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He ends the chapter by discussing increasing precision in the measurement of the fine-structure constant — the earliest measurements pegged it at 1/136, but over time it was refined to 1/137.0359. Kean discusses these topics to emphasize the measures to be precise people have taken.
The majority of hydrogen peroxide solutions are 3% hydrogen peroxide. [1] This enables the solution to break down any proteins that coat the contacts after a long period of use. Hydrogen peroxide is always used alongside a neutralizing product. [ 2 ]
Quizlet is a multi-national American company that provides tools for studying and learning. [1] Quizlet was founded in October 2005 by Andrew Sutherland, who at the time was a 15-year old student, [ 2 ] and released to the public in January 2007. [ 3 ]
Forward pipetting is a technique to dispense a measured quantity of liquid by means of air displacement pipette. The technique is mainly recommended for aqueous solutions, such as buffers, or diluted acids or alkalis. In case of solutions with a high viscosity or a tendency to foam, reverse pipetting is more suitable.
The following index is provided as an overview of and topical guide to science: Links to articles and redirects to sections of articles which provide information on each topic are listed with a short description of the topic. When there is more than one article with information on a topic, the most relevant is usually listed, and it may be ...
Nonoxynol-9 is a common ingredient of most vaginal and anal lubricants due to its spermicidal properties. A 2004 study found that over a six-month period, the typical-use failure rates for five nonoxynol-9 vaginal contraceptives (film, suppository, and gels at three different concentrations) ranged from 10% to 20%.
Writing out numbers as words and numerals ("dispense #30 (thirty)") as in a bank draft or cheque. The use of the apothecaries' system or avoirdupois units and symbols of measure – pints ( O ), ounces ( ℥ ), drams ( ℨ ), scruples ( ℈ ), grains ( gr ), and minims ( ♏︎ ) – is discouraged given the potential for confusion.
XT Anesthesia Workstation, an automated dispensing cabinet used in hospital operating rooms. Automated dispensing is a pharmacy practice in which a device dispenses medications and fills prescriptions. ADCs, which can handle many different medications, are available from a number of manufacturers such as BD, ARxIUM, and Omnicell.