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Spontaneous fluctua- tions of excitability in the muscle spindle of the frog. The components of mem- brane conductance in the giant axon of Loligo. Understanding the nervous system: A model illustrating some biotisica of muscle spindle physiology. Inhibition of impulse activity in a sensory neuron by an electrogenic pump.

Evaluation of Escherichia coli cells damages induced by ultraviolet and proton beam radiation

This can be provoked by UVc radiation that induces the formation of pyrimidine dimers in the cellular DNA or by beams of protons it can dislocate electrons of the atoms and create highly reactive ions that can attack biomolecular constituents of the cell, including the DNA [4], [5].

The cells were then centrifugated rpm15 minutes and resuspended in solution of NaCl 0. At the present work possible transformations on E.

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The biochemical test carried out was the following: By microscopic observations it was noticed that the E. Loewenstein WR, Mendelson M.

Adaptation of cat moto- neurons to sustained and intermittent extracellular activation. Motoneurone properties and motor fatigue. The exercised skeletal mus- cle: Menezes, Tratado de Microbiologiap. A quantita- tive description of membrane currents in rabbit my- elinated nerve. Kernell D, Monster AW. Some mutations are undesirable and even lethal, however, some can be interesting for the survival of a species [1], [2], [4].

Some properties of motor unit action potential trains recorded during constant force isometric contractions in man. Components of re- ceptor adaptation in a Pacinian corpuscle. After the irradiation the cells were submitted to a series of biochemical tests.

109832898-Livro-Biofisica-Basica-Ibrahim-Felippe-Heneine.pdf

The induction of N-methyl-D-aspar- tate receptor-dependent long-term potentiation. Eur J Translat Myology. Motor-unit discharge rates in maximal voluntary con- tractions of three human muscles. Mortazavi, An Introduction to Radiation Hormesis. Changes in motoneurone firing rates during sustained maximal voluntary contractions. La Lettre des Neuros- ciences. All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License.

Services on Demand Journal. Prokaryote cells were exposed to ultra violet UVc radiation and to proton beams hfneine order for the induced effects to be studied.

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Energy-efficient action po- tentials in hippocampal mossy fibers. For the radiation with proton beams the absorbed doses ranged from heneins.

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How to cite this article. For each of the radiation types UVc and protons a survival curve that relates the survival fraction with the exposition time or the absorbed dose by the cells was made [4], [5]. The prokaryotes compose an interesting group of microorganisms, which can be used as instruments of scientific investigation.

Brokensha G, Westbury DR. Deutsch S, Deutsch A. Marini M, Veicsteinas A. Action po- tential duration restitution portraits of mamma- lian ventricular myocytes: Principles of electric circuits, electron flow version.

Livro Biofísica Básica – Ibrahim Felippe Heneine – PDF Free Download

The existence of the so called hormesis phenomenon is also registered, with stimulated or benefic effect, induced by low doses of a radioactive agent. A cellular survival curve versus exposition time and absorbed dose was built for each case. Morphological and physiological alterations occurred in Escherichia coli E.

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