Now showing items 11-20 of 169
A Water Maser Flare in W49N: Amplification by a Rotating Foreground Cloud
(IOP PUBLISHING LTD, 1998-12)
We monitored the 22 GHz H2O maser emission toward W49N from December 1989 through May 1990. During this period we observed an outburst in a component at -66.25 km s(-1). The flux density of the flaring component increased ...
R Aquarii: First Detection of Circumstellar SiO Maser Proper Motions
(IOP PUBLISHING LTD, 1997-10)
We have made the first detection of circumstellar SiO maser proper motions in the envelope of a late-type star. Using the Very Long Baseline Array (VLBA), we have obtained observations at four epochs of the 43 GHz, upsilon ...
Do similar communities develop in similar sites? A test with zooplankton structure and function
(Ecological Society of America, 1998-08)
McCune and Alien (1985) asked the question "Will similar forests develop on similar sites?" and concluded that dissimilar old-growth forests had developed on similar sites due to historical factors (colonization, disturbance, ...
Biological integrity: a long-neglected aspect of water resource management
(Ecological Society of America, 1991-02)
Water of sufficient quality and quantity is critical to all life. Increasing human population and growth of technology require human society to devote more and more attention to protection of adequate supplies of water. ...
Cohomology of Finite Groups
(University of Essen, 1992)
This is a short lecture course on the cohomology of finite groups. Topics include Künneth formula, cup products and cohomology ring, differential graded algebras, Evens norm map and the Steenrod operations.
Developing a field of landscape ecotoxicology
(Ecological Society of America, 1996-08)
Since toxicants are spread over ecological landscapes, it seems likely that they have effects at that level of ecological organization. Landscape ecotoxicology examines the effects of toxic chemicals on larger scales than ...
Estimating the consumption and investment demands for housing and their effect on housing tenure status
(MIT Press, 1994-02)
Theoretical work suggests that families live in owner-occupied housing if their investment demand for housing exceeds their consumption demand for housing. Using household data from the 1983 Survey of Consumer Finances, ...
Photogeneration action spectroscopy of neutral and charged excitations in films of a ladder-type poly(para-phenylene)
(American Physical Society, 1999-04-19)
The photogeneration quantum efficiency action spectra of long-lived neutral and charged excitations in films of a ladder-type poly(para-phenylene) were measured. We found that both tripler and polaron action spectra show, ...
Comment on "Evidence for narrow baryon resonances in inelastic pp scattering"
(American Physical Society, 1998-08-10)
Nonuniversal exponents in interface growth - Newman and Swift reply
(American Physical Society, 1998-12-14)