objective(s): an increase in nitric oxide (no) production has been reported in cirrhotic cardiomyopathy and, portal hypertension. since minocycline has been shown to inhibit no overproduction, we aimed to examine its role in a rat model of ccl4-induced cirrhotic cardiovascular complications. materials and methods: portal pressure and inotropic responsiveness of isolated papillary muscles to iso...

the ramifications of the portal vein in the liver of horses were studied by using corrosion casting and gross dissection. the portal vein in the horse supplies the hepatic lobes by six major branches. the right lobe is supplied by three main branches, namely the dorsal diaphragmatic, the right caudodorsal and the right intermediate branches. the left branch supplies the left lateral and medial ...

sedimentation is one of the most important problems in harbors that results in considerable economic costs. harbor planforms affects the flow pattern in the harbor basin and consequently, plays an important role in sediment transport and sedimentation. in the present study, a two dimensional depth-averaged hydrodynamic and sediment transport model has been developed to investigate the effect of...

In studying the fluid flow and heat transfer in microchannels and minichannels, various claims have been made regarding transition at Reynolds numbers significantly below 2300. As a first step in identifying the reasons for such reports on early transition, the effect of entrance geometry on the pressure drop and transition to turbulence was studied in a conventional channel of 19 mm inside dia...

Conventional diagnostic X-ray units are used for radiographic imaging in many countries. For obtaining entrance surface doses, a numerical dose determination method has been applied in Japan. Although this technique is effective, it has to account for errors, particularly fluctuations, due to the beam quality and output of X-ray tubes. As a part of our quality control procedures, we recorded th...

Numerous species of solitary bees and wasps build linear nests with only one entrance. Developing insects must orient themselves inside their nest to choose the correct direction in which to emerge. Misorientation and chewing towards the dead end of the nest can result in significant mortality. Most insects position themselves towards the nest entrance during cocoon construction; however, some ...

With the rapid development of Internet technology, the portal has been envisioned as one of the greatest opportunities to improve the management of enterprise information. A number of portals associated with enterprise information management have been developed and implemented, for example, custom portal, employee portal, e-market portal, business portal, enterprise collaboration portal, enterp...