Sherman is a city in and the county seat of Grayson County, Texas, United States. The city's estimated population as of 2009 was 38,407. It is also one of two principal cities in the Sherman-Denison Metropolitan Statistical Area. The City of Sherman was named after General Sidney Sherman (July 23, 1805 â August 1, 1873), a hero of the Texas Revolution. The community was designated as the county seat by the act of the Texas legislature which created Grayson County on March 17, 1846.
A standard curve is a type of graph used as a quantitative research technique.Multiple samples with known properties are measured and graphed, which then allows the same properties to be determined for unknown samples by interpolation on the graph.o analyze the data, one locates the measurement on the Y-axis that corresponds to the assay measurement of the unknown substance and follows a line to intersect the standard curve. The corresponding value on the X-axis is the concentration of substance in the unknown sample.
A standard curve is used to determine the concentration of a substance that is unknown. To start the standard curve test known concentrations of similar solutions, one way to do this is using a spectrophotometer to measure absorption when compared with concentration. standard curve is a tool used in research the concentration of substances quantitatively. It is used to find the concentrations of unknown substances. This is done by comparing the assay data of the unknown substance concentrations to that of the known.