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A PDF file is organized using ASCII characters, except for certain elements that may have binary content. The file starts with a header containing a magic number (as a readable string) and the version of the format, for example %PDF-1.7. The format is a subset of a COS ("Carousel" Object Structure) format. [24]
file extension (usually 3 letters). This is widely used, but fragile as common suffixes such as .mol and .dat are used by many systems, including non-chemical ones. self-describing files where the format information is included in the file. Examples are CIF and CML. chemical/MIME type added by a chemically aware server.
A pipe clamp is a type of clamp often employed in piping, woodworking, and cabinet shops. Pipe clamps for woodwork or cabinet shops are usually composed of commercially manufactured clamp heads or "jaws" and a length of common threaded pipe. [1] [2] The capacity of the clamp is determined by the length of the pipe used.
This file contains additional information, probably added from the digital camera or scanner used to create or digitize it. If the file has been modified from its original state, some details may not fully reflect the modified file.
Open Babel is a free chemical informatics software designed to facilitate the conversion of Chemical file formats and manage molecular data. [3] It serves as a chemical expert system, widely used in fields such as cheminformatics, molecular modelling, and computational chemistry. Open Babel provides both a comprehensive library and command-line ...
A structural pipe fitting, also known as a slip on pipe fitting, clamp or pipe clamp is used to build structures such as handrails, guardrails, and other types of pipe or tubular structure. They can also be used to build furniture and theatrical riggings. The fittings slip on the pipe and are usually locked down with a set screw.
chemical file format An MDL Molfile is a file format for holding information about the atoms, bonds, connectivity and coordinates of a molecule. The molfile consists of some header information, the Connection Table (CT) containing atom info, then bond connections and types, followed by sections for more complex information.
A pipeclay triangle is a piece of laboratory apparatus that is used to support a crucible being heated by a Bunsen burner or other heat source. It is made of wires strung in an equilateral triangle on which are strung hollow ceramic, normally fire clay, tubes.