Joe Dunman's Schoolhouse was the only school in that school community, and it reported a student population of 13 in 1883. Harris County Common School Districts: In 1884, Texas passed the Common School Law, which provided for a system of county schools to be established across the state.
1 9. 2  Disadvantages Of Nanoparticlesï Small size & large surface area can lead to particle aggregation .ï Physical handling of nano particles is difficult in liquid and dry forms.ï Limited drug loading.ï Toxic metabolites may form.3  10. Disadvantages Of Nanoparticlesï Small size & large surface area can lead to particle aggregation .ï Physical handling of nano particles is difficult in liquid and dry forms.ï Limited drug loading.ï Toxic metabolites may form. 2  10.
How nanoparticles change color. It turns out that goldâs capability to catalyze reactions is not the only thing that changes at the nanoscale. Gold can actually change color depending on the size of the gold particles. One of the characteristics of metals is that they are shiny because light reflects off their surfaces. This reflectivity has to do with electron clouds at the surface of metals.