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4 hours ago · Cristina Kahlo (sister) Signature. Magdalena Carmen Frida Kahlo y Calderón[a] (Spanish pronunciation: [ˈfɾiða ˈkalo]; 6 July 1907 – 13 July 1954 [1]) was a Mexican painter known for her many portraits, self-portraits, and works inspired by the nature and artifacts of Mexico. Inspired by the country's popular culture, she employed a ...
1 day ago · A protein is a polyamide. Secondary structure: regularly repeating local structures stabilized by hydrogen bonds. The most common examples are the α-helix, β-sheet and turns. Because secondary structures are local, many regions of different secondary structure can be present in the same protein molecule.
1 day ago · The Asian elephant (Elephas maximus), also known as the Asiatic elephant, is a species of elephant distributed throughout the Indian subcontinent and Southeast Asia, from India in the west to Borneo in the east, and Nepal in the north to Sumatra in the south. Three subspecies are recognised— E. m. maximus, E. m. indicus and E. m. sumatranus.
1 day ago · John Edgar Hoover (January 1, 1895 – May 2, 1972) was an American law enforcement administrator who served as the final Director of the Bureau of Investigation (BOI) and the first Director of the Federal Bureau of Investigation (FBI). President Calvin Coolidge first appointed Hoover as director of the BOI, the predecessor to the FBI, in 1924. After 11 years in the post, Hoover became instrumental in founding the FBI in June 1935, where he remained as director for an additional 37 years ...
1 day ago · Tamoxifen is a selective estrogen receptor modulator (SERM). [46] Even though it is an antagonist in breast tissue it acts as partial agonist on the endometrium and has been linked to endometrial cancer in some women. Therefore, endometrial changes, including cancer, are among tamoxifen's side effects. [47]
1 day ago · Who’s ahead in the national polls? Updating average for each candidate in 2024 presidential polls, accounting for each poll's recency, sample size, methodology and house effects.
1 day ago · 538’s 2024 presidential election forecast model showing Democrat Kamala Harris’s and Republican Donald Trump’s chances of winning.
