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Publikováno v:
Developmental Brain Research. 93:155-161
Prenatal stress or exposure to excess glucocorticoids are known to alter central nervous system function and to result in lasting changes in reactions to stress. The potential involvement of specific elements of brainstem serotonergic neurons was exa
Publikováno v:
Developmental Brain Research. 88:17-29
In the adult, denervation of adrenergic target tissues leads to compensatory upregulation of receptor sites and to supersensitive responses. When 6-hydroxydopamine (6-OHDA) was given to neonatal rats, cardiac beta-receptors failed to show significant
Autor:
D. P. Taggart, Shigefumi Okada, B. L. Wright, Richard E. Siemon, Robert E. Chrien, G.A. Barnes, Michel Tuszewski, R.B. Webster, D. J. Rej, M. H. Baron
Publikováno v:
Nuclear Fusion. 30:1087-1094
Electron energy transport in field reversed configuration (FRC) equilibria is studied experimentally for a variety of conditions. Up to 37% of the global plasma power loss is attributed to non-convective processes by electrons. The electron temperatu
Autor:
G.A. Barnes, L.M. Earley, W.M. Parsons, Roger P. Shurter, R.L. Carlson, S.A. Eversole, J.G. Mefton, J.N. Downing, David C. Moir, G. Keel, L.A. Builta, J.A. Romero, D.C. Rader
Publikováno v:
Eighth IEEE International Conference on Pulsed Power.
The Dual-Axis Radiographic HydroTest (DARHT) Facility is being designed to produce high-resolution flash radiographs of hydrodynamics experiments. Two 16- to 20-MeV linear induction accelerators (LIA), with an included angle of 900, are used to produ
Autor:
D.C. Rader, L.M. Earley, S.A. Eversole, T.J. Kauppila, W.M. Parsons, David C. Moir, G. Keel, G.A. Barnes, D.J. Liska
Publikováno v:
Eighth IEEE International Conference on Pulsed Power.
Linear induction cells for the Dual-Axis Radiographic Hydrotest (DARHT) Facility have been tested to determine their high-voltage breakdown characteristics. A variety of full scale insulators were tested both in actual cells and in fixtures simulatin
Autor:
G.A. Barnes, L.M. Harley
Publikováno v:
Eighth IEEE International Conference on Pulsed Power.
A laser-triggered, high-voltage vacuum switch using a triggering pellet embedded in the cathode has been developed. The switch was constructed with tungsten electrodes and used either KCI or Poco graphite pellets. An aperture in the anode allowed the
Autor:
M.D. Coleman, Y.G. Chen, G.A. Barnes, J.N. Downing, S.A. Eversole, A. Ramrus, N.C. Jaitly, L.M. Earley, L.D. Caudill, S. Eckhouse, H.H. Reisch
Publikováno v:
Digest of Technical Papers. Tenth IEEE International Pulsed Power Conference.
Technology demonstrations of key components at LANL for the dual-axis radiographic hydro test (DARHT) facility including the turnkey induction cell pulsed power supply (ICPPS) delivered by Maxwell have been in progress at the DARHT integrated test st
Autor:
B. L. Wright, D. J. Rej, M. H. Baron, Michel Tuszewski, Richard E. Siemon, Robert E. Chrien, P.L. Klingner, W.N. Hugrass, D. P. Taggart, G.A. Barnes, Chun Ng
Publikováno v:
Physics of Fluids B: Plasma Physics. 2:2541-2543
Data from an array of external probes provide the first clear evidence for the n=1 rotational instability in field‐reversed configurations. The time evolution and the axial structure of this instability are clarified.
Autor:
Richard E. Siemon, Robert E. Chrien, G.A. Barnes, R.B. Webster, D. J. Rej, M. H. Baron, Michel Tuszewski, D. P. Taggart, Shigefumi Okada, B. L. Wright
Publikováno v:
Physics of Fluids B: Plasma Physics. 2:1706-1708
The poloidal magnetic flux φ in large field‐reversed configuration plasmas is examined experimentally. A wide range of initial equilibrium conditions, with 1≤φ≤8 mWb, is produced by varying the reverse bias magnetic field strength. The flux c