Results 111 to 120 of about 126,743 (307)

Extremely low priming doses of x radiation induce an adaptive response for chromosomal inversions in pKZ1 mouse prostate

, 2006
An adaptive response is a response to a stress such as radiation exposure that results in a lower than expected biological response. We describe an adaptive response to X radiation in mouse prostate using the pKZ1 chromosomal inversion assay.
Day, T., Bhat, Madhava, Sykes, Pamela Joy, Zeng, G., Day, Tanya Kate, Turner, D., Scott, Bobby R, Hooker, A., Hooker, Antony Michael, Zeng, Guoxin, Turner, David Richard, Bhat, M., Scott, B., Sykes, P.   +13 more
core   +1 more source

Evidence for adaptive radiation from a phylogenetic study of plant defenses [PDF]

, 2009
One signature of adaptive radiation is a high level of trait change early during the diversification process and a plateau toward the end of the radiation.
Rasmann, S., Hastings, Amy P., Halitschke, R., Rabosky, D., Rasmann, Sergio, Agrawal, Anurag A., Rabosky, Daniel L., Halitschke, Rayko, Rabosky, D.L., Agrawal, A., Fishbein, M., Agrawal, A.A., Fishbein, Mark, Hastings, A.P., Hastings, A.   +14 more
core   +1 more source

Low‐Cost, Large‐Scale Nanoporous Metals by Mechanical Alloying, Oxide Reduction, and Dealloying of Powders

Advanced Engineering Materials, EarlyView.
Powder metal processing provides scalable advantages in nanoporous (np) metal development. Mechanical alloying is used to produce unique precursors for hybrid nanopore formation by oxide reduction and dealloying. As demonstrated in np Ag, this approach improves process efficiency while promoting smaller ligaments and larger pores, both of which are ...
Mark A. Atwater, Oliver A. Fowler
wiley   +1 more source

Non-random mating behaviour between diverging littoral and pelagic three-spined sticklebacks in an invasive population from Upper Lake Constance

Royal Society Open Science
Adaptive divergence and increased genetic differentiation among populations can lead to reproductive isolation. In Lake Constance, Germany, a population of invasive three-spined stickleback (Gasterosteus aculeatus) is currently diverging into littoral ...
Tobias Zeidler, Albert Ros, Samuel Roch, Arne Jacobs, Juergen Geist, Alexander Brinker   +5 more
doaj   +1 more source

On the Origin and Trigger of the Notothenioid Adaptive Radiation

PLoS ONE, 2011
Adaptive radiation is usually triggered by ecological opportunity, arising through (i) the colonization of a new habitat by its progenitor; (ii) the extinction of competitors; or (iii) the emergence of an evolutionary key innovation in the ancestral lineage.
Matschiner, Michael, Hanel, Reinhold, Salzburger, Walter   +2 more
openaire   +5 more sources

Characterization of Aluminized Layers on Inconel‐738 Alloy: Microstructure, Modeling of Aluminizing Kinetics, and Thermal Behavior

Advanced Engineering Materials, EarlyView.
This study explored how effective nickel aluminide coatings are obtained in providing oxidation resistance applied to the Inconel 738 alloy, modeling with diffusion models. In the present study, kinetics and thermal behavior of the Inconel 738 alloy were studied by the low‐temperature thermoreactive aluminizing process, which was carried out at 625°C ...
Gozde Celebi Efe, Tuba Yener, Suayb Cagri Yener, Mourad Keddam, Cuma Bindal   +4 more
wiley   +1 more source

Meristic co‐evolution and genomic co‐localization of lateral line scales and vertebrae in Central American cichlid fishes

Ecology and Evolution
Meristic traits are often treated as distinct phenotypes that can be used to differentiate and delineate recently diverged species. For instance, the number of lateral line scales and vertebrae, two traits that vary substantially among Neotropical ...
Nicolas Ehemann, Paolo Franchini, Axel Meyer, C. Darrin Hulsey   +3 more
doaj   +1 more source

Repeated adaptive divergence of microhabitat specialization in avian feather lice

BMC Biology, 2012
Background Repeated adaptive radiations are evident when phenotypic divergence occurs within lineages, but this divergence into different forms is convergent when compared across lineages.
Johnson Kevin P, Shreve Scott M, Smith Vincent S   +2 more
doaj   +1 more source

Prediction of Surface Topography Parameters in Direct Laser Interference Patterning of Stainless Steel Using Infrared Monitoring and Convolutional Neural Networks

Advanced Engineering Materials, EarlyView.
This study presents an infrared monitoring approach for direct laser interference patterning (DLIP) combined with a convolutional neural network (CNN). Thermal emission data captured during structuring are used to predict surface topography parameters.
Lukas Olawsky, Marcelo Sallese, Leander Kläber, Clemens Kuhn, Keming Du, Andrés Fabián Lasagni   +5 more
wiley   +1 more source

Zein‐Based Adhesives: Sustainable Extraction and Application in Bioadhesive Technologies

Advanced Engineering Materials, EarlyView.
Zein is extracted from corn gluten meal using a simple and scalable process with high yield (~90%). The resulting protein is applied in bioadhesives modified with Ca2+ and Fe3+ ions, exhibiting substrate‐dependent adhesion. The findings demonstrate competitive bonding performance and highlight the role of ionic interactions in tuning adhesion ...
Paula Bertolino Sanvezzo, Daniela Winsley Valereto Friozi, Vinícius de Oliveira, Marcia Cristina Branciforti   +3 more
wiley   +1 more source