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In mathematics, the projective unitary group PU(n) is the quotient of the unitary group U(n) by the right multiplication of its center, U(1), embedded as scalars.Abstractly, it is the holomorphic isometry group of complex projective space, just as the projective orthogonal group is the isometry group of real projective space.
It awards a scholarship and cash prizes ranging from $250 to $2,500 for the top students and $5,000 to $25,000 for the top schools, plus one of the top five individual scorers (designated as Putnam Fellows) is awarded a scholarship of up to $12,000 plus tuition at Harvard University (Putnam Fellow Prize Fellowship), [1] the top 100 individual ...
6688 20375 Ensembl ENSG00000066336 ENSMUSG00000002111 UniProt P17947 P17433 RefSeq (mRNA) NM_001080547 NM_003120 NM_011355 NM_001378898 NM_001378899 RefSeq (protein) NP_001074016 NP_003111 NP_035485 NP_001365827 NP_001365828 Location (UCSC) Chr 11: 47.35 – 47.38 Mb Chr 2: 90.91 – 90.95 Mb PubMed search Wikidata View/Edit Human View/Edit Mouse Transcription factor PU.1 is a protein that in ...
The most stable are 244 Pu with a half-life of 80.8 million years; 242 Pu with a half-life of 373,300 years; and 239 Pu with a half-life of 24,110 years; and 240 Pu with a half-life of 6,560 years. This element also has eight meta states ; all have half-lives of less than one second.
Polyurethane synthesis, wherein the urethane groups −NH−(C=O)−O− link the molecular units A kitchen sponge made of polyurethane foam . Polyurethane (/ ˌ p ɒ l i ˈ jʊər ə ˌ θ eɪ n,-j ʊəˈr ɛ θ eɪ n /; [1] often abbreviated PUR and PU) refers to a class of polymers composed of organic units joined by carbamate (urethane) links.
Plutonium-241 (241 Pu or Pu-241) is an isotope of plutonium formed when plutonium-240 captures a neutron.Like some other plutonium isotopes (especially 239 Pu), 241 Pu is fissile, with a neutron absorption cross section about one-third greater than that of 239 Pu, and a similar probability of fissioning on neutron absorption, around 73%.
From Emperor to Citizen: The Autobiography of Aisin-Gioro Pu Yi (Chinese: 我的前半生, literally translated as The First Half of My Life) is the autobiography of Puyi, the last emperor of China. The Bernardo Bertolucci film The Last Emperor is based on this book.
The PU-21 (Russian: ПУ-21 Пулемёт с унифицированной подачей) is a 5.45×39mm machine gun designed by V. M. Kalashnikov and M. E. Dragunov between 1972 and 1977. The PU-21 can be fed from either a 45-round magazine or a 200-round belt. The PU-21's sights are graduated to distance of 1,000 metres (3,300 ft). [1] [2]