Big Chemical Encyclopedia

Chemical substances, components, reactions, process design ...

Articles Figures Tables About

And the motor system

Mogenson, G, Jones, D and Yim, CY (1980) From motivation to action functional interface between the limbic system and the motor system. Progr. Neurobiol. 14 69-97. [Pg.162]

Fig-1 Schematic view of the overall olfactory processing in insects. Pheromones and other semiochemicals are detected by specialized sensilla on the antennae, where the chemical signal is transduced into nervous activity. The olfactory receptor neurons in the semiochemi-cal-detecting sensilla are connected directly to the antennal lobe. Here the semiochemical-derived electrical signals are processed and sent out (through projection neurons) to the protocerebrum. Olfactory information is then integrated with other stimulus modalities, a decision is made, and the motor system is told what to do... [Pg.15]

It is possible that the driven equipment to which the motor is coupled has a higher vibration level than the motor, resulting in quantum imbalance and more vibrations than when the motor was tested. All attempts must be made, to bring the vibration level of the drive and the driven system within the limits as prescribed in Table 11.3. [Pg.240]

Electric motors above 5,000 hp are custom-designed for the specific application, taking into consideration compressor characteristics and the power system parameter limitations. [Pg.258]

Peripheral nervous system Nerve tissues lying outside the brain and spinal cord, functions include the transmittal of sensory information such as touch, heat, cold, and pain, and the motor impulses for limb movement. [Pg.1466]

A positive displacement mud motor is included in the downhole assembly between the bit and the MWD system. It develops a true power of 100 hp when the pulse nozzle is closed. What is the true power obtained when a 200-psi pulse is created The bit nozzle pressure loss will be neglected. Use... [Pg.946]

Both rotary and mud motor systems use an electromagnetic wireline telemetry to relay the data from the near-bit sub to the mud telemetry sub. [Pg.1005]

The purpose of a centrifugal pump is to increase the pressure of a liquid in order to move it through a piping system. The pump is driven by a motor, which must provide sufficient power to operate the pump at the desired conditions. You wish to find the pressure developed by a pump operating at a flow rate of 300 gpm with an oil having a specific gravity (SG) of 0.8 and a viscosity of 20 cP, and the required horsepower for the motor to drive the pump. The pump has an impeller diameter of 10 in., and the motor runs at 1200 rpm. [Pg.47]

Metachromatic leukodystrophy is due to a defect in arylsulfatase A (ASA). There are three major forms late infantile, juvenile and adult. The overall incidence is 1 40,000. In the late infantile and early juvenile forms, which comprise about 80% of patients, the initial symptoms involve the motor system, with falls, loss of ability to walk, flaccid paralysis, difficulty in swallowing, loss of speech, vision, seizures, decerebrate state and death 1-7 years after onset of symptoms. In the adolescent and... [Pg.686]

Pharmacologically, carbofuran inhibits cholinesterase, resulting in stimulation of the central, parasympathetic, and somatic motor systems. Sensitive biochemical tests have been developed to measure cholinesterase inhibition in avian and mammalian brain and plasma samples and are useful in the forensic assessment of carbamate exposure in human and wildlife pesticide incidents (Bal-lantyne and Marrs Hunt and Hooper 1993). Acute toxic clinical effects resulting from carbofuran exposure in animals and humans appear to be completely reversible and have been successfully treated with atropine sulfate. However, treatment should occur as soon as possible after exposure because acute carbofuran toxicosis can be fatal younger age groups of various species are more susceptible than adults (Finlayson et al. 1979). Carbofuran labels indicate that application is forbidden to streams, lakes, or ponds. In addition, manufacturers have stated that carbofuran is poisonous if swallowed, inhaled, or absorbed through the skin. Users are cautioned not to breathe carbofuran dust, fumes, or spray mist and treated areas should be avoided for at least 2 days (Anonymous 1971). Three points are emphasized at this juncture. First, some carbofuran degradation... [Pg.805]

In the central nervous system (CNS) of guinea-pigs and rats, 5-HT4 receptors are expressed in two anatomical and functional structures the extrapyramidal motor system and the mesolimbic system [6,7]. In human brain, the presence of 5-HT4 receptors has been shown in basal ganglia and in the caudate putamen nuclei, where the density is the highest [8]. [Pg.197]

The sensory neuron from the tail makes a synapse with the modulating neuron, known as an intemeuron. Its job is to fine-tune the response of the sensory neuron to stimulation. Note that the intemeuron synapses with both the cell body and the presynaptic terminal of the sensory neuron. The neurotransmitter released by the intemeuron into these synapses is serotonin (also a key neurotransmitter in the human nervous system). The net effect of the serotonin release is to strengthen the connection between the sensory neuron and the motor neuron. It remains to explain how this happens that, too, has been tracked down in molecular detail. [Pg.312]

Pharmacology Cyclobenzaprine, structurally related to the tricyclic antidepressants (TCAs), relieves skeletal muscle spasm of local origin without interfering with muscle function. It is ineffective in muscle spasm caused by CNS disease. The net effect is a reduction of tonic somatic motor activity, influencing both gamma and alpha motor systems. [Pg.1284]

The monolayer can also be held at a constant surface pressure, which is enabled by a computer-controlled feedback system between the electrobalance and the motor responsible for the movements of the compressing barrier. This is useful when producing LB films, that is, when the monolayer is deposited on a solid substrate. [Pg.91]


See other pages where And the motor system is mentioned: [Pg.140]    [Pg.465]    [Pg.521]    [Pg.500]    [Pg.140]    [Pg.465]    [Pg.521]    [Pg.500]    [Pg.294]    [Pg.108]    [Pg.754]    [Pg.72]    [Pg.184]    [Pg.188]    [Pg.276]    [Pg.562]    [Pg.568]    [Pg.611]    [Pg.372]    [Pg.672]    [Pg.196]    [Pg.28]    [Pg.788]    [Pg.36]    [Pg.278]    [Pg.58]    [Pg.58]    [Pg.527]    [Pg.373]    [Pg.233]    [Pg.390]    [Pg.435]    [Pg.474]    [Pg.542]   
See also in sourсe #XX -- [ Pg.100 ]

See also in sourсe #XX -- [ Pg.100 ]




SEARCH



Motor system

Motor, the

© 2024 chempedia.info