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Use of Keywords for Searching
Enter one or more keywords in the Search for box to form a Search Query. Use British or American spelling. The search is not case sensitive. Keywords could be random, or logically linked into Keyword Phrases like an adjective and a noun.
| Examples: |
bolts
electric resistivity
polyethylene mustard |
Note: Certain common keywords (e.g., a, the) and non-alphanumeric characters (e.g., %) are ignored. |
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Matching Keywords NEXT to Each Other
To match keywords NEXT to each other in the specified order or in NEXT Proximity, enclose them in double quotes. NEXT Proximity works well for Keyword Phrases. Avoid using it for random keywords.
| Example: |
"polyphenylene oxide" |
Note: In interactive tables, keywords enclosed in double quotes must match in the same cell. |
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Matching Keywords NEAR Each Other
To match keywords within approximately 5 to 10 words in any order or in NEAR Proximity, do not enclose them in double quotes. NEAR Proximity works well for random keywords and for long Keyword Phrases.
| Example: |
polyethylene mustard |
Note: In interactive tables, keywords not enclosed in double quotes match anywhere in the same row. |
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Linking Keywords with Booleans AND, OR, NOT
Use AND to link keywords and Keyword Phrases that you want to match anywhere on the same page of text (PDF or HTML) or in the same row of interactive table. Linking keywords with AND will normally produce more hits than using NEXT or NEAR Proximity.
| Example: |
"acetic acid" AND "specific heat" |
Use OR to link keywords and Keyword Phrases that you want to match independently on any page of text (PDF or HTML) or in any row of interactive table. OR is useful to link interchangeable or similar keywords to get more hits. Linking keywords with OR will normally produce more hits than using AND.
| Example: |
stainless OR "corrosion resistant" steel |
Knovel search executes NOT as AND NOT. Use NOT before keywords or Keyword Phrases that you do not want to be on the same page of text (PDF or HTML) or in the same row of interactive table with other specified keywords.
| Example: |
polyethylene NOT polyester |
Note: Use of NOT in the beginning of Search Query is not supported. |
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Use of More Than One Boolean
You can use as many Booleans in the same Search Query as you want. Knovel search executes OR first and then NOT and AND.
| Example: |
polypropylene OR polyethylene AND "tensile strength" |
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Use of Parentheses in Search Query
Use parentheses, if you use different Booleans in the same Search Query and want to force a non-default order of execution. A query expression enclosed in parentheses is executed first. You can use more than one parenthetic expression in the same Search Query. Nest parenthetic expressions to force an order in their execution. The inner most expressions are executed first.
| Example: |
(polypropylene OR (polyethylene NOT polyester*)) AND "tensile strength" |
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Hyphenated Keywords
If you are not sure whether a keyword should be hyphenated, concatenate the portions that could be hyphenated. This will generally produce better results than replacing the hyphen with a space.
| Examples: |
ultra-high molecular weight
ultrahigh molecular weight |
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Use of Wildcards
Use asterisk (*) wildcards exclusively for right truncation of keywords. Asterisk wildcards are not allowed in keywords enclosed in double quotes, i.e., in Keyword Phrases with NEXT Proximity. No other wildcards are allowed (e.g., a question mark (?) wildcard for a single character is not a valid wildcard).
| Example: |
chemical resist* |
Note: Avoid truncating keywords all the way, leaving just one or two initial characters followed by an asterisk, e.g., c*. Keywords truncated this way could result in too many irrelevant hits. |
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Plural vs. Singular Form of Keywords
Single keyword Search Queries will produce the same number of hits for the keyword in plural or singular form. For multiple keyword Search Queries, use the wildcard.
| Examples: |
resin
resins
unsaturated polyester resin* |
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Searching on Title Name, Author, etc.
To find a title or a chapter in a title quickly, select Title, ISBN, Author or Table of Contents from the Search in dropdown and search in these fields using keywords and all other features of Knovel search. |
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Limiting Search to Subject Area
To limit your search to titles in the particular Subject Area, select desired Subject Area from the Subject Area dropdown and search using keywords and all other features of Knovel search. Alternatively, you can search on this Subject Area page. |
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Limiting Search to Your Subscription
To limit your search to titles in your subscription, select My Subscription toggle button and search using keywords and all other features of Knovel search. |
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