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Articles 31 - 38 of 38
Full-Text Articles in Entire DC Network
Distribution, Composition And Functions Of Gelatinous Tissues In Deep-Sea Fishes, Mackenzie E. Gerringer, Jeffrey C. Drazen, Thomas D. Linley, Adam P. Summers, Alan J. Jamieson, Paul H. Yancey
Distribution, Composition And Functions Of Gelatinous Tissues In Deep-Sea Fishes, Mackenzie E. Gerringer, Jeffrey C. Drazen, Thomas D. Linley, Adam P. Summers, Alan J. Jamieson, Paul H. Yancey
Biology
Many deep-sea fishes have a gelatinous layer, or subdermal extracellular matrix, below the skin or around the spine. We document the distribution of gelatinous tissues across fish families (approx. 200 species in ten orders), then review and investigate their composition and function. Gelatinous tissues from nine species were analysed for water content (96.53 ± 1.78% s.d.), ionic composition, osmolality, protein (0.39 ± 0.23%), lipid (0.69 ± 0.56%) and carbohydrate (0.61 ± 0.28%). Results suggest that gelatinous tissues are mostly extracellular fluid, which may allow animals to grow inexpensively. Further, almost all gelatinous tissues floated in cold seawater, thus their lower …
Water Quality And Physical Hydrogeology Of The Amarapura Township, Mandalay, Myanmar, Michael Grzybowski
Water Quality And Physical Hydrogeology Of The Amarapura Township, Mandalay, Myanmar, Michael Grzybowski
Graduate Research Theses & Dissertations
Mandalay is a major city in central Myanmar with a high urban population that lacks a wastewater management system, a solid waste disposal process, and access to treated drinking water. The purpose of this study is to investigate the groundwater quality of local dug and tube wells, determine quantitative data on characteristics of the Amarapura Aquifer, and compare seasonal variations in groundwater flow and quality. Major ion chemistry data was collected during the dry and wet seasons, and analyzed using ion chromatography to identify indicators of wastewater contamination to the shallow aquifer and compare seasonal variations in groundwater chemistry. An …
Universality And Chaoticity In Ultracold K+Krb Chemical Reactions, J. F.E. Croft, C. Makrides, M. Li, A. Petrov, B. K. Kendrick, Balakrishnan Naduvalath, S. Kotochigova
Universality And Chaoticity In Ultracold K+Krb Chemical Reactions, J. F.E. Croft, C. Makrides, M. Li, A. Petrov, B. K. Kendrick, Balakrishnan Naduvalath, S. Kotochigova
Chemistry and Biochemistry Faculty Research
A fundamental question in the study of chemical reactions is how reactions proceed at a collision energy close to absolute zero. This question is no longer hypothetical: quantum degenerate gases of atoms and molecules can now be created at temperatures lower than a few tens of nanokelvin. Here we consider the benchmark ultracold reaction between, the most-celebrated ultracold molecule, KRb and K. We map out an accurate ab initio ground-state potential energy surface of the K2Rb complex in full dimensionality and report numerically-exact quantum-mechanical reaction dynamics. The distribution of rotationally resolved rates is shown to be Poissonian. An analysis of …
Evans Syndrome Complicated By Intratubular Hemoglobin Cast Nephropathy, Ivan Gonzalez, Rehan Rais, Joseph P. Gaut, Louis P. Dehner
Evans Syndrome Complicated By Intratubular Hemoglobin Cast Nephropathy, Ivan Gonzalez, Rehan Rais, Joseph P. Gaut, Louis P. Dehner
Open Access Publications
No abstract provided.
Differences In Survival Times, By Gender, Among Those Diagnosed With Necrotizing Fasciitis, Ashley Elizabeth Hill
Differences In Survival Times, By Gender, Among Those Diagnosed With Necrotizing Fasciitis, Ashley Elizabeth Hill
Walden Dissertations and Doctoral Studies
Necrotizing fasciitis infections have high mortality rates especially when treatment is delayed. Despite the abundance of research in many areas of necrotizing fasciitis infection, there are limited and conflicting studies focusing on gender-related outcomes for those diagnosed and died with necrotizing fasciitis infection. The purpose of this study was to determine the association that gender plays on survival time of patients who have been diagnosed with necrotizing fasciitis using a cross-sectional study design. Succeeding the conceptual design of the life course model, the research question tested whether there was a significant difference in survival time between the genders while in …
Frontiers In Otolith Chemistry: Insights, Advances And Applications, B. D. Walther, K. E. Limburg, C. M. Jones, J. J. Schaffler
Frontiers In Otolith Chemistry: Insights, Advances And Applications, B. D. Walther, K. E. Limburg, C. M. Jones, J. J. Schaffler
OES Faculty Publications
The rapid proliferation of publications employing chemical assays of fish hard parts, and otoliths in particular, has led to many novel insights into the migration patterns, life history strategies and mixed stock dynamics of fishes across the globe (Campana et al., 2000; Elsdon et al., 2008; Walther & Limburg, 2012). These insights include uncovering diverse migratory strategies within species and populations (Kerr et al., 2009; Hogan et al., 2014; Schoen et al., 2016), quantifying rates of mixing among stocks across management boundaries (Rooker et al., 2008; Walther & Thorrold, 2010) and estimating the relative …
Beyond Zar: The Use And Abuse Of Classification Statistics For Otolith Chemistry, C. M. Jones, M. Palmers, J. J. Schaffler
Beyond Zar: The Use And Abuse Of Classification Statistics For Otolith Chemistry, C. M. Jones, M. Palmers, J. J. Schaffler
OES Faculty Publications
Classification method performance was evaluated using otolith chemistry of juvenile Atlantic menhaden Brevoortia tyrannus when assumptions of data normality were met and were violated. Four methods were tested [linear discriminant function analysis (LDFA), quadratic discriminant function analysis (QDFA), random forest (RF) and artificial neural networks (ANN)] using computer simulation to determine their performance when variable-group means ranged from small to large and their performance under conditions of typical skewness to double the amount of skewness typically observed. Using the kappa index, the parametric methods performed best after applying appropriate data transformation, gaining 2% better performance with LDFA performing slightly better …
A Qualitative Comparison Of General Chemistry And Advanced Placement Chemistry Students' Misconceptions Regarding Solution Chemistry, Megan J. Vandersee
A Qualitative Comparison Of General Chemistry And Advanced Placement Chemistry Students' Misconceptions Regarding Solution Chemistry, Megan J. Vandersee
Dissertations and Theses @ UNI
This study focused on identifying misconceptions which high school AP and collegiate general chemistry students hold with regards to solution chemistry topics and comparing the misconceptions held by each student group. Previous research has found that misconceptions can greatly impact students’ understanding of material and have a negative impact on student learning. However, not all solution chemistry topics had been explored in previous research. In addition, it has been suggested that collegiate students have reached a higher level of cognitive development as they are older and more advanced in their studies. If this is the case, one could assume that …