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Study Of Iron In Magnetotactic Bacteria, Richard B. Frankel, Richard P. Blakemore

Physics

Bacteria have recently been discovered directing their movements by sensing the earth's magnetic field. They contain arrays of crystals of lodestone or magnetite which they synthesize from iron in the ocean. The discovery of the same type of crystals in the abdomens of honey bees and the brains of homing pigeons suggests that nature is not oblivious to the earth's magnetic field. The biological mechanism for sensing magnetic fields has never been determined. These bacteria are capable of biologically synthesizing highly purified single domain magnets that would be very expensive to produce chemically.

The tiny perfect magnetite crystals made by …

December 4, 1980 Cal Poly Report, Public Affairs Office

Cal Poly Report

No abstract provided.

Mustang Daily, November 25, 1980

Cal Poly Student Newspaper

Student newspaper of California Polytechnic State University, San Luis Obispo, CA.

November 20, 1980 Cal Poly Report, Public Affairs Office

Cal Poly Report

No abstract provided.

Mustang Daily, November 19, 1980

Cal Poly Student Newspaper

Student newspaper of California Polytechnic State University, San Luis Obispo, CA.

November 13, 1980 Cal Poly Report, Public Affairs Office

Cal Poly Report

No abstract provided.

November 6, 1980 Cal Poly Report, Public Affairs Office

Cal Poly Report

No abstract provided.

Mustang Daily, October 29, 1980

Cal Poly Student Newspaper

Student newspaper of California Polytechnic State University, San Luis Obispo, CA.

October 23, 1980 Cal Poly Report, Public Affairs Office

Cal Poly Report

No abstract provided.

Mustang Daily, October 23, 1980

Cal Poly Student Newspaper

Student newspaper of California Polytechnic State University, San Luis Obispo, CA.

October 16, 1980 Cal Poly Report, Public Affairs Office

Cal Poly Report

No abstract provided.

Mustang Daily, October 9, 1980

Cal Poly Student Newspaper

Student newspaper of California Polytechnic State University, San Luis Obispo, CA.

Mustang Daily, October 8, 1980

Cal Poly Student Newspaper

Student newspaper of California Polytechnic State University, San Luis Obispo, CA.

Thermal Gasification Of Densified Sewage Sludge And Solid Waste, Samuel A. Vigil, George Tchobanoglous

Civil and Environmental Engineering

The disposal of sewage sludge in an economic and environmentally acceptable manner is a problem common to all communities that have municipal wastewater treatment facilities. Similarly, all communities are faced with the disposal of increasing quantities of solid waste. The co-disposal of sludge and solid waste in a common facility is a potential solution to both of these problems. The results of an experimental program to verify the feasibility of the gasification process for the co-disposal of densified sludge and source separated solid waste are presented in this paper.

Mustang Daily, October 1, 1980

Cal Poly Student Newspaper

Student newspaper of California Polytechnic State University, San Luis Obispo, CA.

Mustang Daily, September 26, 1980

Cal Poly Student Newspaper

Student newspaper of California Polytechnic State University, San Luis Obispo, CA.

September 25, 1980 Cal Poly Report, Public Affairs Office

Cal Poly Report

No abstract provided.

Mustang Daily, September 22, 1980, Section A1

Cal Poly Student Newspaper

Student newspaper of California Polytechnic State University, San Luis Obispo, CA.

Bulk Magnetic Properties Of Magnetotactic Bacteria, C. R. Denham, R. P. Blakemore, Richard B. Frankel

Physics

Bulk magnetization measurements at room temperature of freeze dried magnetotactic bacterial cells, nonmagnetotactic bacterial cells, and extracted magnetosomes from magnetotactic cells are presented. The role of the magnetosome in the magnetotactic response of swimming cells is discussed.

August 21, 1980 Cal Poly Report, Public Affairs Office

Cal Poly Report

No abstract provided.

Summer Mustang, August 21, 1980

Cal Poly Student Newspaper

Student newspaper of California Polytechnic State University, San Luis Obispo, CA.

Summer Mustang, August 14, 1980

Cal Poly Student Newspaper

Student newspaper of California Polytechnic State University, San Luis Obispo, CA.

August 7, 1980 Cal Poly Report, Public Affairs Office

Cal Poly Report

No abstract provided.

July 24, 1980 Cal Poly Report, Public Affairs Office

Cal Poly Report

No abstract provided.

South-Seeking Magnetotactic Bacteria In The Southern Hemisphere, R. P. Blakemore, Richard B. Frankel, Ad. J. Kalmijn

Physics

Several species of aquatic bacteria which orient in the Earth's magnetic field and swim along magnetic field lines in a preferred direction (magnetotaxis) have been observed in marine and freshwater sediments of the Northern Hemisphere^1,2. Their orientation is due to one or more intracytoplasmic chains of single-domain magnetite particles³. These linearly arranged particles impart a net magnetic dipole moment to the bacterium, parallel to the axis of motility. Northern Hemisphere magnetotactic bacteria with unidirectional motility swim consistently in the direction of the magnetic field, that is, to the geomagnetic North^1,2,4. This implies that their …

July 10, 1980 Cal Poly Report, Public Affairs Office

Cal Poly Report

No abstract provided.

June 26, 1980 Cal Poly Report, Public Affairs Office

Cal Poly Report

No abstract provided.

June 12, 1980 Cal Poly Report, Public Affairs Office

Cal Poly Report

No abstract provided.

Mustang Daily, June 6, 1980

Cal Poly Student Newspaper

Student newspaper of California Polytechnic State University, San Luis Obispo, CA.

June 5, 1980 Cal Poly Report, Public Affairs Office

Cal Poly Report

No abstract provided.