specimen


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specimen

1. Med a sample of tissue, blood, urine, etc., taken for diagnostic examination or evaluation
2. the whole or a part of an organism, plant, rock, etc., collected and preserved as an example of its class, species, etc.

Specimen

 

a sample, usually metal, that may be studied macro-scopically (in macrosections) or microscopically (in microsections). Preparation of a specimen entails grinding the flat surface of a sample and, if microsections are to be examined, polishing the surface. The surface is then etched with chemical reagents or heated in a gaseous atmosphere or in a vacuum. Selective etching and evaporation occur as a result of the differences in the physi-cochemical properties both of the grains of different phases as well as of the different grain-boundary regions. This leads to the formation of a macrorelief, which is visible to the unaided eye, or a microrelief, which must be examined with a microscope.

specimen

[′spes·ə·mən]
(science and technology)
An item representative of others in the same class or group.
A sample selected for testing, examination, or display.
References in periodicals archive ?
Cases were selected where patients also had to have had at least 1 additional tissue specimen evaluated at a different time.
In this research, a total of nine dog-bone steel specimens were prepared and tested through using different specimen preparation methods and correlation image photogrammetry.
Centers for Disease Control and Prevention (CDC) collaborated with several organizations in a review of the effectiveness of barcode specimen collection in reducing errors.
The length change was monitored with the aid of a comparator upon exposure to drying to imitate the free ring specimen procedure.
Pre-3 Specimen. Compared with Pre-1 and Pre-2 specimen, as displayed in Figure 3, the internal cracks formed on Pre-3 specimen were far less, and the damaged plane and the horizontal plane were at an angle, not along with the longitudinal direction, which was ascribed to shear failure.
The specimens were planned on four sides to the size of 50 mm x 50 mm x 1500 mm (structural size) and 50 mm x 50 mm x 200 mm (small clear specimen) which were prepared according to [13,14-15].
The SB-480 and GA-480 specimens had the same shear reinforcement amount, whereas the SB-680 specimen had a greater shear reinforcement amount than either of these.
It should be mentioned that the lower sheet thickness [t.sub.l] is 2 mm and the half specimen width b is 12.5 mm.
Three specimen types collected on the same day were available for 53 of the 66 cases and were tested by RT-PCR: 92% of urine specimens, 81% of saliva specimens, and 51% of serum specimens tested positive.
Regular monitoring of our own incident reports through our reporting system identified a rise in specimen labelling related issues within the organisation and though most errors were corrected through the laboratory checking system, there was potential risk to patients.
To prepare specimens, the ratio of water to cement made W/C = 0.5/1 while the ratio of sand to cement was S/C = 2, and coarse aggregate was not applied.
M2 EQUITYBITES-July 2, 2015-Atossa Genetics reports purchase of Ductal Lavage Specimen Bank from the Dr.