Laboratory and numerical experiments are reported on dye advection processes in geostrophic turbulence. The experimental setup is the classical rotating annulus with differential heating which mimics the most essential features of midlatitude atmospheric flow. The main control parameter is the temperature contrast. Fluorescent dye is used as passive tracer, and dispersion is evaluated by digita...

Recent aircraft measurements, primarily in the extratropics, of the horizontal variance of nitrous oxide (N90] and ozone (O• in the middle stratosnho, ro, indicate that horizontal spectra of the tracer variance scale nearly as k -2, where k is the spatial wavenumber along the aircraft flight track [$trahan and Mahlman, 1994; Bacmeister et al., 1996]. This spectral scaling has been regarded as i...

Primary Central Nervous System T- Cell Lymphoma of the Brain in An Immunocompetent Patient central nervous system (PCNS) T-cell lymphoma is a rare disease and rarer if it seen immunocompetent patients. The PCNS makes up 1-7% primary brain tumors. accounts for about 2% all almost 99% are immunocompromised patients (Latta et al 2010, Batchelor 2003). Here, we report case an elderly patient who im...

The classical K41 theory, based on the ideas of Kolmogorov, Richardson and Batchelor, has in recent years with accumulating evidence become subject to increased scrutiny. We elaborate idea that deficiencies theory originate fundamental assumption universal equilibrium, which turn is result basic locality nonlinear interactions. These very assumptions are argued have no anchoring governing Navie...

Yan-Wei Dai,1,2 Sam Young Cho,2,3,* Murray T. Batchelor,2,4,† and Huan-Qiang Zhou2,3 1College of Materials Science and Engineering, Chongqing University, Chongqing 400044, People’s Republic of China 2Centre for Modern Physics, Chongqing University, Chongqing 400044, People’s Republic of China 3Department of Physics, Chongqing University, Chongqing 400044, People’s Republic of China 4Mathematica...

In this paper the power spectrum of passive scalars transported in two dimensional chaotic fluid flows is studied theoretically. Using a wave-packet method introduced by Antonsen et al., several model flows are investigated, and the fact that the power spectrum has the k(-1)-scaling predicted by Batchelor is confirmed. It is also observed that increased intermittency of the stretching tends to ...

Greg A. Barron-Gafford*, Russell L. Scott, G. Darrel Jenerette, Erik P. Hamerlynck and Travis E. Huxman School of Geography and Development, University of Arizona, 845 N. Park Ave, Marshall #526, Tucson, AZ 85721, USA; B2 Earthscience, Biosphere 2, University of Arizona, Tucson, AZ, USA; Southwest Watershed Research Center USDA-ARS, 2000 E. Allen Road, Tucson, AZ 85719, USA; Department of Botan...

Ovidiu Cristian Andronesi, Franziska Loebel, Wolfgang Bogner, Malgorzata Marjanska, Elizabeth Gerstner, Andrew Chi, Tracy T. Batchelor, Daniel P. Cahill, and Bruce R. Rosen Martinos Center for Biomedical Imaging, Department of Radiology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, United States, Department of Neurosurgery, Massachusetts General Hospital, Boston, MA, Unit...