Results 81 to 90 of about 1,382,172 (317)

Mixed‐Metal Promotion in a Manganese‐Molybdenum Oxynitride as Catalyst to Integrate C─C and C─N Coupling Reactions for the Direct Synthesis of Acetonitrile from Syngas and Ammonia

Advanced Materials, EarlyView.
Transition metal oxy/carbo‐nitrides show great promise as catalysts for sustainable processes. A Mn‐Mo mixed‐metal oxynitride attains remarkable performance for the direct synthesis of acetonitrile, an important commodity chemical, via sequential C─N and C─C coupling from syngas (C1) and ammonia (N1) feedstocks.
M. Elena Martínez‐Monje, Wilson Henao, Tania Rodenas, Patricia Concepción, Virginia Pérez Dieste, Alexander Missyul, Giovanni Agostini, Gonzalo Prieto   +7 more
wiley   +1 more source

Hominin evolution was caused by introgression from Gorilla

, 2018
The discovery of Paranthropus deyiremeda in 3.3-3.5 million year old fossil sites in Afar, together with 30% of the gorilla genome showing lineage sorting between humans and chimpanzees, and a NUMT ("nuclear mitochondrial DNA segment") on chromosome 5 ...
Nygren, Johan
core   +1 more source

Beyond Presumptions: Toward Mechanistic Clarity in Metal‐Free Carbon Catalysts for Electrochemical H2O2 Production via Data Science

Advanced Materials, EarlyView.
Metal‐free carbon catalysts enable the sustainable synthesis of hydrogen peroxide via two‐electron oxygen reduction; however, active site complexity continues to hinder reliable interpretation. This review critiques correlation‐based approaches and highlights the importance of orthogonal experimental designs, standardized catalyst passports ...
Dayu Zhu, Hsi‐wen Wu, Xiao Wang, Jie Zhang   +3 more
wiley   +1 more source

Unravelling the Secret of Sulfur Confinement and High Sulfur Utilization in Hybrid Sulfur‐Carbons

Advanced Materials, EarlyView.
Thermal condensation of inverse vulcanized sulfur‐carbon hybrids enables a bottom‐up sulfur confinement strategy, in which a protective carbon phase is progressively constructed around sulfur species. The resulting carbon nanodomains covalently tether sulfur chains and stabilize radical intermediates. This integrated architecture effectively suppresses
Tim Horner, Enis Oğuzhan Eren, Elif Begüm Yılmaz, Jiyong Kim, Ernesto Scoppola, Alexandros Vasileiadis, Nadezda V. Tarakina, Markus Antonietti, Paolo Giusto, Evgeny Senokos   +9 more
wiley   +1 more source

Some Properties of the Speciation Model for Food-Web Structure - Mechanisms for Degree Distributions and Intervality

, 2005
We present a mathematical analysis of the speciation model for food-web structure, which had in previous work been shown to yield a good description of empirical data of food-web topology. The degree distributions of the network are derived.
A.G. Rossberg, Amaral, Bailey, Baird, Berlow, Briand, Caldarelli, Camacho, Camacho, Camacho, Cattin, Cohen, Cohen, Drossel, Drossel, Goldwasser, H. Matsuda, Hall, Havens, K. Itoh, Martinez, Memmott, Montoya, Pastor-Satorras, Pimm, Polis, Raup, Stouffer, T. Amemiya, Tokita, Vazquez, Warren, Warren, Williams, Yoshida, Yoshida   +35 more
core   +1 more source

Hybridization in parasites: consequences for adaptive evolution, pathogenesis and public health in a changing world [PDF]

