Publications by authors named "D Larry Sparks"
Fish in the wild often contend with complex flows that are produced by natural and artificial structures. Research into fish interactions with turbulence often investigates metrics such as turbulent kinetic energy (TKE) or fish positional location, with less focus on the specific interactions between vortex organization and body swimming kinematics. Here, we compared the swimming kinematics of rainbow trout (Oncorhynchus mykiss) holding station in flows produced by two different 3×5 cylinder arrays.
View Article and Find Full Text PDFGreen rusts (GR) are mixed-valence iron (Fe) hydroxides which form in reducing redox environments like riparian and wetland soils and shallow groundwater. In these environments, silicon (Si) can influence Fe oxides' chemical and physical properties but its role in GR formation and subsequent oxidative transformation have not been studied starting at initial nucleation. Green rust sulfate [GR(SO)] and green rust carbonate [GR(CO)] were both coprecipitated from salts by base titration in increasing % mol Si (0, 1, 10, and 50).
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- Cetaceans, like bottlenose dolphins, are important indicators of marine ecosystem health, and their population dynamics can reveal environmental changes.
- A study analyzed the presence of 24 polycyclic aromatic hydrocarbons (PAHs) and 7 polychlorinated biphenyls (PCBs) in the tissues of 138 stranded bottlenose dolphins in the Mississippi Sound over an 11-year period.
- The findings showed that while certain contaminants like naphthalene were detectable in dolphin tissues, there were no significant changes in chemical levels associated with the unusual mortality event in 2019 that affected these dolphins.
Predatorprey interactions are fundamental to ecological and evolutionary dynamics. Yet, predicting the outcome of such interactions-whether predators intercept prey or fail to do so-remains a challenge. An emerging hypothesis holds that interception trajectories of diverse predator species can be described by simple feedback control laws that map sensory inputs to motor outputs.
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- - The MET receptor is crucial for various biological processes, but its dysregulation is linked to cancers like non-small cell lung cancer and renal cancer, highlighting a significant medical need for better treatment options.
- - Current MET inhibitors face challenges such as resistance and toxicity, particularly in treating brain metastases, which further emphasizes the demand for improved therapies.
- - Researchers are developing a new class of MET inhibitors designed to effectively target brain tumors and specific cancer mutations, which showed promising results in preclinical models, significantly extending survival in treated animals.