Improving Simulation Model Accuracy for Friction Stir Welding of AA 2219.

Modeling of friction stir welding (FSW) is challenging, as there are large gradients in both strain rate and temperature (typically between 450 and 500 °C in aluminum alloys) that must be accounted for in the constitutive law of the material being joined. Constitutive laws are most often calibrated using flow stresses from hot compression or hot torsion testing, where strain rates are much lower than those seen in the stir zone of the FSW process. As such, the current work employed a recently developed method to measure flow stresses at high strain rates and temperatures in AA 2219-T67, and these data were used in the development of a finite element (FE) simulation of FSW.

Subthreshold electric fields bidirectionally modulate neurotransmitter release through axon polarization.

1.Subthreshold electric fields modulate brain activity and demonstrate potential in several therapeutic applications. Electric fields are known to generate heterogenous membrane polarization within neurons due to their complex morphologies.

Improving Mass-Rearing Techniques for Releases of , a Biological Control Agent for Old World Climbing Fern ().

The United States Department of Agriculture-Invasive Plant Research Laboratory started limited production of a biological control mite, , in 2008 for release against the invasive fern . Mass-rearing and release of the biological control agent was initiated in 2014 as part of the Comprehensive Everglades Restoration Plan to address the challenge of low establishment rates observed from 2008 to 2010. In late 2021, we critically analyzed our rearing protocols, focusing on aging galls and increasing plant vigor.

Identification of ethanol analgesia quantitative trait loci and candidate genes in BXD recombinant inbred mouse lines.

Alcohol consumption produces acute analgesic effects, and people experiencing pain conditions may drink alcohol to alleviate discomfort. However, tolerance to the analgesic properties of alcohol could prompt escalating consumption and dependence. Both nociception and alcohol-induced analgesia are under significant genetic control.