The primary objective of this thesis is to study, characterize
and compare four types of Scenedesmus obliquus pigment mutants with
the wild-type strain. The specific nature of the carotenoids synthesized
in both heterotrophically and myxotrophically-grown cells, Hill
reaction activity, photoreduction activity, and total photosynthetic
activity of these cells are examined....
Three DCMU resistant mutants of the green alga Scenedesmus
obliquus D₃ are characterized. The mutants exhibit a ten fold
greater resistance to DCMU than the wild type strain; this is
comparable to the level of DCMU resistance detected in other
DCMU resistant algae. In whole cell reactions, as well as...
The photosynthetic activities, the pigmentation and the chloroplast
membrane polypeptides of several mutants of the green alga, Scenedesmus
obliquus, with complete or limited deficiencies in the light-harvesting
complex of photosystem II are characterized and compared to those of the
normal phenotype.. The principal phenotype examined in this study, K0 -9,...
Manganese has been known to be essential for photosynthesis
for almost 30 years. Subsequent experimentation
indicated a definite function for manganese in oxygen evolution.
However, the mode of action of manganese and
further localization of its site of action have not been
determined.
Ten years ago it was demonstrated that...
The 2010 U.S. health reforms expanded health insurance access to millions of Americans, mainly through an unprecedented expansion of Medicaid eligibility to those with low incomes. Not all states chose to expand their programs, resulting in disparate health-benefit access nationally. This study uses quantitative and qualitative analyses to explore the...
Mountainous headwater streams make up ~80 % of stream length globally and are strongly connected with catchment hillslopes and riparian areas, which can influence water quantity, quality, and availability for downstream uses. Accordingly, effective management of headwater streams and riparian zones to maintain desired ecosystem services downstream is critical, particularly...
A one-mile section of a newly constructed forest road in Northwest Oregon was analyzed for various aspects of subgrade and surface strength and their association with the formation of ruts during the first hauling season. Field and laboratory tests were completed on the road and the road materials to determine...
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Kevin Boston
A one-mile section of a newly constructed forest road in Northwest Oregon was
Total US lumber production in 2011 was 77.9 million cubic meters. Its primary use was for housing and construction. There is a growing concern that the structural properties for wood are being reduced as trees are harvested at much younger ages as the wood supply shifts from older to younger...