dog were reconstructed with in vivo matured oocytes and ...

BACKGROUND Fluorescence-guided surgery (FGS) of tumors is an area of intense development. Peritoneally-disseminated cancer, however, represents a difficult surgical challenge. MATERIALS AND METHODS To help meet this challenge, EL4 mouse T-cell lymphoma cells expressing red fluorescent protein (RFP) were injected intraperitoneally in nude mice. RESULTS Two weeks after injection of EL4-RFP ce...

A generalized analytic representation for the magnetic field and current density profiles in a reversed-field pinch (RFP) is proposed. These profiles have zero current density at the wall and finite plasma pressure. The profiles are characterized by two free parameters here taken to be the field-reversal parameter (F> and pinch parameter (0). From the profiles, many useful quantities such as ma...

Quenching of the reversed-field pinch (RFP) dynamo is observed in numerical simulations using current profile control. A novel algorithm employing active feedback of the dynamo field has been utilized. The quasi-steady state achieved represents an important improvement as compared with earlier numerical work and may indicate a direction for the design of future experiments. Both earlier and the...

Test particle evaluation of the diffusion coefficient in a fusion plasma in the reversed-field pinch (RFP) configuration shows distinct similarities with stellarators when the plasma spontaneously evolves towards a helical shape. The almost total absence of superbanana particles at the levels of helical deformation seen in experiment (Bh/B=10%) causes transport to be proportional to collision f...