Riparian zones are ecotones between terrestrial and aquatic ecosystems. Processes in streams are strongly influenced by riparian forest communities, age, stage and structure. Temperate forests across much of North America, including riparian areas, are recovering from historic land clearing with many stands in the stem-exclusion phase of development in which...
Intracellular delivery of mRNA holds great potential for vaccine and therapeutic discovery and development. This is realized by the preeminent role mRNA is playing in the record-breaking pace of SARS-CoV-19 vaccine development. Recent advances in chemical modifications of mRNA have enabled high-efficiency gene expression with superior spatiotemporal control while eliminating...
The work presented in this thesis is concerned with the
effect of several antibiotics and quaternary ammonium
sanitizers upon growth of lactic acid bacteria. Section I
reports the purification of beta-lactamase from Lactococcus
cremoris PR-108, by ion exchange chromatography, using the
chromogenic substrate pyridine-2-azo-p-dimethylaniline
(PADAC) as the enzymatic indicator. Section...
Development of long-range nuclear weapons in recent years and
the subsequent threat of nuclear war has led to an increased awareness
of the need for civilian protection. Adequate shelter design can
provide substantial protection against delayed radioactive fallout.
Protection can generally be greatly increased by more massive roof
construction to...
The design, development, and utilization of a direct shear test
apparatus is presented in this thesis. The effectiveness of the
device for determining the friction angle stress state parameter is
studied. Two materials, alumina and uranium dioxide, were tested.
Alumina microspheres were employed in the initial experiments
to simulate the...
As ocean ecosystems continue to deteriorate in the face of human induced pressures, marine management professionals are increasingly being urged to predict the impacts of various activities on ocean ecosystems. Many ecosystem interactions are still not adequately understood, so managers often turn to scientists to provide data and analysis on...