Vascular Dementia: Introduction. Vascular dementia is the second most common type of dementia after Alzheimer's disease. Vascular dementia is a neurodegenerative disorder of the brain in which there is cognitive decline and deficiencies in mental performance that generally occur in steps.
Basics of RF drive test/testing. RF Drive test/testing is the procedure to evaluate performance of wireless modem/system while driving(or in motion). The wireless modem or system may include any wireless standards such as GSM,WCDMA,HSPA,UMTS,LTE,WIMAX,WLAN etc.
RF VALUE-RETENTION FACTOR CHROMATOGRAPHY. Rf value =Distance of the center of spot from the starting point or the distance travelled by the sample or analyte divided by Distance of solvent front from starting point or the distance travelled by the solvent front in chromatography.r Retention factor is the difference in rate of movement of the components in chromatography is caused by various factors.