منابع مشابه
I and its Application as Environmental Tracer
Iodine-129, the long-lived radioisotope of iodine, occurs naturally, but anthropogenic generated 129 I has dominated the environment in the past 60 years. Due to active chemical and environmental properties of iodine and the enhanced analytical capacity for 129 I measurement, the application of 129 I as an environmental tracer has highly increased in the past 10 years. Neutron activation analys...
متن کاملApplication of Tracer Techniques to Continuous-flow Toxicity Testing
-Frequent toxicant analyses are essential for good quality data in long-term continuous-flow tests. Due to the time consuming and costly chemical analyses, exposure levels are measured at best on a daily basis. These infrequent determinations may not detect variability in toxicant concentrations that could result in test failures. To minimize repetitive testing and improve data quality, a dye t...
متن کاملStudy and application of ZeroWash tracer fracture monitoring
Hydraulic fracturing is an effective technique for increasing the productivity of wells producing from low permeability formations. Tracer fracture monitoring technique is near-wellbore zone frctures direct test method that can monitor the height and width of hydraulic fractures in the near-wellbore section. ZeroWash Tracer uses a medium strength ceramic proppant which is mainly used in fractur...
متن کاملFalse positive lower limb lymphoscintigraphy due to inadvertent intra-vascular injection of the tracer: Importance of tracer re-injection
We presented a 30 year-old woman presented with symmetrical swelling of the lower limbs since 5 years ago with sparing of the feet. She was highly suspicious of having lipoedema and was referred for lower limb lymphoscintigraphy to rule out possible lymphedema. Lymphoscintigraphy images showed asymmetrical injection sites and unusually high liver and spleen uptake. Inguinal nodes was not visual...
متن کاملEquations for tracer experiments.
The use of isotopes makes possible quantitative measurements of many biochemical and physiological processes, hitherto secure from such detailed observation. Perhaps the most frequent use of this tool is in the observations of physiology that are concerned with the transfer of fluid from one portion of the body to another, and in the biochemical observations of the formation of one compound fro...
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ژورنال
عنوان ژورنال: RADIOISOTOPES
سال: 1981
ISSN: 1884-4111,0033-8303
DOI: 10.3769/radioisotopes.30.special_41s