The microstructure plays a key role in the mechanical properties of hyper-eutectic Al-Si alloys. In this study, we investigate microstructural evolution rheo-die-casting (RDC) on Al-15Si-4Cu-0.5Mg alloy using rotational barrel system. Our findings demonstrate that higher speed and pouring temperature reduce size roundness primary Si particles semisolid slurry. Additionally, during RDC, dendriti...

Today, tool life in high pressure die casting (HPDC) is of growing interest. A common agreement that primarily decided by the thermal load and temperature gradients materials. Conformal cooling with growth additive manufacturing has raised interest as a means extending life. In current paper, conformal channels’ performance effect on cycle high-pressure rheocasting are investigated for conventi...

As the nature of the causative agent of yellow fever was unknown, it was necessary at the beginning of these experiments to formulate a spedal method of cultivation. The methods employed have been similar to those recommended 1 for the cultivation of Leptospira icterohcemorrhagice (Inada and Ido). Instead of the serum and citrate plasma of the rabbit or other animal, serum and plasma from nonim...

Megakaryocytes and their precursor cells were sustained in mouse bone marrow suspension cultures for over 4-6 wk. Megakaryocyte precursor cells were detected by their capacity to form colonies of megakaryocytes in semisolid agar cultures. Colony formation was dependent on the presence of medium conditioned by a myelomonocytic leukemic cell line (WEHI-3CM). Megakaryocytes from the liquid and sem...

The effect of NaHCO2 on the growth of Neisseria gonorrhoeae cultures was studied in a liquid and a semisolid growth medium. With a broth culture, NaHCO3 (0.009 M) greatly reduced the lag phase and also increased the total growth. The same concentration of bicarbonate supported rapid growth when added to the semisolid medium if the plates were individually incubated in sealed plastic bags. In a ...

©2010 Particle Sciences, Inc. All rights reserved. centrifugation is a highly accurate technique, but it is not amenable to use with semisolid formulations with high viscosities. All the methods discussed so far may require dilution and while some drug product formulations can be diluted without changing the particle size distribution, others may be affected by dilution, which makes meaningful ...