BVD is recognised as one of the most economically important endemic diseases of cattle. Bovine Viral Diarrhoea (BVD) is caused by the bovine viral diarrhoea virus (BVDV). The genus Pestivirus of the family Flaviviridae consists of four recognised species: Bovine viral diarrhoea virus type 1 (BVDV-1), Bovine viral diarrhoea type 2 (BVDV-2), Border disease virus (BDV) and Classical swine fever (CSF) virus . Pestiviruses are single stranded positive-sense RNA viruses. Although the natural host for BVDV is cattle, it can also affect sheep and wild animals, including deer and pigs. BVD is recognised as one of the most economically important endemic diseases of cattle.
Often, an electric device, known as an ultrasonic, sonic scaler, or power scaler may be used during scaling and root planing. Ultrasonic scalers vibrate at a frequency to help with removing stain, plaque and calculus. In addition, ultrasonic scalers create tiny air bubbles through a process known as cavitation.
Today you can get ultrasonic systems with frequencies ranging from 20 to 950 kHz, which one to choose depends on what your cleaning job is, what type of soil is to be removed and how clean your part needs to be. In reality, most systems to day incorporate more than one frequency of ultrasonics.ny ultrasonic tank will clean a part. The determining factor is how clean do you want the part. If you are looking for a level of cleanliness such as laser parts or semiconductor wafers you need to take additional steps. The most common ultrasonic cleaning process consists of 5 steps.