Results 91 to 100 of about 486,715 (397)

Secret Chambers: The Insider Story of Cells and Complex Life

Ethnobiology Letters, 2014
Review of Secret Chambers: The Insider Story of Cells and Complex Life. Martin Brasier. 2012. Oxford University Press, UK. Pp. 320 with 15 black and white illustrations and 8 pages of color plates. £16.99 (hardcover). ISBN 9780199644001.
Farid Pazhoohi
doaj   +1 more source

Bayesian phylogenetic estimation of fossil ages

, 2016
Recent advances have allowed for both morphological fossil evidence and molecular sequences to be integrated into a single combined inference of divergence dates under the rule of Bayesian probability.
Drummond, Alexei J., Stadler, Tanja
core   +1 more source

Bayesian total evidence dating reveals the recent crown radiation of penguins [PDF]

, 2016
The total-evidence approach to divergence-time dating uses molecular and morphological data from extant and fossil species to infer phylogenetic relationships, species divergence times, and macroevolutionary parameters in a single coherent framework ...
Drummond, Alexei J., Gavryushkina, Alexandra, Heath, Tracy A., Ksepka, Daniel T., Stadler, Tanja, Welch, David   +5 more
core   +5 more sources

High Thermoelectric Performance in Low‐Cost Cu8SiSxSe6‐x Argyrodite

Advanced Functional Materials, EarlyView.
This study discovers the great potential of Cu8SiSxSe6‐x argyrodites as new, low‐cost, Te‐free thermoelectric materials. The proposed defect scheme suppresses the phase transition, enhances the weighted mobility and optimizes the grain boundary contacts.
Taras Parashchuk, Oleksandr Cherniushok, Bartlomiej Wiendlocha, Janusz Tobola, Raúl Cardoso‐Gil, G. Jeffrey Snyder, Yuri Grin, Krzysztof T. Wojciechowski   +7 more
wiley   +1 more source

Fossil AGN jets as ultra high energy particle accelerators

, 2007
Remnants of AGN jets and their surrounding cocoons leave colossal magnetohydrodynamic (MHD) fossil structures storing total energies ~10^{60} erg. The original active galacic nucleus (AGN) may be dead but the fossil will retain its stable configuration ...
Abbasi, Armengaud, Barwick, Bellan, Benford, Berezinsky, Bird, Connolly, Dunn, Dunn, Ensslin, Ensslin, Falcke, Furlanetto, Gopal-Krishna, Gregory Benford, Greisen, Harari, Heinz, Ip, Ji, Ji, Kronberg, Kronberg, Kronberg, Laing, Lapenta, Lesch, Lesch, Lesch, Lundquist, Lyutikov, McNamara, Melrose, Morganti, Mücke, O'Neill, Ostrowski, Owen, Protheroe, Protheroe, Protheroe, R. J. Protheroe, Rachen, Robinson, Ryu, Saxton, Takeda, Taylor, Taylor, The Pierre Auger Collaboration, Voslamber, Wise, Yamamoto, Zatsepin   +54 more
core   +1 more source

Supercompliant Lattice Boosts n‐type AgSbTe2 Thermoelectrics

Advanced Functional Materials, EarlyView.
The supercompliant lattice design enables the first realization of n‐type electrical transport in AgSbTe2 by overcoming intrinsic electron‐killer defects and exceeding the doping limits imposed by the conventional Hume–Rothery rule. Accordingly, the best performance n‐type Ag0.8Na0.3Sb0.6Bi0.4Te2 sample achieves a low κ of 0.27 W·m−1·K−1 that ...
Ruoyan Li, Shuai Han, Chunyu Zhang, Suyao Liu, Wen Yin, Yuanguang Xia, Pengfei Liu, Zhen‐Hua Ge, Dongyao Zhao, Bingchao Yang, Lulu Huang, Zhi Zhang, Yongsheng Zhang, Yuan Yu, Bangzhi Ge, Chongjian Zhou   +15 more
wiley   +1 more source

Mechanistic phylodynamic models do not provide conclusive evidence that non-avian dinosaurs were in decline before their final extinction

Cambridge Prisms: Extinction
Phylodynamic models can be used to estimate diversification trajectories from time-calibrated phylogenies. Here we apply two such models to phylogenies of non-avian dinosaurs, a clade whose evolutionary history has been widely debated.
Bethany J. Allen, Maria V. Volkova Oliveira, Tanja Stadler, Timothy G. Vaughan, Rachel C. M. Warnock   +4 more
doaj   +1 more source

RX J1548.9+0851, a fossil cluster? [PDF]

, 2012
Fossil galaxy groups are spatially extended X-ray sources with X-ray luminosities above L_X,bol > 10^42 h_50^-2 ergs s^-1 and a central elliptical galaxy dominating the optical, the second-brightest galaxy being at least 2 magnitudes fainter in the R ...
Adelman-McCarthy, Barnes, Biviano, Cypriano, Dariush, D’Onghia, Ebrová, Eigenthaler, Eigenthaler, Evrard, Firth, Girardi, Hartley, Hopkins, Horne, Jacoby, Jones, Khosroshahi, Khosroshahi, Khosroshahi, Koleva, Kurtz, Le Borgne, Mendes de Oliveira, Mendes de Oliveira, Miller, Mukai, Navarro, Osmond, P. Eigenthaler, Pierini, Ponman, Proctor, Prugniel, Ramella, Sales, Santos, Schirmer, Sodré, Springel, Sun, Tonry, Ulmer, Vikhlinin, Voges, W. W. Zeilinger, Wu, Yoshioka   +47 more
core   +1 more source

Treating fossils as terminal taxa in divergence time estimation reveals ancient vicariance patterns in the palpimanoid spiders.

Systematic Biology, 2013
Incorporation of fossils into biogeographic studies can have a profound effect on the conclusions that result, particularly when fossil ranges are nonoverlapping with extant ranges. This is the case in archaeid spiders, where there are known fossils from
Hannah M. Wood, N. Matzke, R. Gillespie, C. Griswold   +3 more
semanticscholar   +1 more source

Coupling Interfacial Redox‐Reactions with In Situ Proton Generation for the Photoelectrochemical Separation of Rare‐Earth Elements

Advanced Functional Materials, EarlyView.
To enhance the sustainability of electrochemical separations for resource recovery, a photoelectrochemical ion recovery system is developed that utilizes renewable solar energy. A composite integrating titianium dioxide nanorods and a redox‐copolymer enables spontaneous cation adsorption and light‐activated redox reactions for regeneration, thus ...
Ki‐Hyun Cho, Wangsuk Oh, Melanie J. Fournier, Xiao Su   +3 more
wiley   +1 more source