Measurements of axial segregation of binary mixtures of glass beads having different diameters in a rotating horizontal cylinder are reported. For rotation speeds of ~ 15 rpm a mixed state quickly (within a few minutes) segregates into sharp bands of alternating large and small glass beads along the axis of rotation. Decreasing the rotation speed to ~ 5 rpm causes the bands to disappear, restor...

Figure (A) Coronal, contrast-enhanced, T1-weighted, head showed a left parietal ring-enhancing multilocular lesion showed restricted diffusion on axial diffusion-we seen on apparent diffusion coefficient (ADC) imaging. Funding: None. Conflict of Interest: None. Authorship: All authors had access to the data and participated in writing the manuscript. Requests for reprints should be addressed to...

In vivo diffusion tensor imaging (DTI) of rat thoracic spinal cord was performed on five healthy rats. Axial diffusion images were obtained using a standard spin echo diffusion weighted sequence. The fractional anisotropy (FA), longitudinal (LD) and transverse (TD) diffusivities and the mean diffusivity were estimated. Differences in these parameters between white and grey matter were in accord...

Leucoencephalopathy with brainstem and spinal cord involvement and elevated lactate is a white matter disorder caused by DARS2 mutations. The pathology is unknown. We observed striking discrepancies between improvement on longitudinal conventional magnetic resonance images and clinical deterioration and between large areas of high signal on diffusion-weighted imaging and small areas with low ap...

Transport of proteins to and from cilia is crucial for normal cell function and survival, and interruption of transport has been implicated in degenerative and neoplastic diseases. It has been hypothesized that the ciliary axoneme and structures adjacent to and including the basal bodies of cilia impose selective barriers to the movement of proteins into and out of the cilium. To examine this h...

The behaviour of passive tracer particles in capillary Poiseuille flow is investigated with regard to the residence time in short axial sections of length z , in which z /a < Va/D, where a is the capillary radius, V is the mean velocity and D the coefficient of molecular diffusion. While methods exist for calculating moments of the crosssectionally averaged axial concentration distribution as a...

OBJECTIVE Here, we retrospectively investigate the value of voxel-wisely plotted diffusion tensor-derived (DTI) axial, radial and mean diffusivity for the early detection of malignant transformation (MT) in WHO II glioma compared to contrast-enhanced images. MATERIALS AND METHODS Forty-seven patients underwent brain magnetic resonance imaging follow-up between 2006-2014 after gross-tumor rese...