Respiratory infections caused by nontuberculous mycobacteria (NTM), especially Mycobacterium avium, can lead to progressive, recurrent disease that is refractory to therapy. Bacterial biofilms are intrinsically resistant to a variety of stressors and pressures, including host killing mechanisms and antibiotic therapy. Though it is becoming increasingly evident that NTM biofilms are...
This study was initiated to determine the concentration
of magnesium and calcium in dividing eggs of the sea
urchin Stroncavocentrotus purpuratus and to explore the
relationship between these ions and mitotic events.
Samples of developing eggs, maintained at 15°C, were
taken at ten-minute intervals from fertilization through
the second cleavage,...
The leaching of water soluble phenolic compounds from
cold stressed Rhododendron leaves was found to be a reliable
indicator of tissue damage. In sublethally stressed leaf
tissues, more and novel phenolic compounds appeared and were
hypothesized to be precursors of cell wall components such
as lignin and suberin. Subsequent radiolabeling...
Research was undertaken to describe the teaching and learning
of science in a non-Western village with particular attention paid to
cultural parameters. Cognitive elements in a Philippine (Tagalog)
village and school were analyzed.
The local language was studied for its capacity of transmitting
scientific information. Verbal interaction in the science...
Lilacs are a group of ornamental trees and shrubs in the Oleaceae family consisting of 22 to 30 species. There are six series within genus Syringa: Pubescentes, Villosae, Ligustrae, Ligustrina, Pinnatifoliae, and Syringa. Fertility and cross-compatibility among cultivars, species, and series have yet to be formally investigated. Over three years,...
The use of Native American fire regimes evolved in the Klamath-Siskiyou bioregion over millennia. A mixture of Native American and Euro-American socio-cultural management has developed from adaptations to climate, topography, ecological processes, and land use practices. This research incorporates Traditional Ecological Knowledge (TEK) to partially examine the role of tribal...