PURPOSE Optical coherence tomography angiography (OCT-A) allows noninvasive visualization of retinal vessels in vivo. OCT-A was used to characterize the vascular network of the mouse retina and was compared with fluorescein angiography (FA) and histology. METHODS In the present study, OCT-A based on a Heidelberg Engineering Spectralis system was used to investigate the vascular network in mic...

The behaviour of a cetylpyridinium chloride/sodium salicylate wormlike micellar system undergoing capillary breakup is investigated experimentally. The transient elongational flow induced in a thinning thread is used to study the apparent viscosity and effective relaxation time of the micellar network in extension. The sensitivity of the material response to initial conditions and deformation h...

BACKGROUND The lymphatic pathways of the nasal cavity are of enormous clinical importance. To date there has been no accurate radiographic record of these pathways. METHODS Four halves of the head and neck from 2 fresh human cadavers were studied. RESULTS The capillary network arises from the mucous membrane of the atrium, the turbinates, the floor of the nasal cavity, and the nasopharynx. ...

Angiogenesis, the formation of new capillaries from pre-existing vessels, plays a critical role during bone regeneration and repair. In addition to an appropriate mechanical environment, sufficient supply of oxygen and nutrients is critical for bone formation. Mechano-biological models have been previously used to predict the time course of the differentiation process with the mechanical enviro...

Designed especially for capillary electrochromatography (CEC), silicate-entrapped columns are made by trapping particles of chromatographic packing material in a network of silica. Once entrapped, the capillary no longer requires frits. This renders a more homogeneous and stable packed bed. Accidental breakage of the fragile frits is not an issue with these robust columns. Columns packed with r...

The guidance of endothelial cell organization into a capillary network has been a long-standing challenge in tissue engineering. Some research efforts have been made to develop methods to promote capillary networks inside engineered tissue constructs. Capillary and vascular networks that would mimic blood microvessel function can be used to subsequently facilitate oxygen and nutrient transfer a...

We have simulated the temporal evolution of pressure due to capillary and viscous forces in two-phase drainage in porous media. We analyze our result in light of macroscopic flow equations for two-phase flow. We also investigate the effect of the trapped clusters on the pressure evolution and on the effective permeability of the system. We find that the capillary forces play an important role d...

The development of retinal vessels in the rat from birth to 5 days of age is described. Various techniques including India ink injections into the vascular system, retinal digestion, PAS stained whole mounts, and combinations of these methods were utilized. The first stage in retinal vascularization is the ingrowth of an undifferentiated mesh or syncytium of mesenchymal cells into the peripapil...

Perfusion of the pulmonary acinus has been shown to be generally homogeneous, but there is a significant component that is heterogeneous. To investigate the contribution of the alveolar septal capillary network to acinar perfusion heterogeneity, the passage of fluorescent dye boluses through the subpleural microcirculation of isolated dog lung lobes was videotaped using fluorescence microscopy....

The concept of immiscible displacement as an invasion percolation (IP) process driven by heat and mass transfer is used in a pore network model for convective drying of capillary porous media. The coupling between heat and mass transfer occurs at the liquid-gas interface through temperature dependent equilibrium vapour pressure, surface tension and phase change enthalpy (in evaporation and cond...