supramolecule self assembly polyamidoamine (pamam) dendrimer refers to the chemical systems made up of a discrete number of assembled molecular subunits or components. these strategies involve the covalent assembly of hierarchical components reactive monomers, branch cells or dendrons around atomic or molecular cores according to divergent/convergent dendritic branching principles, systematic f...

styrene polymerization through frp and atrp methods was carried out at 110oc, while in-depth studies were performed by monte carlo simulation.the changes in monomer conversion, initiator concentration, average molecular weight, and polydispersity index were computed over the course of the polymerization. as the results indicate, compared to atrp, the frp reaches higher conversion in a similar r...

Green tea is a herbal plant that can be used to maintain health because of its high antioxidant compounds. Along with the development pharmaceutical technology, drug delivery systems are also increasingly developing, one which transetosomes. The purposes this study determine effect variations in concentration soy lecithin and ethanol on characterization Transetosomes made using heat method form...

Polyelectrolytic complexation has stood out due to its application in the development of drug delivery systems using biopolymers as raw materials. The formation complexes between cashew gum and chitosan can be intermediated by cross-links, mediated action sodium tripolyphosphate crosslinking agent. These polymers have been used nanotechnological formulations protect peptide drugs, such insulin,...

Abstract – HCTN7. Plasma cholesterol level plays an important role in atherosclerosis and cardiovascular diseases. Piperine, alkaloid form of black pepper is known to reduce uptake. In this paper, piperine-loaded chitosan nanoparticles (CTS-PIP NPs) were prepared by ionic gelation method. Molecular interactions among the components confirmed FT-IR spectroscopy. Transmission electron microscopy ...

We have established the solid–fluid coexistence region for a system of polydisperse hard spheres with near-Gaussian diameter distributions, as a function of polydispersity. Significantly, we observe a ‘terminal’ polydispersity above which there can be no fluid–solid coexistence. At the terminus the polydispersity is 5.7% for the solid and 11.8% for the fluid while the volume fractions are 0.588...

The influence of polydispersity on the magnetization is analysed in a nonequilibrium situation where a cylindrical ferrofluid column is forced to rotate with constant frequency, like a rigid body in a homogeneous magnetic field that is applied perpendicular to the cylinder axis. Then, the magnetization and the internal magnetic field are no longer parallel to each other and their directions dif...

We compare results for the number-weighted mean radius and polydispersity obtained either by directly fitting number distributions to dynamic light scattering (DLS) data or by converting results obtained by fitting intensityweighted distributions. We find that results from fits using number distributions are angle independent. We find that converting intensity-weighted distributions is not alwa...

We compare results for the number-weighted mean radius and polydispersity obtained either by directly fitting number distributions to dynamic light-scattering data or by converting results obtained by fitting intensity-weighted distributions. We find that results from fits using number distributions are angle independent and that converting intensity-weighted distributions is not always reliabl...