118 dentistry students were studied to show the possible correlation between ph, concentration of ca2+, p3+, na+, and k+ of saliva and decay, missing, and filling tooth (dmft index). candidates were between 20 and 30 years old and had no background systemic disorders; medial and dental histories, age, sex, and dmft index were recorded in a questionnaire organized for this purpose. saliva sample...

Rocky slopes are vulnerable to landslides and mudslides, which pose a major threat human life property. Research is being conducted improve the adhesion between soil minerals by mineral-solubilizing bacteria manage scientifically develop novel methods for slope greening. From of Nanjing Mufu Mountain’s weathered rock walls, we isolated various bacteria. During bacterial solubilization test, dis...

The response of a Petrocalcic Palexeroll dedicated to the cultivation vegetables (Apium graveolens L.) with rotation mixture cereals and legumes when organic amendments are added has been studied; specifically, three fertilization treatments were experimented with: two (LSM COA) one chemical fertilizers (I). LSM COA plots managed according regulations governing production, while in I, conventio...

A known failing of many popular random graph models is that the Aldous–Hoover Theorem guarantees these graphs are dense with probability one; that is, the number of edges grows quadratically with the number of nodes. This behavior is considered unrealistic in observed graphs. We define a notion of edge exchangeability for random graphs in contrast to the established notion of infinite exchangea...

Directed graphs occur throughout statistical modeling of networks, and exchangeability is a natural assumption when the ordering of vertices does not matter. There is a deep structural theory for exchangeable undirected graphs, which extends to the directed case via measurable objects known as digraphons. Using digraphons, we first show how to construct models for exchangeable directed graphs, ...