单词 | ppi | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
释义 | PPIPPIppiPPIppi(1) (Points Per Inch, Pulses Per Inch) The measurement of mouse movement.(2) (PPI) (Perceptive Pixel Inc.) See PixelSense. (3) (Pixels Per Inch) The measurement of the resolution of a monitor or scanner. Earlier CRT screens measured around 96 ppi, while LCD screens on laptop and desktop computers today range from about 100 to 140 ppi. In order to display more information, tiny smartphone screens require higher resolution. For example, in 2007, Apple introduced the iPhone with 160 ppi. Three years later, the iPhone 4's Retina Display screen was 326 ppi. The HTC One smartphone came out in 2013 at 468 ppi. Pixels and Dots Pixels per inch (ppi) are the number of full pixels per inch on a screen, and each pixel on a color display comprises three or more subpixels, with some exceptions (see PenTile). Dots per inch (dpi) rates printer resolution, and the dots refer to the smallest element that is printed (see dpi). How Pixels and Dots Relate A digital image is measured in pixels. For example, a 600x300 pixel image has 600 horizontal pixels and 300 vertical. The way the image appears on screen and paper is determined by the ppi and dpi. On a 100 ppi screen, the image would be 6" by 3". Printed at 300 dpi, the standard for quality printing, the paper image would be 2" by 1". An 8x10" high-quality print would therefore require an image with a minimum resolution of 2400x3000 pixels. To view it end to end on screen, it has to be scaled smaller, because most monitors are not large enough. See dot pitch and RGB.
PPiPPiPPIAbbreviation for:paired-pulse inhibition partial permanent impairment Partnerhip for Policy Implementation Patient and Public Involvement patient package insert peptidyl prolyl isomerase phosphoinositide portal perfusion index postpartum interval preproinsulin protein-protein interaction proton-pump inhibitor purified porcine insulin inhibitor(in-hib'it-or)ACE inhibitoracetylcholinesterase inhibitorCholinesterase inhibitor.alpha–2 plasmin inhibitorAlpha–2 antiplasmin.alpha-glucosidase inhibitor5-alpha reductase inhibitorangiotensin-converting enzyme inhibitorAbbreviation: ACE inhibitor.aromatase inhibitorattachment inhibitorEntry inhibitor.bone resorption inhibitorcholesteryl ester transfer protein inhibitorcholinesterase inhibitorAbbreviation: ChEIcompetitive inhibitorcyclooxygenase inhibitordipeptidyl peptidase-4 inhibitorAbbreviation: DPP-4 inhibitorGliptin. direct thrombin inhibitorAbbreviation: DPDPP-4 inhibitordipeptidyl peptidase-4 inhibitor.dual reuptake inhibitorentry inhibitorglycoprotein IIB/IIIa receptor inhibitorHMG CoA enzyme inhibitorStatin.integrase inhibitormatrix metalloproteinase inhibitormetalloprotease inhibitorMetalloproteinase inhibitor.metalloproteinase inhibitormonoamine oxidase inhibitorAbbreviation: MAOICAUTION!MAOIs may have unfavorable drug-drug interactions with many anesthetics and should be discontinued approximately two weeks before surgery.neuraminidase inhibitornonnucleoside analog reverse transcriptase inhibitorAbbreviation: NNRTInucleoside reverse transcriptase inhibitorAbbreviation: NRTIphosphodiesterase inhibitorAbbreviation: PDE inhibitorprostaglandin inhibitorprotease inhibitorproton pump inhibitorAbbreviation: PPIreverse transcriptase inhibitorAbbreviation: RTIselective serotonin reuptake inhibitorAbbreviation: SSRICAUTION!The use of SSRIs in the treatment of depression may sometimes be associated with an increased risk of suicide, esp. during the initiation of treatment. The risk is greatest among children and adolescents. All patients who begin treatment with SSRIs should be monitored closely for evidence that they intend to harm themselves.serine protease inhibitorAbbreviation: serpinserotonin and norepinephrine reuptake inhibitorAbbreviation: SNRItumor necrosis factor alpha inhibitorCAUTION!Because these drugs are immunologically active, patients with active infection or those with chronic infections such as tuberculosis should not use them. These agents also sometimes increase the risk of cancers and have rarely been associated with demyelinating diseases of the central nervous system such as multiple sclerosis.vasopeptidase inhibitorproton pump inhibitorAbbreviation: PPIPPI
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