We developed a lattice Boltzmann model to investigate the droplet dynamics in microfluidic devices. In our model, a stress-free boundary condition was proposed to conserve the total mass of flow system and improve the numerical stability for flows with low Reynolds number. The model was extensively validated by the benchmark cases including the Laplace’s law, the static contact angles at solid ...

A new direct contact platform for capillary column precise temperature control based upon the use of individually controlled sequentially aligned Peltier thermoelectric units is presented. The platform provides rapid temperature control for capillary and microbore liquid chromatography columns and allows simultaneous temporal and spatial temperature programming. The operating temperature range ...

in this paper, a very efficient method, called single matrix block analyzer (smba), has been developed to determine relative permeability and capillary pressure curves from spontaneous imbibition (si) data. smba mimics realistically the si tests by appropriate boundary conditions modeling. in the proposed method, a cuboid with an identical core plug height is considered. the equal dimensions of...

cardiovascular disease is the common cause of mortality in diabetic subjects. recently, it is indicated that peroxisome proliferator-activated receptors (ppars) agonists have beneficial effect on cardiovascular system especially on angiogenesis. ppars have three isotypes: pparα, pparβ/δ and pparγ. in this study, we evaluated the effect of bezafibrate as pan ppar agonist on myocardial capillary ...

background hemangiomas, usually, present at the first few hemangiomas, usually, present at the first few months of life and are the most common benign tumor in children. there are various therapeutic methods for hemangioma. capillary hemangioma is a type of hemangiomas. the steps of treatment of a child with capillary hemangioma in taleghani hospital of gorgan, iran, are reported. case report i...

Doxorubicin (DOX) is one of the most effective anti-cancer drugs in oncology, but may cause a cumulative dose-dependent cardiomyopathy in a number of cancer patients. The effect of DOX on the heart was studied in mice treated with i.v. injections of 2 mg/kg by measuring morphometric parameters, including nuclear index (number of non-myocytes/number of myocyte nuclei), reticulin index (reticulin...

In this study, direct laboratory measurements of unsteady-state imbibition test are used in a new approach to obtain relative permeability curves with no predetermined functionality assumptions. Four equations of continuity, Darcy’s law, cumulative oil production, and water fractional flow are employed in combination together under certain assumptions to present the new approach which interpret...

purpose: to evaluate the results of verteporfin photodynamic therapy (pdt) in vasoproliferative tumors (vpt) of the retina and retinal capillary hemangiomas (rch). methods: in a retrospective case series, 6 tumors in 5 eyes with vpt, and 3 rch in 3 eyes underwent pdt which was performed using intravenous verteporfin. eyes were evaluated for tumor regression, final best-corrected visual acuity (...

Proper selection of capillary tube it is essential to study the effect of capillary tube geometry on the performance of refrigeration systems. The literature review is focused on the influence of geometrical parameters like tube length, diameter, coil pitch, number of twist and twisted angle on pressure drop and coefficient of performance (COP) of the system. These parameters can be optimized u...