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BNT 3 (Bulgarian: БНТ 3, romanized: Be ne te tri, previously BNT HD) is a Bulgarian-language public television station, operated by Bulgarian National Television. It broadcasts sport events, movies and cultural programs.
D05295. The smallpox vaccine is the first vaccine to have been developed against a contagious disease. In 1796, British physician Edward Jenner demonstrated that an infection with the relatively mild cowpox virus conferred immunity against the deadly smallpox virus. Cowpox served as a natural vaccine until the modern smallpox vaccine emerged in ...
- Synthesis
- Structure
- Physical Properties
- Applications
- Further Reading
Na0.5Bi0.5TiO3 is not a naturally occurring mineral and several synthesis routes to obtain the compound have been developed. It can be easily prepared by solid state reaction between Na2CO3, Bi2O3 and TiO2at temperatures around 850 °C.
The exact room-temperature crystal structure of sodium bismuth titanate has been a matter of debate for several years. Early studies in the 1960s using X-ray diffraction suggested Na0.5Bi0.5TiO3 to adopt either a pseudo-cubic or a rhombohedral crystal structure. In 2010, based on the high-resolution single-crystal X-ray diffraction data, a monoclin...
Na0.5Bi0.5TiO3 is a relaxor ferroelectric. Its optical band gap was reported to be in the 3.0–3.5 eV.
Various solid solutions with tetragonal ferroelectric perovskites including BaTiO3, Bi0.5K0.5TiO3 have been developed to obtain morphotropic phase boundaries to enhance the piezoelectric properties of Na0.5Bi0.5TiO3. The extraordinarily large strain generated by a field-induced phase transition in sodium bismuth titanate-based solid solutions promp...
Lead-Free Piezoelectrics, Ed. Shashank Priya and Sahn Nahm,(2012), Springer-Verlag, New York. doi:10.1007/978-1-4419-9598-8.
e. The Oxford–AstraZeneca COVID‑19 vaccine, sold under the brand names Covishield [31] and Vaxzevria [1] [32] among others, is a viral vector vaccine for the prevention of COVID-19. It was developed in the United Kingdom by Oxford University and British-Swedish company AstraZeneca, [33] [34] [35] using as a vector the modified chimpanzee ...
Bulgarian. Bulgarian National Television ( Bulgarian: Българска национална телевизия, Balgarska natsionalna televizia) or BNT (БНТ), stylized as ·Б·Н·Т· since 2018, is a public television broadcaster of Bulgaria. BNT was founded in 1959 and started broadcasting on December 26 of the same year. [1] It was ...
BNT 2 ( Bulgarian: БНТ 2, romanized : Be ne te dve) is a Bulgarian-language public television station, operated by Bulgarian National Television. It is the successor to the defunct second program of the national television - Efir 2. Launched on October 16, 2011, the channel replaced the five regional television centers of BNT - BNT Pirin ...
For other uses, see Bridge and tunnel (disambiguation). Bridge and Tunnel (often abbreviated B&T or BNT) is a term – often used pejoratively – to describe people who live in communities surrounding the island of Manhattan in New York City, and commute to it for work or entertainment. It refers to the fact that vehicular travel to the island ...
