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Article
Economic analyses of implemented tailwater recovery systems in the Lower Mississippi Alluvial Valley
Tailwater recovery (TWR) systems are being implemented on agricultural landscapes to reduce nutrient loss and save water on the landscape for irrigation. These systems are a large financial investment for both...
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Article
Dreidimensionale Analyse nasaler Physiologie
Die menschliche Nase übernimmt einen großen Teil der Präkonditionierung eingeatmeter Luft. Zahlreiche pathologische Veränderungen können die Physiologie der Nase beeinträchtigen. Die Anfänge der Strömungsanaly...
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Article
Drying and Storage Methods Affect Cyfluthrin Concentrations in Exposed Plant Samples
Standard procedures do not exist for drying and storage of plant samples prior to chemical analyses. Since immediate analysis is not always possible, current research examined which plant drying and storage me...
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Article
The role of depth in regulating water quality and fish assemblages in oxbow lakes
We evaluated water quality and fish assemblages in deep (>3.0 m; N = 7) and shallow (<1.5 m; N = 6) floodplain lakes in the intensively cultivated Yazoo River Basin (Mississippi, USA) using indirect gradient mult...
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Article
Diazinon and Permethrin Mitigation Across a Grass–Wetland Buffer
Vegetated buffers of different designs are often used as edge-of-field treatment practices to remove pesticides that may be entrained in agricultural runoff. However, buffer system efficacy in pesticide runoff...
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Article
Effects of Smallmouth Buffalo, Ictiobus bubalus Biomass on Water Transparency, Nutrients, and Productivity in Shallow Experimental Ponds
The smallmouth buffalo Ictiobus bubalus is a native benthivore to floodplain lakes in the Yazoo River Basin, USA. Based on evidence from other benthivorous fish studies we hypothesized high biomasses of I. bubalu...
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Article
Connectedness of land use, nutrients, primary production, and fish assemblages in oxbow lakes
We explored the strength of connectedness among hierarchical system components associated with oxbow lakes in the alluvial valley of the Lower Mississippi River. Specifically, we examined the degree of canonic...
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Article
Preliminary Evidence of Sediment and Phosphorus Dynamics Behind Newly Installed Low-Grade Weirs in Agricultural Drainage Ditches
Low-grade weirs are innovative management strategies that control surface drainage, slow water velocities, and encourage sedimentation in agricultural drainage ditches. There is little information on how low-g...
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Article
Compositional Fluctuations in AlxGa1-xN Layers grown on 6H-SiC (0001) by Metal Organic Vapor Phase Epitaxy
The microstructural evolution of AlxGa1-xN films grown by metalorganic vapor phase epitaxy on 6H-SiC (0001) was studied by means of X-ray diffraction, atomic force microscopy and transmission electron microscopy ...
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Article
Investigation of Green Emitting Monolithic II-VI Vertical Cavity Surface Emitting Laser
In this paper, we are investigating the growth of a ZnSe based vertical cavity surface emitting laser (VCSEL). Undoped and p-type doped distributed Bragg reflectors (DBRs) with reflectivities exceeding 99% hav...
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Article
Effect of Three Insecticides and Two Herbicides on Rice (Oryza sativa) Seedling Germination and Growth
Rice (Oryza sativa L.) is one of the most important food crops worldwide. However, it is also a valuable tool in assessing toxicity of organic and inorganic compounds. For more than 20 years, it has been an appro...
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Article
Ability of Four Emergent Macrophytes to Remediate Permethrin in Mesocosm Experiments
Increased focus is being placed on the ability of native vegetation to mitigate potential harmful effects of agricultural runoff, especially pyrethroid insecticides. Replicate 379 L Rubbermaid tubs (1.25 m [l]...
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Article
Diazinon Accumulation and Dissipation in Oryza sativa L. Following Simulated Agricultural Runoff Amendment in Flooded Rice Paddies
Flooded post-harvest rice paddies were examined as systems for reducing diazinon (organophosphate insecticide) concentrations in stormwater runoff. Two paddies were cultivated in Oryza sativa L. and amended with ...
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Chapter and Conference Paper
Electron microscopic investigations of the polymer/mineral composite material nacre
Nacre of the mollusc Haliotis laevigata was investigated using transmission electron microscopy (TEM). Nacre, the inner iridescent layer of mollusc shells, is a typical example for a material which is formed by b...
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Chapter and Conference Paper
Interaction of Stacking Faults in Wurtzite a-Plane GaN on r-Plane Sapphire
The defect structure in a-plane GaN films grown on r-plane sapphire distinguishes itself significantly from the one found in c-plane GaN. Transmission electron microscopy studies on a-plane GaN films grown by hyd...
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Chapter and Conference Paper
Concentration Evaluation in Nanometre-Sized In x Ga1-x N Islands Using Transmission Electron Microscopy
In this work the indium concentration of uncapped InGaN samples is measured by three different transmission electron microscopy approaches which are based on measurement of local lattice plane distances. In th...
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Article
Anti-diffusion barriers for gold-based metallization to GaN
We propose a new metallization scheme to p-GaN, where thin-film transition metal nitrides have been applied to improve thermal stability of gold-based metallization. In this metallization scheme the Pd/Au bila...
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Article
Resonant modes in monolithic nitride pillar microcavities
GaN-based airpost pillar microcavities are realized by focused-ion beam etching starting from an all-epitaxially grown vertical-cavity surface-emitting laser structure. Pillar diameters below 1 μm are well co...
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Article
Roan (Hippotragus equinus) population decline in Kruger National Park, South Africa: influence of a wetland boundary
Effective management of grazers requires understanding of the mechanisms influencing population declines. Roan antelope, a specialist grazer, has declined in population numbers within Kruger National Park, Sou...
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Chapter and Conference Paper
Characterization and structuring of nitride-based heterostructures for vertical-cavity surface-emitting lasers
A new approach for nitride-based distributed Bragg reflectors as mirrors for vertical-cavity surface-emitting lasers was investigated by means of transmission electron microscopy. These layers consisted of mul...
