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1,5-Diazabicyclo[4.3.0]non-5-ene (DBN) is a chemical compound with the formula C 7 H 12 N 2. [1] It is an amidine base used in organic synthesis. A related compound with related functions is 1,8-diazabicyclo[5.4.0]undec-7-ene (DBU). The relatively complex nature of the formal names for DBU and DBN (hence the common use of acronyms) reflects the ...
[12] In metallurgy, precipitation from a solid solution is also a way to strengthen alloys. Precipitation of ceramic phases in metallic alloys such as zirconium hydrides in zircaloy cladding of nuclear fuel pins can also render metallic alloys brittle and lead to their mechanical failure.
Science is a systematic discipline that builds and organises knowledge in the form of testable hypotheses and predictions about the universe. [1] [2] Modern science is typically divided into two or three major branches: [3] the natural sciences (e.g., physics, chemistry, and biology), which study the physical world; and the social sciences (e.g., economics, psychology, and sociology), which ...
In April 2019, Fonda revealed she had a cancerous growth removed from her lower lip the previous year and pre-melanoma growths removed from her skin. [229] On September 2, 2022, Fonda announced that she has been diagnosed with non-Hodgkin lymphoma , and that she had begun chemotherapy treatments, expected to last six months. [ 231 ]
Golan and Globus misunderstood the concept of the character ("They thought it was like The Wolf Man", said director Joseph Zito) [12] and instructed writer Leslie Stevens, creator of The Outer Limits, to write a treatment reflecting their misconception. In Stevens' story, a corporate scientist intentionally subjects ID-badge photographer Peter ...
[11] [12] While the reliability of Wikipedia was frequently criticized in the 2000s, it has improved over time, receiving greater praise from the late 2010s onward [3] [13] [14] while becoming an important fact-checking site. [15] [16] Articles on breaking news are often accessed as sources for frequently updated information about those events ...
In 1991, Obama accepted a two-year position as Visiting Law and Government Fellow at the University of Chicago Law School to work on his first book. [64] [66] He then taught constitutional law at the University of Chicago Law School for twelve years, first as a lecturer from 1992 to 1996, and then as a senior lecturer from 1996 to 2004. [67]
Referring then to the previous example, it can be said that an actuality is when a plant does one of the activities that plants do. [ 55 ] For that for the sake of which ( to hou heneka ) a thing is, is its principle, and the becoming is for the sake of the end; and the actuality is the end, and it is for the sake of this that the potentiality ...