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Limitations of use in acidic waters; Depending on the environment, water flows possess certain factors that can affect how a dye performs. Natural fluorescence in a water flow can interfere with certain dyes. The presence of organic material, other chemicals, and sunlight can affect the intensity of dyes.
A flow tracer is any fluid property used to track the flow velocity (i.e., flow magnitude and direction) and circulation patterns. Tracers can be chemical properties, such as radioactive material , or chemical compounds, physical properties, such as density, temperature, salinity, or dyes, and can be natural or artificially induced.
Whole blood: CBC, ESR, Coombs test, platelet antibodies, flow cytometry, blood levels of tacrolimus and cyclosporin: Pink K 2 EDTA (chelator / anticoagulant) Blood typing and cross-matching, direct Coombs test, HIV viral load Royal blue ("navy") EDTA (chelator / anticoagulant) Trace elements, heavy metals, most drug levels, toxicology: Tan
If the flow is not steady then when the next particle reaches position the flow would have changed and the particle will go in a different direction. This is useful, because it is usually very difficult to look at streamlines in an experiment. If the flow is steady, one can use streaklines to describe the streamline pattern.
Erythrocyte aggregation is the reversible clumping of red blood cells (RBCs) under low shear forces or at stasis. Stacked red blood cells flow across drying slide. Erythrocytes aggregate in a special way, forming rouleaux. Rouleaux are stacks of erythrocytes which form because of the unique discoid shape of the cells in vertebrate body. The ...
A radioactive tracer can also be used to track the distribution of a substance within a natural system such as a cell or tissue, [1] or as a flow tracer to track fluid flow. Radioactive tracers are also used to determine the location of fractures created by hydraulic fracturing in natural gas production. [ 2 ]
In order to trace projections from a specific region or cell, a genetic construct, virus or protein can be locally injected, after which it is allowed to be transported anterogradely. Viral tracers can cross the synapse, and can be used to trace connectivity between brain regions across many synapses.
In computing, a stack trace (also called stack backtrace [1] or stack traceback [2]) is a report of the active stack frames at a certain point in time during the execution of a program. When a program is run, memory is often dynamically allocated in two places: the stack and the heap. Memory is continuously allocated on a stack but not on a heap.