| PPRF | Pontine Paramedian Reticular Formation |
|---|---|
| PPRF | paramedian pontine reticular formation; postpartum renal failure |
| PPROM | preterm premature rupture of fetal membranes |
| PPRP | polyadenosine diphosphate-ribose polymerase |
| PPRWP | poor precordial R-wave progression |
| PPS | Personal Preference Scale; physician, patient and society [course]; polyvalent pneumococcal polysaccharide; popliteal pterygium syndrome; postpartum sterilization; postperfusion syndrome; postpericardiotomy syndrome; postpolio syndrome; postpump syndrome; primary acquired preleukemic syndrome; prospective payment system; prospective pricing system; protein plasma substitute; pulse per second |
| PPSH | pseudovaginal perineoscrotal hypospadias |
| PPT | parietal pleural tissue; partial prothrombin time; peak-to-peak threshold; Pfeiffer-Palm-Teller [syndrome]; plant protease test; polypurine tract; postpartum thyroiditis; pulmonary platelet trapping; pulmonary physical therapy |
| ppt | parts per trillion; precipitation, precipitate; prepared |
| pptd | precipitated |
| PPD | Postpartum depression |
|---|---|
| PPD | Preprodynorphin |
| PPD | Probing Pocket Depth |
| PPD | Purified Protein Derivate |
| PPD | Purified Protein Derivative |
| PPD | Purified Protein Derivative of Tuberculin |
| PPD | proximal pars distalis |
| PPDK | Pyruvate orthophosphate dikinase |
| PPDK | Pyruvate phosphate dikinase |
| PPE | Personal protective equipment |
| ppm |
The number of "parts" by weight of a substance per million parts of water. This unit is commonly used to represent pollutant concentrations. Large concentrations are expressed in percentages.
출처: www.ec.gc.ca/water/en/info/gloss/e_gloss.htm
|
|---|---|
| ppb |
Units typically used in measuring the number of "parts" by weight of a substance in water; commonly used in representing pollutant concentrations.
출처: www.apsu.edu/wet/whatis.html
|
| PP |
a light, highly resistant plastic resin used in packaging, coating, pipes, and tubes.
출처: www.deq.state.or.us/wmc/solwaste/cwrc/glossary/glo...
|
| ppb |
Parts Per Billion. Refers to the concentration of a substance in a sample. For example, a concentration of five parts per billion (5 ppb) of benzene means there are five molecules of benzene present in the sample for every 999,999,995 molecules of other substances. The metric equivalents are:
출처: www.deq.state.or.us/wmc/cleanup/glossary.htm
|
| ppm |
Parts Per Million. Refers to the concentration of a substance in a sample. For example, a concentration of five parts per million (5 ppm) of benzene means there are five molecules of benzene present in the sample for every 999,995 molecules of other substances. The metric equivalents are:
출처: www.deq.state.or.us/wmc/cleanup/glossary.htm
|