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Pulse-chase analysis of auxin signal transduction in an Arabidopsis thaliana wildtype and an axr2-1 mutant. Wild-type and axr2-1 seedlings were labeled with 35S- methionine , and AXR2/axr2-1 protein was immunoprecipitated either immediately after the labeling period (t = 0) or following a 15-minute chase with unlabeled methionine (t = 15).
A neuron is represented by an RC circuit with a threshold. Each input pulse (e.g. caused by a spike from a different neuron) causes a short current pulse. Voltage decays exponentially. If the threshold is reached an output spike is generated and the voltage is reset. where V m is the voltage across the cell membrane and R m is the membrane ...
Developmental bioelectricity is the regulation of cell, tissue, and organ-level patterning and behavior by electrical signals during the development of embryonic animals and plants. The charge carrier in developmental bioelectricity is the ion (a charged atom) rather than the electron, and an electric current and field is generated whenever a ...
Pulsed-field gel electrophoresis. Pulsed-field gel electrophoresis ( PFGE) is a technique used for the separation of large DNA molecules by applying an electric field that periodically changes direction to a gel matrix. [ 1][ 2] Unlike standard agarose gel electrophoresis, which can separate DNA fragments of up to 50 kb, PGFE resolves fragments ...
Flash photolysis is a pump-probe laboratory technique, in which a sample is first excited by a strong pulse of light from a pulsed laser of nanosecond, picosecond, or femtosecond pulse width or by another short-pulse light source such as a flash lamp. This first strong pulse is called the pump pulse and starts a chemical reaction or leads to an ...
Website. jbl .com. JBL is an American audio equipment manufacturer [ 1] headquartered in Los Angeles, California, United States. JBL serves the home and professional market. The professional market includes studios, installed/tour/portable sound, music production, DJ, and cinema markets. The home market includes high-end home amplification ...
Ecology, evolution, and paleontology. Unsolved problems relating to the interactions between organisms and their distribution in the environment include: Paradox of the plankton. The high diversity of phytoplankton seems to violate the competitive exclusion principle. Ediacaran biota.
Atmospheric nuclear weapon tests almost doubled the concentration of 14 C in the Northern Hemisphere. [ 1] The bomb pulse is the sudden increase of carbon-14 ( 14 C) in the Earth's atmosphere due to the hundreds of aboveground nuclear bombs tests that started in 1945 and intensified after 1950 until 1963, when the Limited Test Ban Treaty was ...