densitometer

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densitometer

 [den″-sĭ-tom´ĕ-ter]
1. an instrument for determining density or specific gravity of a liquid.
2. an instrument used to measure the degree of exposure (darkening) on photographic or x-ray film.

den·si·tom·e·ter

(den'si-tom'ĕ-tĕr),
1. An instrument for measuring the density of a fluid. Synonym(s): densimeter
2. An instrument for measuring, by virtue of relative turbidity, the growth of bacteria in broth; useful in microbiologic assay of nutrients and antibiotics, phage studies.
3. An instrument for measuring the density of components (for example, protein fractions) separated by electrophoresis or chromatography, using light absorption or reflection.
4. An electronic instrument for measuring the blackening of radiographic film by x-ray exposure; used for film sensitometry, bone densitometry, measurement of line spread function (microdensitometer).
5. An instrument for measuring the extent to which a material absorbs or reflects light.
[L. densitas, density, + G. metron, measure]

densitometer

(dĕn′sĭ-tŏm′ĭ-tər)
n.
1. An apparatus for measuring the optical density of a material, such as a photographic negative.

den′si·tom′e·try (-trē) n.

den·si·tom·e·ter

(dens'i-tom'ĕ-tĕr)
1. An instrument for measuring the density of a fluid.
Synonym(s): densimeter.
2. An instrument for measuring, by virtue of relative turbidity, the growth of bacteria in broth; useful in microbiologic assay of nutrients and antibiotics and phage studies.
3. An instrument for measuring the density of components (e.g., protein fractions) separated by electrophoresis or chromatography, using light absorption or reflection.
4. An electronic instrument for measuring the blackening of radiographic film by x-ray exposure; used for film densitometry, bone densitometry, measurement of line spread function (microdensitometer).
[L. densitas, density, + G. metron, measure]

den·si·tom·e·ter

(dens'i-tom'ĕ-tĕr)
1. An instrument for measuring the density of a fluid.
2. An instrument for measuring the growth of bacteria in broth.
3. An instrument for measuring the density of components separated by electrophoresis or chromatography, using light absorption or reflection.
4. An electronic instrument for measuring the blackening of radiographic film by x-ray exposure; used for film densitometry and bone densitometry.
[L. densitas, density, + G. metron, measure]
References in periodicals archive ?
The steroid dose applied to the body surface had no impact on the anthropometric, laboratory, and densitometric parameters studied (p > 005).
The densitometric analysis of p66 in 20 CRC and 20 MANC samples shows insignificant differences between normal and tumoural samples (Figure 3(c)).
Caption: Figure 4: Densitometric profile and SDS-PAGE of a pool of 15 myofibrillar extracts obtained from sole, European hake, and sea bass samples extracted with denaturing (a) and nondenaturing (b) solutions (1 = myosin heavy chain; 2 = 180-110 kDa; 3 = [alpha]-actinin; 4 = 95-55 kDa; 5 = desmin; 6 = 51-47 kDa; 7 = actin; 8 = 40-38 kDa; 9 = tropomyosin; 10 = 33-23 kDa; 11 = myosin light chain 1; 12 = 21-18 kDa; 13 = 16 kDa; 14 = myosin light chain 2; 15 = 14-10 kDa).
Western blotting and densitometric analysis of CD36 receptor and [beta]-actin (loading control) in macrophage extracts.
Caption: Figure 2: (a) Densitometric analysis of sRAGE levels detected by Western blot in APS patients (n = 30), subjects with pregnancy morbidity (n = 35), and healthy donors (n = 30).
(b-e) The intensity of the bands was evaluated by densitometric analysis; the values from at least three independent experiments were normalized and reported as fold increase with respect to the untreated sample.
(b, d) Protein levels of GFAP (b) and active caspase-3 (d) were evaluated by Western blot and densitometric analysis using [beta]-actin as the loading control.
Densitometric assessment was performed on the tibia and L1 and L2 with two measurements being made on each bone.
The densitometric measurements of contents of diphenhydramine in solutions investigated were done after 10, 20, 30, 50, 70, 90, and 120 hours of exposure to light and heating.
The analytical wavelengths selected on the basis of multiwavelength densitometric scanning were as follows: tartrazine 420 nm; orange yellow 460 nm; azorubine 500 nm; Ponceau 4R 500 nm; Brilliant Blue 620 nm.