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Isotopes of gadolinium (64Gd) Naturally occurring gadolinium (64 Gd) is composed of 6 stable isotopes, 154 Gd, 155 Gd, 156 Gd, 157 Gd, 158 Gd and 160 Gd, and 1 radioisotope, 152 Gd, with 158 Gd being the most abundant (24.84% natural abundance). The predicted double beta decay of 160 Gd has never been observed; only a lower limit on its half ...
Gadolinium is a chemical element; it has symbol Gd and atomic number 64. Gadolinium is a silvery-white metal when oxidation is removed. It is a malleable and ductile rare-earth element. Gadolinium reacts with atmospheric oxygen or moisture slowly to form a black coating. Gadolinium below its Curie point of 20 °C (68 °F) is ferromagnetic, with ...
Gangster Disciples. The Gangster Disciple Nation (often abbreviated as the GD 's; formally, GDN), also known as Growth & Development, is an African American street and prison gang founded by former rivals David Barksdale and Larry Hoover; in 1968, the two came together to form the Black Gangster Disciple Nation (BGDN).
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Gadolinium (III) oxide (archaically gadolinia) is an inorganic compound with the formula Gd 2 O 3. It is one of the most commonly available forms of the rare-earth element gadolinium, derivatives, of which are potential contrast agents for magnetic resonance imaging. [2]
Professional ratings. Without a Net is the eighth live album by the Grateful Dead (their twenty-first overall). It compiles performances from October 1989 to April 1990, and was released in September 1990. The album simulates the progression of an actual Grateful Dead concert and was certified Gold by the RIAA in November 1990. [2]
Phebe Novakovic is an American businesswoman and former intelligence officer. She serves as the chairwoman and chief executive officer of General Dynamics. She was ranked 21st on Fortune's list of Most Powerful Women in 2023. [2] She was also listed as the world's 29th most powerful woman by Forbes. [3]
Gadolinium oxysulfide is a promising luminescent host material, because of its high density (7.32 g/cm 3) and high effective atomic number of Gd. These characteristics lead to a high interaction probability for X-ray radiation. Several synthesis routes have been developed for processing Gd 2 O 2 S phosphors, including: solid state reaction ...