Noisy and erratic valve operation can be eliminated with entirely mechanical valve-lifter linkage only if the tappet clearance between the rocker arms and the valve stems is closely maintained at the specified value for the engine as measured with a thickness gauge.
Ever-decreasing feature sizes require extremely tight process control, especially the temperature trajectory to be precisely followed and the temperature uniformity across the wafer to be closely maintained, both of which rely on a good chamber design.
In healthy individuals, magnesium serum concentration is closely maintained within the physiological range [ 13, 15, 18].
Denaturation alters the macromolecular order of collagen, but chemical composition is closely maintained [22 24].
Besides, a tumor or metastasis-initiating clone or sub-clone in each individual has a unique DNA methylation signature that is closely maintained across metastatic dissemination [ 20].
In higher plants, the cytoplasm usually contains low Na+ concentrations and high K+ concentrations to maintain the function of essential enzyme processes; this state is closely maintained during osmotic adjustment [ 1, 24].
In addition to representing expansion possibilities for PLCB licensed outlets under the current regulatory framework, community standards (i.e., distance restrictions) are more closely maintained because there are no exceptions to spatial proximity stipulations.
This temperature limit was assumed based on the fact that the coolant chemical structure was closely controlled to maintain an oxide layer on the structural surface for corrosion protection.
Care was taken not to release any soft tissue attachments of the nerve to allow its true anatomical position and course to be as closely maintained as possible during dissection, Fig. 2.
Under heavy grazing (175 206 cow grazing days ha−1 yr−1), the basal regrowth of the oaks was closely cropped and the vegetation was maintained as predominantly open woodland.
