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  2. R-407C - Wikipedia

    en.wikipedia.org/wiki/R-407C

    R-407C is a mixture of hydrofluorocarbons used as a refrigerant. It is a zeotropic blend of difluoromethane (R-32), pentafluoroethane (R-125), and 1,1,1,2-tetrafluoroethane (R-134a). Difluoromethane serves to provide the heat capacity, pentafluoroethane decreases flammability, tetrafluoroethane reduces pressure. [ 1 ]

  3. R-407A - Wikipedia

    en.wikipedia.org/wiki/R-407A

    R-407A is a mixture of gasses used as a refrigerant. It is a zeotropic blend of difluoromethane (HFC-32), pentafluoroethane (HFC-125) and 1,1,1,2-tetrafluoroethane (HFC-134a). [1] R-407A was developed as a close match to R-22 's capacities and flow rates, making it well suited as an energy efficient retrofit for R-22 in medium and low ...

  4. List of refrigerants - Wikipedia

    en.wikipedia.org/wiki/List_of_refrigerants

    Main page; Contents; Current events; Random article; About Wikipedia; Contact us; Help; Learn to edit; Community portal; Recent changes; Upload file

  5. List of abbreviations used in medical prescriptions - Wikipedia

    en.wikipedia.org/wiki/List_of_abbreviations_used...

    This is a list of abbreviations used in medical prescriptions, including hospital orders (the patient-directed part of which is referred to as sig codes). This list does not include abbreviations for pharmaceuticals or drug name suffixes such as CD, CR, ER, XT (See Time release technology § List of abbreviations for those).

  6. Prothrombin time - Wikipedia

    en.wikipedia.org/wiki/Prothrombin_time

    The prothrombin time (PT) – along with its derived measures of prothrombin ratio (PR) and international normalized ratio (INR) – is an assay for evaluating the extrinsic pathway and common pathway of coagulation. This blood test is also called protime INR and PT/INR. They are used to determine the clotting tendency of blood, in such things ...

  7. Abbrev. Meaning Latin (or Neo-Latin) origin ; a.c. before meals: ante cibum a.d., ad, AD right ear auris dextra a.m., am, AM morning: ante meridiem: nocte every night ...

  8. List of medical abbreviations: P - Wikipedia

    en.wikipedia.org/wiki/List_of_medical...

    platelet-activating factor. paroxysmal atrial fibrillation (meaning intermittent AF) PAH. pulmonary arterial hypertension. phenylalanine hydroxylase. PAI-1. plasminogen activator inhibitor-1. PAL. posterior axillary line.

  9. Platinum–iridium alloy - Wikipedia

    en.wikipedia.org/wiki/Platinum–iridium_alloy

    Platinum–iridium alloy. The international prototype of the kilogram (IPK) is an artifact standard of platinum–iridium alloy that was defined as having a mass of exactly one kilogram. Platinum–iridium alloys are alloys of the platinum group precious metals platinum and iridium. Typical alloy proportions are 90:10 or 70:30 (Pt:Ir).

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