scispace - formally typeset
Search or ask a question

Showing papers by "University of Bedfordshire published in 1974"


Patent
24 Jul 1974
TL;DR: In this paper, an open-ended duct immersed in water in an upright position, an oxygen-detecting probe in the lower end portion of the duct, and means for injecting a continuous stream of air into the upper portion of a duct, the air causing water to rise in the duct and thereby induce a flow of water into the duct.
Abstract: Apparatus for measuring the dissolved oxygen content of water comprises an open-ended duct immersed in the water in an upright position, an oxygen-detecting probe in the lower end portion of the duct, and means for injecting a continuous stream of air into the upper portion of the duct, the air causing water to rise in the duct and thereby induce a flow of water into the duct and past the probe. A valve in the upper end of the duct is operable by compressed air to shut off the top of the duct so that air builds up inside the duct and back-flushes the liquid through a strainer on the lower end of the duct. Displacement of the water around the duct by air enables the probe to be calibrated. The upper section of the duct into which air is injected may be connected to the lower section containing the probe by polyethylene tubing of a length to enable the lower section of the duct to be lowered to any desired depth.

8 citations


Journal ArticleDOI
TL;DR: In this article, the infrared and Raman spectra of crystalline sodium dodecylsulphate 1 8 hydrate (α-phase) have been recorded and it was shown that the spce group C 2 h 4 and not C s 2.

6 citations


Journal ArticleDOI
TL;DR: In the course of the military operations at Pylos three major actions were fought as discussed by the authors, the first was a series of attacks by land and sea launched by the Peloponnesians against the forces under Demosthenes occupying the peninsula of Pylas (Thuc. 4. 9−12); the second was the naval battle in the harbour (13−14); the third was the Athenian assault on the Spartans cut off on Sphacteria(29−39).
Abstract: In the course of the military operations at Pylos three major actions were fought. The first was the series of attacks by land and sea launched by the Peloponnesians against the forces under Demosthenes occupying the peninsulaof Pylos (Thuc. 4. 9–12); the second was the naval battle in the harbour (13–14); the third was the Athenian assault on the Spartans cut off on Sphacteria(29–39). The second of these actions does not appear to have had less influenceon the development of the situation or to have been militarily less interestingand instructive than the other two. The account of it by Thucydides is, however, less detailed than his accounts of the first and third major actions andmay be thought to be lacking in the clarity which is normally a conspicuousfeature of his battle narratives.

5 citations