optical rotation

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(ro-ta'shon) [L. rotatio, a turning]
The process of turning on an axis.

external rotation

Restitution (3). See: Cardinal Movements at Birth - step 7

fetal rotation

Twisting of the fetal head as it follows the curves of the birth canal downward.

injection site rotation

Administration of parenteral medications such as insulin into a different part of the body each day to avoid local tissue trauma, atrophy, or lipodystrophies.

Patient care

Subcutaneous injections of insulin are typically rotated around the abdomen from the right upper quadrant, to the midepigastrium, left upper quadrant, left lower quadrant, hypogastrium, and right lower quadrant before returning to the right upper quadrant. A similar technique is used with low-molecular-weight heparins, colony-stimulating factors, and other drugs.

optical rotation

See: optical activity

tooth rotation

The repositioning of a tooth by turning it on its long axis to a more normal occlusal position.
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References in periodicals archive ?
Genetic modification Yield of lactic acid 1 Engineered to block the 0.93 g/g glucose with an acetic acid formation optical purity of 99.3% [5] pathway[5] 2 Nil 20 g [l.sup.-1] [h.sup.-1] [6] 3 Nil 35 g [l.sup.-1] [h.sup.-1] [6] 4 Nil 5 g [l.sup.-1] [h.sup.-1] [7] 5 adh-ve mutant by UV 78 [+ or -] 1.2 (g/g) [8] radiation[8] 6 NIL 94.8 g L-1[9] 7 NIL 1.86 g L-1 h-1[10] 8 Nil 35 gl-1 [11] 9 Overexpression of L-ldh gene 0.62 g l-1 [12] derivative[12] 10 Overexpression of GlpK/GlpD 50 g/L of L-lactic acid[13] gene [13] Table 2: Table summarizes genetically manipulated microorganisms used in PLA production.
Suecessful SSP of the pre-PLLA obtained by ROP, carried out with the ternary catalyst system, is clearly indicated by the resulting increase in [M.sub.w], [T.sub.m], thermal stability and optical purity (%L).
Certain 1-carnitine suppliers have been known to seemingly confuse the whole issue of optical purity. One example of such confusion is to claim a 0% d-carnitine level in their product, yet provide specification sheets and certificates of assay stating only that their product meets the 0.5% codex specification.
(30), which yielded the reagent in high optical purity. However, some modifications were introduced to this procedure to make it easier and safer.
(30) tested the optical purity of the reagent by derivatizing optically pure enantiomers of PEA ([alpha]-methylbenzylamine) and analyzing the resulting diastereomers.
Optical purity (% L-content) has been measured using a Jasco DPI-370 digital polarimeter, calibrated with 5% fructose solution of [[alpha]]589 nm = -89 [degrees].
(f) Optical purity (% L) of filtered samples of PLACN in CH[C1.sub.3].
The lower the racemization degree, the higher is the optical purity (OP), which is consistent with the results of the OP (listed in Table 1).
The optical purity of the starting material was verified by its specific rotation ([Mathematical Expression Omitted]; c = 1, THF) prior to use in the subsequent steps.