The phrase "alter the length of" is correct and usable in written English.
You can use it when discussing changes to the size or duration of something, such as text, objects, or timeframes.
Example: "To improve readability, you may want to alter the length of the paragraphs in your report."
Alternatives: "change the size of" or "modify the duration of".
Most modern brass instruments are provided with valves or slides that alter the length of the tube.
Murphy MP, Uljon SN, Golde TE, Wang R. FAD-linked mutations in presenilin 1 alter the length of Abeta peptides derived from betaAPP transmembrane domain mutants.
Additional notes are obtained by using fingerholes to alter the length of the air column enclosed by the pipe or by vigorously overblowing, forcing the air column to vibrate in segments and sound overtones (harmonics) of the fundamental pitch.
A lip-vibrated instrument consisting of a cylindrical or conical tube produces only a fundamental note and, when vigorously overblown, its natural harmonic series (as, for the fundamental note C: c g c′ e′ g′ b♭′ [approximate pitch] c″ d″ e″, etc).. Most modern brass instruments are provided with valves or slides that alter the length of the tube.
Compared to later initiation of RRT, earlier RRT initiation in critically ill patients with AKI does not decrease mortality and long-term RRT dependence and does not alter the length of hospital stay.
We have also found that the tools for developing new synthesis protocols, such as the ability to view a live video feed of the reaction vessel and to alter the length of timed steps during the synthesis run, were effective in dealing with portions of new synthesis protocols where the optimal duration was not known a priori.
That way they can alter the lengths of lights by a few seconds to help improve traffic flow.
Changes in latitude not only alter the lengths of the dormant and active periods of reptiles but also affect their circadian rhythms because of the changes in the proportions of night to day.
BIM or C3 treatments increased the number of bundles, but did not alter the lengths of bundles containing fascin-1.
The microenvironment of the peptide ligands was controlled by altering the length of the surrounding oligo ethylene glycol) groups on the monolayer.
Upon altering the length of the alkyl substituents on the triazolium cation from dodecyl to tetradecyl and hexadecyl, a shape transformation from elongated "nanoworms" to a mixture of "onion-like" and "wasp-like" nanoparticles was observed.
