The aim of this numerical investigation is to evaluate the laminar forced convection of biologically synthesized water-silver nanofluid through a heat sink(HS)filled with porous foam(PHS)using first and second laws of...The aim of this numerical investigation is to evaluate the laminar forced convection of biologically synthesized water-silver nanofluid through a heat sink(HS)filled with porous foam(PHS)using first and second laws of thermodynamics.The impacts of inlet velocity(V=0.5–3 m·s^-1)and volume fraction of nanofluid(φ=0–1%)on the performance metrics of HS are assessed and the outcomes are compared with those of the non-porous HS(NHS).The outcomes revealed that for both the PHS and NHS,the increase of V causes an intensification in convection coefficient,pumping power,and entropy generation due to fluid friction,while the maximum CPU temperature,thermal resistance,and entropy generation due to the heat transfer reduces by boosting V.Also,it was found that the augmentation of V results in intensification in convection coefficient,pumping power,overall hydrothermal performance,and frictional entropy generation,while the opposite is true for maximum CPU temperature,thermal resistance,and thermal entropy generation.Furthermore,it was reported that,except forφ=0.5%,the overall hydrothermal performance of NHS is better than that of PHS,while PHS has better second-law performance than NHS in all the studied cases.Also,it can be concluded that the best hydrothermal performance for PHS belongs toφ=1%and V=0.5 m·s^-1,while for NHS,these values are 1%and 2 m·s^-1.展开更多
Seven new boronic acid adducts of technetium(III) tris(dioxime) (BATO) were prepared and the biodistribution in mice of Tc-99m labelled BATOs were determined. The uptake of 1.62%1D in mice heart at 2 min after injecti...Seven new boronic acid adducts of technetium(III) tris(dioxime) (BATO) were prepared and the biodistribution in mice of Tc-99m labelled BATOs were determined. The uptake of 1.62%1D in mice heart at 2 min after injection of (TcCl)-Tc-99m(MeCDO)(3)BMe indicates high myocardial extraction of this BATO. (TcCl)-Tc-99m(MeCDO)(3)BMe shows promise as a myocardial perfusion imaging agent.展开更多
文摘The aim of this numerical investigation is to evaluate the laminar forced convection of biologically synthesized water-silver nanofluid through a heat sink(HS)filled with porous foam(PHS)using first and second laws of thermodynamics.The impacts of inlet velocity(V=0.5–3 m·s^-1)and volume fraction of nanofluid(φ=0–1%)on the performance metrics of HS are assessed and the outcomes are compared with those of the non-porous HS(NHS).The outcomes revealed that for both the PHS and NHS,the increase of V causes an intensification in convection coefficient,pumping power,and entropy generation due to fluid friction,while the maximum CPU temperature,thermal resistance,and entropy generation due to the heat transfer reduces by boosting V.Also,it was found that the augmentation of V results in intensification in convection coefficient,pumping power,overall hydrothermal performance,and frictional entropy generation,while the opposite is true for maximum CPU temperature,thermal resistance,and thermal entropy generation.Furthermore,it was reported that,except forφ=0.5%,the overall hydrothermal performance of NHS is better than that of PHS,while PHS has better second-law performance than NHS in all the studied cases.Also,it can be concluded that the best hydrothermal performance for PHS belongs toφ=1%and V=0.5 m·s^-1,while for NHS,these values are 1%and 2 m·s^-1.
文摘Seven new boronic acid adducts of technetium(III) tris(dioxime) (BATO) were prepared and the biodistribution in mice of Tc-99m labelled BATOs were determined. The uptake of 1.62%1D in mice heart at 2 min after injection of (TcCl)-Tc-99m(MeCDO)(3)BMe indicates high myocardial extraction of this BATO. (TcCl)-Tc-99m(MeCDO)(3)BMe shows promise as a myocardial perfusion imaging agent.
