A Sulphureted Hydrogen Apparatus

The hydrogen-sensing apparatus in Ralstonia eutropha.

Molecular hydrogen is widely used by microorganisms as a source of energy. One of the best studied aerobic hydrogen oxidizers, the beta-proteobacterium Ralstonia eutropha (formerly Alcaligenes eutrophus), harbors two distinct [NiFe]-hydrogenases which catalyze the heterolytic cleavage of H2 into 2H+ and 2e-. The genes encoding the hydrogenase subunits are arranged in two large operons together ...

Method and an Apparatus for Hydrogen Production from Water

Method and Apparatus for Hydrogen Production from Water

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...

A Simple Anæsthetic Apparatus

In the apparatus about to be described I make no claim to originality in design. It has been my endeavour to find the simplest form of anaesthetic apparatus which could, with slight adaptation, be used with reliability for intra-tracheal, intra-pharyngeal, or intra-nasal induction using ether with air or oxygen. This apparatus has been in constant use for the past 33r years in certain Indian mi...