Tag: Verbs

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Syntax Usage Writing Tips

How to describe removal of protecting groups

In synthetic chemistry, protecting groups (also sometimes referred to as protective groups) are used to mask reactive functional groups, either to prevent them from being transformed by a given set of reaction conditions or to prevent them from interfering with a desired reaction.

Functional groups are usually described as being protected or deprotected, and protecting groups can be described as being installed, added, or put on and then as being removed or cleaved. (Note that these are not the only options.) Here are some typical examples of standard usage:

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Books Syntax Writing Tips

Served as

It’s difficult to find a book on scientific writing that doesn’t inveigh against weak verbs and nominalizations, and in previous posts, I’ve suggested ways to find them in your papers and eliminate them (here, here, and here). In this post, I want to point out another one: “served as,” as in

Metallic nickel served as a catalyst for the growth of carbon nanotubes.

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Sentence of the Week

Sentence of the Week, June 4, 2012

A series of weekly posts discussing revisions to a sentence from the scientific literature, highlighting various common grammar, syntax,  and usage issues—and ways to address them.

This week’s sentence is…

The sequence can readily be programmed; that is, it is possible to start from a common set of reagents and steer all levels of selectivity by varying only the order of reagents and/or the catalyst used.

Here’s one possible revision:

The sequence can readily be readily programmed; that is, it is possible to one can start from a common set of reagents and steercontrol all levels of selectivity by varying only the catalyst used or the order of in which the reagents and/or the catalyst usedare added, or both.

  • The adverb”readily” is now in its  natural location between the auxiliary verb (“can be”) and the main verb (“programmed”). For more on adverb placement, see Garner’s Modern American Usage, 3rd ed. (Oxford University Press, 2009), pp. 23-24.
  • Changing “it is possible to” to “one can” prevents readers from momentarily misreading the expletive “it” as a pronoun referring back to “the sequence.”
  • “Control…selectivity” is more idiomatic than “steer…selectivity.”
  • It’s  the addition of the reagents, not the reagents themselves, that has an order. With the extra words required to convey that information precisely, the sentence is easier to read when the  two variations (catalyst and order of reagent addition) are mentioned in the opposite order.
  • “And/or” is generally frowned upon as being imprecise. For example, see The ACS Style Guide, 3rd ed. (American Chemical Society, 2006), p. 56.

 

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Grammar Scientific Editing Syntax Uncategorized Usage

Compound adjectives formed with “adsorbed” and “immobilized”

Compound adjectives constructed from a noun plus the past participle of a verb are used frequently in English. Consider, for example, the sentence

The skiers raced down the snow-covered slopes.

Here, “snow-covered” is a compound adjective constructed from the noun “snow” and the past participle of the verb “to cover.” The compound describes the slopes; the slopes were covered. Covered with what? Covered with snow.

Here’s another:

The bishop placed the jewel-encrusted crown on the queen’s head.

“Jewel-encrusted” is a compound adjective modifying “crown”; the crown was encrusted with jewels.

Now let’s look a couple of analogous sentence from the scientific literature.

The surface-adsorbed nitrogen was quantified by means of a transient-response experiment.

Here, “surface-adsorbed” is a compound adjective constructed from the noun “surface” and the past participle of the verb “to adsorb.” The compound modifies “nitrogen; the nitrogen was adsorbed. Where was it adsorbed? On the surface.

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Grammar Syntax Usage Writing Tips

Dangling “followed”

Pick up any usage book and you’ll be sure find a discussion of dangling participles. Participles are formed from verbs but act as adjectives, and as such, they require an appropriate noun to modify. When they fail to meet this requirement, they are said to dangle. Here, I’m going to focus on a specific participle that often dangles in scientific writing: the past participle “followed.” Let’s look at some sentences.

Metal precursors were introduced into separate polymer blocks, followed by removal of the templates by pyrolysis.

What noun does “followed” modify—that is, what was followed by removal of the templates? Neither the nearest noun, “blocks,” nor the noun at the beginning of the sentence, “precursors,” will work. The author intended “followed” to modify a noun that doesn’t actually appear in the sentence, “introduction”:

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