this paper presents the new geochemical isotopes sr and nd, and the mineralization data for the south neyshabour volcanic rocks located in ne iran. based on the chemical classifications, the studied rocks are basaltic trachy andesite, trachy andesite, trachyte, and trachy dacite in composition. all the analyzed volcanic rocks display enrichment in light rare earth elements (lree) relative to th...

This note describes some cryptographic issues related to multi‐located parties. In general, multi‐located parties make it difficult for the eavesdropper to mount the man‐in‐the‐ middle attack. Conversely, they make it easier to address problems such as joint encryption and error correction coding. It is easier to implement the three‐stage quantum cryptography protocol.