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A PNG file contains a single image in an extensible structure of chunks, encoding the basic pixels and other information such as textual comments and integrity checks documented in RFC 2083. [ 7] PNG files have the ".png" file extension and the "image/png" MIME media type. [ 8] PNG was published as an informational RFC 2083 in March 1997 and as ...
Science is a strict systematic discipline that builds and organises knowledge in the form of testable hypotheses and predictions about the world. [1] [2] Modern science is typically divided into three major branches: [3] the natural sciences (e.g., physics, chemistry, and biology), which study the physical world; the social sciences (e.g., economics, psychology, and sociology), which study ...
Papua New Guinea, [ note 1] officially the Independent State of Papua New Guinea, [ 13][ note 2] is a country in Oceania that comprises the eastern half of the island of New Guinea and its offshore islands in Melanesia (a region of the southwestern Pacific Ocean north of Australia ).
Website. www .nsf .gov. Logo used from 1999 to 2009. The U.S. National Science Foundation ( NSF) is an independent agency of the United States federal government that supports fundamental research and education in all the non-medical fields of science and engineering. Its medical counterpart is the National Institutes of Health.
Wikipedia began as a complementary project for Nupedia, a free online English-language encyclopedia project whose articles were written by experts and reviewed under a formal process. [ 20] It was founded on March 9, 2000, under the ownership of Bomis, a web portal company.
The asterisk * marks symmetries with more than one chiral form. When C 76 or C 82 crystals are grown from toluene solution they have a monoclinic symmetry. The crystal structure contains toluene molecules packed between the spheres of the fullerene. However, evaporation of the solvent from C 76 transforms it into a face-centered cubic form. [54]
Open access. Open access logo, originally designed by Public Library of Science. A PhD Comics introduction to open access. Open access ( OA) is a set of principles and a range of practices through which nominally copyrightable publications are delivered to readers free of access charges or other barriers. [ 1]
IMRAD. In scientific writing, IMRAD or IMRaD ( / ˈɪmræd /) ( Introduction, Methods, Results, and Discussion) [ 1] is a common organizational structure (a document format). IMRaD is the most prominent norm for the structure of a scientific journal article of the original research type. [ 2]