specific activity


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specific activity

[spə′sif·ik ak′tiv·əd·ē]
(nucleonics)
The activity of a radioisotope of an element per unit weight of element present in the sample.
The activity per unit mass of a pure radionuclide.
The activity per unit weight of a sample of radioactive material. In these three cases, specific activity can be expressed in such units as millicuries per gram, disintegrations per second per milligram, or counts per minute per milligram.
References in periodicals archive ?
As a result of ion exchange chromatography enzyme from kidney of control and Pb+Cr treated fish had highest activity as 508.33 and 427 UmL-1 while highest specific activity was 1105.06 and 1055.55 Umg-1 with 1.98 and 2.70 fold purification, respectively.
SOCAR Energy Georgia (subsidiary of Azerbaijan's state oil company SOCAR in Georgia) defined specific activity directions for 2018 at a meeting in Tbilisi, the company's head Mahir Mammadov told Trend.
The specific activity of HEX in parotid glands of the control rats in the 2nd week of the experiment was significantly higher compared to submandibular glands of these rats, whereas in the group of diabetic rats in the 2nd week of the experiment, it was considerably lower in parotid glands than in submandibular glands.
In point of fact, the function of special purpose vehicles (SPVs) to create a separate platform of assets for a specific activity is one of the primary reasons for off shore company formation.
Literature shared positive prediction of sting reactivity through allergy specific activity (the allergen-specific IgE to total IgE ratio; sIgE/T-IgE analysis) involving extensive effector cell activation along with allergen-specific IgE antibody's concentration, affinity (tightness of binding), clonality (epitope specificity) observations.[sup][9]
Article 5(4) of the current OECD Model Tax Treaty lists "specific activity exemptions," in which a PE is deemed not to exist where a company's activities in a given country are limited to those that are listed in that paragraph.
In electro-catalyst performance tests, they exhibited a 36-fold enhancement in mass activity and 22-fold enhancement in specific activity compared to industry-standard platinum-carbon catalysts, which is over an order-of-magnitude higher than the U.S.
A more or less gradual increment in enzyme and specific activity was observed when experiments were conducted by applying differential levels of time course spore inoculum size volume of fermentation medium pH temperature carbon additive etc.
Determination of Specific Activity. To evaluate the extraction process of the enzyme, the given (1) was used to measure the specific activity [10]
Moreover, the levels of trypsin specific activity have been found to relate to diet consumption [12] or protein consumption [13].
Specific activity in leaves, shoot, and root at different growth stages was measured by standard methods.

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