Results 91 to 100 of about 366,081 (322)

Global biogeography of SAR11 marine bacteria

Molecular Systems Biology, 2012
The ubiquitous SAR11 bacterial clade is the most abundant type of organism in the world's oceans, but the reasons for its success are not fully elucidated. We analysed 128 surface marine metagenomes, including 37 new Antarctic metagenomes. The large size
Mark V Brown, Federico M Lauro, Matthew Z DeMaere, Les Muir, David Wilkins, Torsten Thomas, Martin J Riddle, Jed A Fuhrman, Cynthia Andrews‐Pfannkoch, Jeffrey M Hoffman, Jeffrey B McQuaid, Andrew Allen, Stephen R Rintoul, Ricardo Cavicchioli   +13 more
doaj   +1 more source

Rapid adaptive evolution of colour vision in the threespine stickleback radiation. [PDF]

, 2016
Vision is a sensory modality of fundamental importance for many animals, aiding in foraging, detection of predators and mate choice. Adaptation to local ambient light conditions is thought to be commonplace, and a match between spectral sensitivity and ...
Heckman, Nancy, Owens, Gregory L, Rennison, Diana J, Schluter, Dolph, Veen, Thor   +4 more
core  

Intensity interferometry of single x-ray pulses from a synchrotron storage ring

, 2014
We report on measurements of second-order intensity correlations at the high brilliance storage ring PETRA III using a prototype of the newly developed Adaptive Gain Integrating Pixel Detector (AGIPD).
Becker, J., Franz, H., Gorobtsov, O., Graafsma, H., Klyuev, A., Lorenz, U., Marras, A., Schlage, K., Shabalin, A., Singer, A., Skopintsev, P., Vartanyants, I. A., Wille, H. -C.   +12 more
core   +1 more source

Recent Advancements in Bulk Processing of Rare‐Earth‐Free Hard Magnetic Materials and Related Multiscale Simulations

Advanced Engineering Materials, EarlyView.
This article provides an overview of recent advancements in bulk processing of rare‐earth‐free hard magnetic materials. It also addresses related simulation approaches at different scales. The research on rare‐earth‐free magnetic materials has increased significantly in recent years, driven by supply chain issues, environmental and social concerns, and
Daniel Scheiber, Andrea Bachmaier
wiley   +1 more source

The Role of Geography, Diet, and Host Phylogeny on the Gut Microbiome in the Hawaiian Honeycreeper Radiation

Ecology and Evolution
The animal gut microbiome can have a strong influence on the health, fitness, and behavior of its hosts. The composition of the gut microbial community can be influenced by factors such as diet, environment, and evolutionary history (phylosymbiosis ...
Maria S. Costantini, Elin Videvall, Jeffrey T. Foster, Matthew C. I. Medeiros, John D. Gillece, Eben H. Paxton, Lisa H. Crampton, Hanna L. Mounce, Alex X. Wang, Robert C. Fleischer, Michael G. Campana, Floyd A. Reed   +11 more
doaj   +1 more source

CASTRO: A New Compressible Astrophysical Solver. II. Gray Radiation Hydrodynamics

, 2011
We describe the development of a flux-limited gray radiation solver for the compressible astrophysics code, CASTRO. CASTRO uses an Eulerian grid with block-structured adaptive mesh refinement based on a nested hierarchy of logically-rectangular variable ...
A. Almgren, A. Burrows, Almgren, Burrows, CASTRO User Guide., Fryxell, Hayes, Hayes, Hubeny, hypre Code Project., J. Bell, Krumholz, L. Howell, Lowrie, McCormick, Mihalas, Pomraning, Swesty, Turner, van der Holst, W. Zhang, Zel’Dovich   +21 more
core   +1 more source

Microstructural Evolution and Mechanical Performance of Plasma‐Assisted Hybrid Friction Stir Welded Dissimilar Aluminum–Copper Joints

Advanced Engineering Materials, EarlyView.
Plasma‐assisted hybrid friction stir welding of dissimilar AlCu joints employs localized plasma preheating to balance heat input and enhance plastic flow. The optimized process reduces axial force by up to 35%, refines the microstructure, and achieves ≈96% joint efficiency.
Deepak Kumar Yaduwanshi, Pankaj Shrivastava, Ganesh Chouhan, Velaphi Msomi   +3 more
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

GPU-based ultra-fast direct aperture optimization for online adaptive radiation therapy

, 2010
Online adaptive radiation therapy (ART) has great promise to significantly reduce normal tissue toxicity and/or improve tumor control through real-time treatment adaptations based on the current patient anatomy.
Bazaraa M, Bentley J, Chunhua Men, Earl M A, Fox C, Gu X, Gu X, Hoberock J Bell N, Kokubo M, Langen K M, Li M, Li Y J, Men C, Men C, Steve B Jiang, Wong J R, Wu C, Wu Q J, Xing M Decaudin P Baogang H Xiaopeng Z, Xun Jia, Yan D, Zhang G W   +21 more
core   +1 more source

Design and Prototyping of Topology‐Optimized, Additively Manufactured Lightweight Components for Space Robotic Systems: A Case Study

Advanced Engineering Materials, EarlyView.
The results demonstrate a simulation‐driven workflow that applies LSB topology optimization with additive manufacturing constraints to mission‐specific load cases, integrating European Cooperation for Space Standardization compliant verification and manufacturability to develop structurally efficient rover suspension components.
Stelios K. Georgantzinos, Grigorios Kostopoulos, Eleni Papadopoulou, Stefanos Voulgaris, Alexandra Tseni, Panteleimon Bakalis, Maria N. Gkara, Chara Ch. Mitropoulou, Georgios Kazakis, Alin Munteanu, Jeremi Gancet, Nikos D. Lagaros   +11 more
wiley   +1 more source