NEW APPARATUS IN WATER ANALYSIS.

A New Sputtering Apparatus

The writer, in sputtering a large number of mirrors, has found that the apparatus and methods to be described have several advantages, particularly where very large and perfect mirrors are desired. The accompanying diagram will be self explanatory, and the dimensions given have been found convenient for mirrors up to 10 cm diameter. The apparatus has been designed to avoid the use of any grease...

Optopalatograph (OPG): a new apparatus for speech production analysis

This paper describes the early development of a device for measuring tongue-palate distance, contact and pressure across the whole of the hard palate. The Optopalatograph (OPG) is similar in principle to the Glossometer and similar in configuration to the Electropalatograph. It uses optical fibres to relay light to and from the palate and distance sensing is acheived by measuring the amount of ...

Effects of Raw Water Quality on the Efficiency of Domestic Reverse Osmosis Apparatus in Khuzestan Province

The aim of this study was the effect of raw water quality on the efficiency of domestic reverse osmosis apparatus in Khuzestan province. The results showed that the purified water quality was related to the quality of entrance raw water. With increasing in salt concentrations (EC) or TDS, purification efficiency was decreased. The cation and anions content of refinery water was related to TDS a...

A versatile nematode water bath apparatus.

T h e activity of nematodes in unstirred water frequently decreases due to the depletion of oxygen from their surrounding microenvironment (1,2,3,). In in vitro studies on the activity of Nothanguina phyllobia T h o r n e we found it essential to prevent this by constantly agitating nematode suspensions. Various physiological processes are undoubtedly affected at oxygen tensions which inhibit a...

A Simple Apparatus for Distilling Water