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  2. Critical care nursing - Wikipedia

    en.wikipedia.org/wiki/Critical_care_nursing

    All nurses in the US are registered as nurses without a specialty. The CCRN is an example of a post registration specialty certification in critical care. There are also variants of critical care certification test that the AACN offers to allow nurses to certify in progressive care (PCCN), cardiac medicine (CMC) and cardiac surgery (CSC).

  3. Process control network - Wikipedia

    en.wikipedia.org/wiki/Process_control_network

    Many early PCNs were serial based, using low level standards such as EIA RS-422 and EIA RS-485 with proprietary protocols on top. One of the de facto standards (which is now becoming an open standard) is Modbus, originally from Modicon.

  4. Nursing credentials and certifications - Wikipedia

    en.wikipedia.org/wiki/Nursing_credentials_and...

    Nursing credentials and certifications are the various credentials and certifications that a person must have to practice nursing legally. Nurses' postnominal letters (abbreviations listed after the name) reflect their credentials—that is, their achievements in nursing education , licensure , certification , and fellowship .

  5. File:US Citizenship test questions - English.pdf - Wikipedia

    en.wikipedia.org/wiki/File:US_Citizenship_test...

    English: This is the official list of questions (and expected answers) that can be asked on the civics portion of the American naturalization test, revised in January of 2019. While most of these questions are supplied with answers, the ones that ask about specific members of the American government are not.

  6. Polychlorinated naphthalene - Wikipedia

    en.wikipedia.org/wiki/Polychlorinated_naphthalene

    Structure of 2,3,6,7-Tetrachloronaphthalene. Polychlorinated naphthalene (PCN) are the products obtained upon treatment of naphthalene with chlorine.The generic chemical formula is C 10 H 8−(m+n) Cl (m+n).

  7. Differential Manchester encoding - Wikipedia

    en.wikipedia.org/wiki/Differential_Manchester...

    Differential Manchester encoding (DM) is a line code in digital frequency modulation in which data and clock signals are combined to form a single two-level self-synchronizing data stream.