Queen is a British rock band formed in 1970 consisting of Freddie Mercury, Brian May, Roger Taylor, and John Deacon. Their early works were influenced by progressive rock and heavy metal but later incorporated styles like arena rock and pop rock. Before forming Queen, May and Taylor played together in Smile. Mercury encouraged them to experiment more, joined the band in 1970, and suggested the name Queen. Deacon was recruited in 1971 before their debut album. Queen became hugely successful in the 1970s and 1980s, headlining major concerts including Live Aid in 1985. Freddie Mercury announced he had AIDS in 1991 and died the next day at home surrounded by family and friends.
Martin Luther King Jr. was a Baptist minister and prominent leader in the American civil rights movement from the 1950s until his assassination in 1968. He advocated for racial equality and justice for African Americans through nonviolent protest and helped organize landmark demonstrations like the Montgomery Bus Boycott and the 1963 March on Washington. King's message of nonviolence and his inspirational speeches, including his "I Have a Dream" address, were instrumental in the passage of civil rights legislation in the 1960s. He was awarded the Nobel Peace Prize in 1964 for his civil rights work.
The document provides information on various aspects of Colombian culture, including traditional dances like cumbia, salsa, and champeta; traditional clothing from different regions; popular festivals and carnivals throughout the year like the Black and White Festival in Pasto and the Flower Festival in Medellin; traditional Colombian foods like bandeja paisa, ajiaco, and arepas; and the stunning colonial town of Barichara known as the prettiest town in Colombia.
Queen is a British rock band formed in 1970 consisting of Freddie Mercury, Brian May, Roger Taylor, and John Deacon. Their early works were influenced by progressive rock and heavy metal but later incorporated styles like arena rock and pop rock. Before forming Queen, May and Taylor played together in Smile. Mercury encouraged them to experiment more, joined the band in 1970, and suggested the name Queen. Deacon was recruited in 1971 before their debut album. Queen became hugely successful in the 1970s and 1980s, headlining major concerts including Live Aid in 1985. Freddie Mercury announced he had AIDS in 1991 and died the next day at home surrounded by family and friends.
Martin Luther King Jr. was a Baptist minister and prominent leader in the American civil rights movement from the 1950s until his assassination in 1968. He advocated for racial equality and justice for African Americans through nonviolent protest and helped organize landmark demonstrations like the Montgomery Bus Boycott and the 1963 March on Washington. King's message of nonviolence and his inspirational speeches, including his "I Have a Dream" address, were instrumental in the passage of civil rights legislation in the 1960s. He was awarded the Nobel Peace Prize in 1964 for his civil rights work.
The document provides information on various aspects of Colombian culture, including traditional dances like cumbia, salsa, and champeta; traditional clothing from different regions; popular festivals and carnivals throughout the year like the Black and White Festival in Pasto and the Flower Festival in Medellin; traditional Colombian foods like bandeja paisa, ajiaco, and arepas; and the stunning colonial town of Barichara known as the prettiest town in Colombia.
2. НАХОЖДЕНИЕ В ПРИРОДЕ
Никель достаточно распространённый элемент, содержится
в земной коре в связанном виде, самородный металл
встречается в железных метеоритах. Месторождения никеля
имеются в Канаде, России, ЮАР, Кубе, Украине.
3. ПРИМЕНЕНИЕ НИКЕЛЯ В ЖИЗНИ
Никель находит широкое применение в промышленности и
других областях, он является основой большинства
суперсплавов, с его помощью проводят никелирование для
защиты поверхности металлов от коррозии, его используют
в химической и радиационных технологиях, производстве
аккумуляторов, медицине, музыкальной промышленности и
в монетном деле.
4. ПОЛЕЗНЫЕ СВОЙСТВА НИКЕЛЯ И ЕГО ВЛИЯНИЕ НА
ОРГАНИЗМ
Никель принимает участие в активации ферментов,
кроветворении и формировании носителей генной
информации, продлевает и усиливает действие инсулина,
оказывает благотворное влияние на деятельность почек и
гипофиза, оказывает помощь клеточным мембранам и
нуклеиновым кислотам в сохранении их структуры,
поставляет кислород в клетки тканей, имеет свойство
снижать артериальное давление.
5. ИСТОРИЯ ОТКРЫТИЯ НИКЕЛЯ
Тогда никель относили к "полуметаллу" - простому веществу,
обладающему как свойствами металлов, так и неметаллов.
Данная точка зрения подвергалась серьезным сомнениям. Но в
1775 году швед Т. Бергман доказал, что никель - простое
вещество. Окончательное утверждение никеля произошло в
1804 году, когда немецкий химик И. Рихтер получил чистый
никель путем восстановления никелевого купороса.
6. ОБ ЭЛЕМЕНТЕ
Никель это элемент десятой группы, четвёртого периода
периодической системы химических элементов Д. И.
Менделеева, с атомным номером 28. Обозначается
символом Ni. Никель это пластичный, ковкий, переходный
металл серебристо-белого цвета, при обычных
температурах на воздухе покрывается тонкой плёнкой
оксида.
7. ОТКРЫТ
Никель открыт шведским химиком А.Кронстедтом в 1751.
Аксель Фредрик Кронстедт – шведский минералог и химик.
Родился в Стрёпсте, провинция Сёдерманланд. Окончил
Упсальский университет.Работал там же профессором
химии и минералогии, а также в Горной академии.