Progress report on plant studies: the fixation and absorption of fission products by plants /

Bibliography: p. 6.

Fixation of fission products : a literature search /

"May 1960."

Report of the Public Meeting on Genetic Engineering for Nitrogen Fixation, held at the National Academy of Sciences, Washington, D.C., October 5-6, 1977 ; edited by Alexander Hollaender.

Mode of access: Internet.

A comparison of the results obtained by the complement fixation test for the diagnosis of syphilis performed according to the new technique of Kolmer and the technique of the California state hygienic laboratory,

Thesis (M.A.)--Univ. of California. Dec. 1922.

Examen des conciles qui ont été célebrés depuis la primitive église : conséquences naturelles qui en dérivent, et fixation des points de morale évangélique que découlent de ces conséquences /

Mode of access: Internet.

Titles of literature concerning the fixation of free nitrogen by plants /

In v. 37 of a series of botanical tracts collected and bound together by Rev. Julius A. Nieuwland, University of Notre Dame.

A Guide to the performance of the standardized diagnostic complement fixation method and adaptation to micro test /

"Based on Public Health Monograph No. 74, Standardized Diagnostic Complement Fixation Method and Adaptation to Micro Test."

A manual for conducting the complement-fixation test for anaplasmosis; for use by laboratories engaged in the serological diagnosis of anaplasmosis.

Mode of access: Internet.

Physical and chemical data of nitrogen fixation.

Mode of access: Internet.

Nitrogen fixation in alfalfa : responses to bidirectional selection for associated characteristics /

"Issued December 1981"--2d prelim. page.

The diagnosis of glanders by complement fixation /

"April 7, 1911."

Effect of salinity on growth, pigmentation, N2 fixation and alkaline phosphatase activity of cultured Trichodesmium sp

Trichodesmium sp. isolated from the Great Barrier Reef lagoon was cultured in artificial seawater media containing a range of salinities. Trichodesmium sp. actively grew over a wide range of salinities (22 to 43 psu) and hence can be classed as euryhaline. Maximum growth occurred with salinities in the range 33 to 37 psu. Chl a content and alkaline phosphatase activity were found to increase with salinity over the range 22 to 43 psu, but the N-2 fixation rate was reduced at salinities below and above the range for maximum growth. Growth in media exhibiting maximum growth was characterised by well-dispersed cultures of filaments, while significant aggregations of filaments formed in other media. It is proposed that the tendency for Trichodesmium filaments to aggregate in media with salinities outside the range for maximum growth is an opportunistic response to a deficiency of cellular nitrogen, which results from the reduced N-2 fixation rates, and the aggregation occurs in order to enhance the uptake of combined N released within the aggregates and/or the N-2 fixation within the aggregates.

Factors affecting N2 fixation by the cyanobacterium Trichodesmium sp. GBRTRLI101

Various factors affecting N-2 fixation of a cultured strain of Trichodesmium sp. (GBRTRLI101) from the Great Barrier Reef Lagoon were investigated. The diurnal pattern of N2 fixation demonstrated that it was primarily light-induced although fixation continued to occur for at least 1 h in the dark in samples that had been actively fixing N-2. N-2 fixation was dependent on the light intensity and stimulated more by white light when compared with blue, green, yellow and red light whereas rates of N-2 fixation decreased most under red light. Inorganic phosphorous concentrations in the lower range of treatments up to 1.2 muM significantly stimulated N-2 fixation and further additions promoted little or no increase in N-2 fixation. Organic phosphorous (Na-glycerophosphate) also stimulated N-2 fixation rates. Added combined nitrogen (NH4+, NO3-, urea) of 10 muM did not inhibit N-2 fixation in short-term studies (first generation), however it was depressed in the long-term studies (fifth generation). (C) 2003 Federation of European Microbiological Societies. Published by Elsevier Science B.V. All rights reserved.