CHEMICAL ENGINEERING VOCABULARYAcronym/Abbreviation referral: see arbitrary units Acronym/Abbreviation referral: see accounts payable Acronym/Abbreviation referral: see accounts receivab
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CHEMICAL ENGINEERING VOCABULARY
Trang 3Chemical Engineering Vocabulary
1 st edition
© 2016 Maximilian Lackner & bookboon.com
ISBN 978-87-403-1427-4
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Acronym/Abbreviation referral: see arbitrary units
Acronym/Abbreviation referral: see accounts payable
Acronym/Abbreviation referral: see accounts receivable
Calcium carbonate can be used as abrasive, for example as “polishing agent” in toothpaste
In contrast to absorption, the absorbance A is directly proportional to the concentration of the absorbing species A is calculated as ln (l0/l) with l0 being the initial and l the transmitted light intensity, respectively
he absorption of light is often called attenuation and must not be mixed
up with adsorption, an efect at the surface of a solid or liquid Absorption
of liquids and gases means that they difuse into a liquid or solid
An abstract is a summary of a scientiic piece of work
Acronym/Abbreviation referral: see alternating current
he Royal Society, which was founded in 1660, was the irst academic society
In SI units, acceleration is measured in meters/second2
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After precipitation, the thallium had to be separated from the accompanying elements TI (atomic number 81) is highly toxic and can be found in rat poisons and insecticides
Working in accounting requires paying attention to details
Acronym: A/P
he controller proposed to delay payment of accounts payable in order to have enough liquidity for another transaction
Acronym: A/R
he young accountant was working with accounts receivable
Accrual is an accounting concept to allocate expenses and revenue to the correct time Here is an example: On December 20, 2015, a company delivered a product to a customer who was expected to pay 30 days later Still, the income was disclosed in the income statement of 2015, although payment would only be received in the upcoming iscal year
he melting point of acetic acid is 16.5°C he formula of this organic
An achromatic lens is used when color abberation needs to be avoided
he MSDS (material safety data sheet) describes wollastonite as an acicular material
A superacid is an acid that has a greater acidity than 100% sulfuric acid, such as luorosulfuric acid (FSO3H)
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In the rubber industry, acid scavengers are used to neutralize traces of halogen anions (halogenides) which are released during aging and which would otherwise prematurely destroy material performance Lead oxides and lead salts are very efective acid scavengers in this application, however, they are being phased out due to environmental concerns
he acid value is an important quality parameter of biodiesel
Acid-fast organisms are diicult to characterize using Gram staining
he chemist acidiied the sample by adding a few drops of prussic acid
he apple had an acidulous taste
Acme threads can be found in machines that have to bear high loads such
as a lathe or a vice
he acrid smoke from the wildire could be smelled 10 km away
he action level of formaldehyde was determined as 0.5 ppm
action limit, action level (pharm.)
he action limit of estradiol, a steroid that is derived from cholesterol, was found to be 0.04 µg/l in pigs
he action of the drug was not yet fully understood
activated carbon
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he term “activation energy» was introduced in 1889 by Arrhenius A catalyst changes the transition state to lower the activation energy A biological catalyst is called enzyme
Generic medicinal products contain the same active compounds as the original products
Acronym: AI
A drug is normally not administered as a pure substance: he typical dosage form of a drug is a mixture of the active ingredient (AI) and at least one excipient, which is pharmaceutically inert
ingredient
Acronym/Abbreviation referral: see active ingredient Acronym: API
Acronym: API, AI
Recent research results suggest that carnosic acid, the active substance in the herb rosemary is neuroprotective
actuating drive,
servo drive
A pneumatic actuator converts energy, typically in the form of compressed air, into motion, which can be rotary or linear
he word angle comes from the Latin word angulus, which means “corner”
An acute angle measures < 90° (right angle)
A common addictive drug is nicotine It constitutes approximately 0.6–3.0%
of dry weight of tobacco 1 cigarette yields approx 1 mg of absorbed nicotine ((S)-3-(1- Methyl-2-pyrrolidinyl) pyridine, C10H14N2)
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Plastics often contain slip agents as additives
he charged particles adhered to the surface
he company is specialized in the production of adhesives
Adhesive tape is a convenient tool to ix loose cables
In an adiabatic process, no heat is transferred between the working luid and the surroundings he other extreme case is an isothermal process, where heat transfer to the surroundings causes the temperature to remain constant
In a severely obese person, excess adipose tissue hanging downward from the abdomen is referred to as a panniculus (or pannus)
he researcher borrowed a beaker from the adjacent laboratory
he color of the injection moulded part had to be adjusted
adjusting butterly valve (chem eng.)
he adjusting butterly valve was pneumatically actuated
In immunology, an adjuvant, e.g aluminium salts, is an agent that increases the response to a vaccine
he medicine was administered orally