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This is a category of articles relating to free software for making or viewing Portable Document Format (PDF) documents. That is, software which can be freely used, copied, studied, modified, and redistributed by everyone that obtains a copy. Typically, this means software which is distributed with a free software license, and whose source code ...
PDF import via software, or extensions. Apache PDFBox: Apache License 2.0: Yes Yes Unix Yes Converts PDF to other file format (text, images, html). Collabora Online: MPLv2.0: Yes Yes Yes Android, iOS, iPadOS, ChromeOS and Online Yes Yes Import from PDF, export as PDF including PDF/A. Foxit Software: Proprietary: Yes Yes Yes Android, iOS, iPadOS ...
Surface plasmon resonance (SPR) Surface plasmon resonance (SPR) is a phenomenon that occurs where electrons in a thin metal sheet become excited by light that is directed to the sheet with a particular angle of incidence, and then travel parallel to the sheet. Assuming a constant light source wavelength and that the metal sheet is thin, the ...
The concept of classical SPR has been since 1968 but the SPR imaging technique was introduced in 1988 by Rothenhäusler and Knoll. [16] Capturing a high resolution image of low contrast samples for optical measuring techniques is a near impossible task until the introduction of SPRM technique that came into existence in the year 1988.
Software Productivity Research, a software benchmarking company; Former São Paulo Railway Company, Brazil; Spirit AeroSystems, Wichita, Kansas, US, NYSE symbol; South Persia Rifles, British-commanded unit 1916-1921; Suomen Punainen Risti, Finnish Red Cross; Suruhanjaya Pilihan Raya Malaysia (Election Commission of Malaysia)
The Free Software Foundation was founded in 1985 as a non-profit corporation supporting free software development. It continued existing GNU projects such as the sale of manuals and tapes, and employed developers of the free software system. [13] Since then, it has continued these activities, as well as advocating for the free software movement.
Fldigi (short for Fast light digital) [4] is a free and open-source program which allows an ordinary computer's sound card to be used as a simple two-way data modem.The software is mostly used by amateur radio operators who connect the microphone and headphone connections of an amateur radio SSB or FM transceiver to the computer's headphone and microphone connections, respectively.
The Pindad SPR (abbreviation from Indonesian: Senapan Penembak Runduk, Sniper Rifle) is a family of sniper rifles made by Pindad. The gun allows the shooter to adjust the height of the position and stability by regulating the bipod of the rifle located on the bottom front of the handguard.