THE EFFECT OF TEMPERATURE VARIATIONS AND OF CERTAIN DRUGS UPON THE INTESTINAL MOTILITY OF ELASMOBRANCH FISHES

1933 ◽  
Vol 8 (1) ◽  
pp. 145-160 ◽  
Author(s):  
J. V. V. Nicholls
Keyword(s):  
Intestinal Motility ◽  
Spontaneous Contraction ◽  
Effect Of Temperature ◽  
Spiral Intestine ◽  
Temperature Variations ◽  
Spiral Valve ◽  
Spasmodic Contraction ◽  
Elasmobranch Fishes

A rise of temperature increases the rate of the spontaneous contraction of the spiral intestine and valve, rectum and colon. At any one temperature the upper end of the spiral intestine has the same rate of contraction as the lower end, whereas the upper end of the spiral valve has a higher rate than the lower end. The rectum and colon have no rapid rhythm, but give a single spasmodic contraction every half hour or so.Adrenaline, pilocarpine and acetylcholine stimulate all the above parts, though the effect of pilocarpine on the spiral valve is very indefinite. Atropine has no effect on normal contractions, but counteracts the effect of acetylcholine and pilocarpine.

THE EFFECT OF TEMPERATURE VARIATIONS AND OF CERTAIN DRUGS UPON THE GASTRIC MOTILITY OF ELASMOBRANCH FISHES

1932 ◽  
Vol 7 (1) ◽  
pp. 447-463 ◽  
Author(s):  
JOHN V. V. NICHOLLS
Keyword(s):  
Gastric Motility ◽  
Effect Of Temperature ◽  
Temperature Variations ◽  
Greater Curvature ◽  
Elasmobranch Fishes ◽  
Lesser Curvature ◽  
Spontaneous Contractions ◽  
Different Parts

A rise of temperature causes an increase in the rate of the spontaneous contractions of all parts of the stomach. At any one temperature the rate of contraction is different in different parts of the stomach. The parts named in order of decreasing rate are: pylorus, fundic and antral regions of the lesser curvature, fundic region of the greater curvature, antral region of the greater curvature and the cardia.Adrenaline stimulates all parts of the stomach except the antral region where large doses inhibit and minute doses stimulate. Pilocarpine and acetylcholine stimulate all parts. Atropine has no effect on the normal contractions but antagonizes the effect of pilocarpine and acetylcholine.

Temperature Sensitivity Analysis of Extended Source Double Gate Tunnel Field Effect Transistor

2021 ◽  
Author(s):  
Dharmender Nishad ◽  
Kaushal Nigam ◽  
Satyendra Kumar
Keyword(s):  
Temperature Sensitivity ◽  
Computer Aided Design ◽  
Field Effect ◽  
Field Effect Transistor ◽  
Effect Of Temperature ◽  
Double Gate ◽  
Extended Source ◽  
Temperature Variations ◽  
Effect Transistor ◽  
Tunnel Field Effect Transistor

Abstract Temperature-induced performance variation is one of the main concerns of the conventional stack gate oxide double gate tunnel field-effect transistor (SGO-DG-TFET). In this regard, we investigate the temperature sensitivity of extended source double gate tunnel field-effect transistor (ESDG-TFET). For this, we have analyzed the effect of temperature variations on the transfer characteristics, analog/RF, linearity and distortion figure of merits (FOMs) using technology computer aided design (TCAD) simulations. Further, the temperature sensitivity performance is compared with conventional SGO-DG-TFET. The comparative analysis shows that ESDG-TFET is less sensitive to temperature variations compared to the conventional SGO-DG-TFET. Therefore, this indicates that ESDG-TFET is more reliable for low-power, high-frequency applications at a higher temperature compared to conventional SGO-DG-TFET.

scholarly journals Effect of Temperature and Pyrolysis Time in Liquid Smoke Production from Dried Water Hyacinth

2020 ◽  
Vol 9 (1) ◽  
pp. 164-171
Keyword(s):  
Refractive Index ◽  
Water Hyacinth ◽  
Effect Of Temperature ◽  
Refractive Indices ◽  
Total Acid ◽  
Temperature Variations ◽  
Liquid Smoke ◽  
Time Variations ◽  
Pyrolysis Reactor ◽  
Time Variables

This study aimed to investigate the use of water hyacinth to produce liquid smoke. The study observes the temperature and time variables of yield, pH, density, and refractive index in the production of liquid smoke from water hyacinth. The sequence of the work is as follows: first, water hyacinth was cut into 5 cm sections and then sun-dried for 2–3 d, depending on the weather. Next, 550 g of dried water hyacinth was added to the pyrolysis reactor. The temperature variations were 200°C, 400°C, and 600°C, and the time variations were 1, 4, and 7 h. As a result, liquid smoke was produced with varying yield, pH, densities, and refractive indices. The best results in this research are liquid smoke pyrolysis at a temperature of 400°C and 4 h with the acquisition of a yield of 93 mL, pH 2–4, a density of 1.080,8 gr/mL, and a refractive index of 1.339,6, with chemical component 41.45% total acid, 2.44% phenol and 56.10% carbonyl.

scholarly journals Effect of Temperature Variations on Wave Propagation Characteristics in Power Cables

2015 ◽  
Vol 106 (1) ◽  
pp. 28-38 ◽  
Author(s):  
C. Nyamupangedengu ◽  
M. Sotsaka ◽  
G. Mlangeni ◽  
L. Ndlovu ◽  
S. Munilal
Keyword(s):  
Wave Propagation ◽  
Effect Of Temperature ◽  
Power Cables ◽  
Propagation Characteristics ◽  
Temperature Variations
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