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pH

Phil B. Fontanarosa and Stacy Christiansen

in AMA Manual of Style: A Guide for Authors and Editors (10th edition)

Print Publication Year: 
2007
Published Online: 
2009
DOI: 
10.1093/jama/9780195176339.022.566
Item type: 
section
Although SI nomenclature could be used to express values of hydrogen ion concentration (nmol/L), the pH scale (1 14) is used. ...

Plurals

Phil B. Fontanarosa and Stacy Christiansen

in AMA Manual of Style: A Guide for Authors and Editors (10th edition)

Print Publication Year: 
2007
Published Online: 
2009
DOI: 
10.1093/jama/9780195176339.022.548
Item type: 
section
The same symbol is used for single and multiple quantities. Unit symbols are not expressed in the plural form. ...

Prefixes

Phil B. Fontanarosa and Stacy Christiansen

in AMA Manual of Style: A Guide for Authors and Editors (10th edition)

Print Publication Year: 
2007
Published Online: 
2009
DOI: 
10.1093/jama/9780195176339.022.542
Item type: 
section
Prefixes are combined with base units and derived units to form multiples of SI units. The factors designated by prefixes are powers of 10, and most prefixes involve exponents that are simple multiples ... More

Pressure

Phil B. Fontanarosa and Stacy Christiansen

in AMA Manual of Style: A Guide for Authors and Editors (10th edition)

Print Publication Year: 
2007
Published Online: 
2009
DOI: 
10.1093/jama/9780195176339.022.565
Item type: 
section
Blood pressure and intraocular pressure are reported in millimeters of mercury (mm Hg); cerebrospinal fluid pressure is reported as centimeters of water (cm H2O). The pascal (newton per square meter [N/m2]) ... More

Products and Quotients of Unit Symbols

Phil B. Fontanarosa and Stacy Christiansen

in AMA Manual of Style: A Guide for Authors and Editors (10th edition)

Print Publication Year: 
2007
Published Online: 
2009
DOI: 
10.1093/jama/9780195176339.022.545
Item type: 
section
The product of 2 or more SI units should be indicated by a space between them or by a raised multiplication dot. The multiplication dot must be positioned properly to distinguish it from a decimal point, ... More

Punctuation

Phil B. Fontanarosa and Stacy Christiansen

in AMA Manual of Style: A Guide for Authors and Editors (10th edition)

Print Publication Year: 
2007
Published Online: 
2009
DOI: 
10.1093/jama/9780195176339.022.552
Item type: 
section
Symbols or abbreviations of units of measure are not followed by a period, unless the symbol occurs at the end of a sentence.The patient’s weight was 80 kg [not 80 kg.] and had increased by 10%. ...

Radiation

Phil B. Fontanarosa and Stacy Christiansen

in AMA Manual of Style: A Guide for Authors and Editors (10th edition)

Print Publication Year: 
2007
Published Online: 
2009
DOI: 
10.1093/jama/9780195176339.022.571
Item type: 
section
UPDATE: We will discontinue using quotation marks to identify parts of an article, but retain the capitalization; eg, This is discussed in the Methods section (not the “Methods” section). This change ... More

SI Units

Phil B. Fontanarosa and Stacy Christiansen

in AMA Manual of Style: A Guide for Authors and Editors (10th edition)

Print Publication Year: 
2007
Published Online: 
2009
DOI: 
10.1093/jama/9780195176339.021.256
Item type: 
section
The International System of Units (Le Système International d'Unités or SI) represents a modified version of the metric system that has been established by international agreement and currently is the ... More

Solutions and Concentration

Phil B. Fontanarosa and Stacy Christiansen

in AMA Manual of Style: A Guide for Authors and Editors (10th edition)

Print Publication Year: 
2007
Published Online: 
2009
DOI: 
10.1093/jama/9780195176339.022.567
Item type: 
section
A molar solution contains 1 mol (1 g molecular weight) of solute in 1 L of solution. The SI style for reporting molar solutions is mol/L; for solutions with millimolar concentrations, mmol/L is used; ... More

Spacing

Phil B. Fontanarosa and Stacy Christiansen

in AMA Manual of Style: A Guide for Authors and Editors (10th edition)

Print Publication Year: 
2007
Published Online: 
2009
DOI: 
10.1093/jama/9780195176339.022.554
Item type: 
section
With the exception of the percent sign, the degree sign (for temperature and angles), and normal and molar solutions (see , Conventional Units and SI Units in JAMA and the Archives Journals, Solutions ... More

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