These Charts show the thermal deformation temperature and the softening temperature (called the âVicat softening temperatureâ) of major plastics. The heat distortion temperature is the temperature when the test piece placed in the heat medium with bending load applied reaches a specified deflection as temperature rises. The Vicat softening temperature is defined as the temperature where the needle shaped penetrator sinks into the test piece to a specified depth as temperature of the heating medium rises and specified vertical load is applied to the test piece.
Puerto Rico is a territory (Commonwealth) of the United States of America and Puerto Ricans have common citizenship, currency and defense. Although Puerto Ricans are U.S. citizens, residents of Puerto Rico pay no federal income tax, nor can they vote in presidential elections.
Puerto Ricans, either born in the island or in the states, are American citizens. At nine percent of the Latino population in the United States, Puerto Ricans are the second largest Hispanic group nationwide, and comprise 1.5% of the entire population of the United States.espite new demographic trends, New York City continues to be home to the largest Puerto Rican American community in the United States, with Philadelphia having the second largest community. The portmanteau  Nuyorican  refers to Puerto Ricans and their descendants in and around New York.