optical rotation

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Related to Optically active: Optically Active Substance

rotation

(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.

optical rotation (pˑ·t·kl rō·tāˑ·shn),

n the angle by which plane-polarized light rotates when it passes through a substance that exhibits optical activity. This is a distinguishable quality of a particular compound. See also optical activity.
References in periodicals archive ?
To elucidate a number of conformational and structural problems in studying solutions of the optically active cellulose derivatives, the ORD proved to be a very useful method [8, 9].
Because existing polarimeters have performance limitations, Georgia Tech researchers are working to develop a more sensitive polarimeter that has the ability to detect smaller concentrations of optically active compounds.
of Bologna, Italy) perceived a gap in coverage pertaining to a recent and important application in connection with the synthesis of asymmetric, optically active compounds.
Thus, optically active phosphines have been widely used as chiral ligands for transition metalcatalyzed asymmetric reactions.
The resulting biomaterial could be used to make optically active structures, such as optical diffusers for solar panels.
The technique has been widely recognized as a strategy to prepare desired organic molecules in their optically active forms, but the homogeneous version has received the lion's share of attention and acclaim until recently.
Sherwin-Williams protective & Marine Coatings has announced that its Opti-check[TM] Optically Active Pigments (OAP) will be available in a variety of protective and marine coatings products.
Jess then went on to offer optically active additive (OAA) pigments as a possible solution for complying with IMO's inspection criteria, which can be a challenging task to undertake.
Polymers with optically active properties have found interesting applications such as chiral phase for enantiomeric separations in chromatography methods or chiral media for asymmetric synthesis [5-10].
Gold nanoparticles also are more biocompatible than other types of optically active nanoparticles.
This has led to an important new concept in solid state chemistry, that of the ionic chiral auxiliary, whereby the enantioselectivity of a chemical reaction of an organic ion (for example, a carboxylate anion) in the crystalline state can be controlled by the presence of an optically active counterion (e.
Thin layers of metallic phosphides containing indium, aluminum, and gallium make up the optically active region, which determines the wavelength of the resulting beam.

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