, 2015
[No abstract ...
A Berry, A Koukounari, AJ Norton, AR Laird, B Schelkle, BL Webster, BL Webster, BL Webster, BR Grant, C Astrom, C Gyles, CA Machado, CD Criscione, CM Brasier, CM Lively, CM Lively, CS Clarkson, CS Wondji, D Menge, D Rollinson, D Weetman, DB Dunams-Morel, DE Neafsey, Deborah F. Smith, DR Brooks, DR Dittrich-Reed, E Inbar, E Mancini, E Redman, E Strauch, EH Stukenbrock, EJ Baack, GL Nichols, Glenn F Rall, H Krehenwinkel, H Ochman, H Ochman, HD Mawejje, HJ Müller, HV Pates, I Goodhead, J Boissier, J Davies, J Hawks, J Mallet, J Mavarez, JA Coyne, JA Patz, JC Semenza, JM Kelly, Joanne P. Webster, JP Webster, JP Webster, JT Detwiler, Kayla C. King, KD Lafferty, LA Messenger, LA Messenger, LAT Tchuente, LC Norris, LH Rieseberg, LH Rieseberg, M Arnold, M Lynch, M Schumer, M Worobey, MA Miles, MA Nowak, MB Rogers, MB Rogers, MC Fontaine, ME Grigg, MF Dybdahl, MG Taylor, Michael A. Brockhurst, MJ Gibbs, ML Arnold, ML Arnold, ML Steinauer, MW Gaunt, NH Barton, NR Sturm, NS Akopyants, O Seehausen, P Martens, P Volf, P Volf, PW Hedrick, R Abbott, RA Farrer, RB Stelkens, RB Stelkens, RDH Barrett, Rike B. Stelkens, RS Ramiro, S Edmands, S Hales, S Manguin, S Moore, T Dobzhansky, T Huyse, T Huyse, TH Le, U Chaudhry, W Alves, W Choochote, W Li, Y Lee, Y Song   +108 more
core   +2 more sources

Speciation in Howea palms occurred in sympatry, was preceded by ancestral admixture, and was associated with edaphic and phenological adaptation.

Molecular biology and evolution, 2019
Howea palms are viewed as one of the most clear-cut cases of speciation in sympatry. The sister species H. belmoreana and H. forsteriana are endemic to the oceanic Lord Howe Island, Australia, where they have overlapping distributions and are ...
Owen G. Osborne, A. Ciezarek, Trevor C. Wilson, D. Crayn, I. Hutton, W. Baker, C. Turnbull, V. Savolainen   +7 more
semanticscholar   +1 more source

Paving the Way to Elucidate Hg's Role in Tumorigenesis

Advanced Science, EarlyView.
Tumorigenesis can result from diverse environmental carcinogens. Among them, mercury—a lifelong bioaccumulative Group 2B carcinogen—has tumorigenic potential that remains poorly understood due to confounding co‐exposures and limited organ‐specific data.
Shouying Li, Rong Zhong, Zhenyang Yu, Hualing Fu, Jin Chen, Jia Wei, Ningwei Zhao, Le Qu, Tiantian Li, Wenli Tang, Huan Zhong   +10 more
wiley   +1 more source

Patterns of genomic differentiation between two Lake Victoria cichlid species, Haplochromis pyrrhocephalus and H. sp. ‘macula’

BMC Evolutionary Biology, 2019
Background The molecular basis of the incipient stage of speciation is still poorly understood. Cichlid fish species in Lake Victoria are a prime example of recent speciation events and a suitable system to study the adaptation and reproductive isolation
Shohei Takuno, Ryutaro Miyagi, Jun-ichi Onami, Shiho Takahashi-Kariyazono, Akie Sato, Herbert Tichy, Masato Nikaido, Mitsuto Aibara, Shinji Mizoiri, Hillary D. J. Mrosso, Semvua I. Mzighani, Norihiro Okada, Yohey Terai   +12 more
doaj   +1 more source

Adaptive responses drive the success of polyploid yellowcresses (Rorippa, Brassicaceae) in the Hengduan Mountains, a temperate biodiversity hotspot

Plant Diversity, 2022
Polyploids contribute substantially to plant evolution and biodiversity; however, the mechanisms by which they succeed are still unclear. According to the polyploid adaptation hypothesis, successful polyploids spread by repeated adaptive responses to new
Ting-Shen Han, Zheng-Yan Hu, Zhi-Qiang Du, Quan-Jing Zheng, Jia Liu, Thomas Mitchell-Olds, Yao-Wu Xing   +6 more
doaj   +1 more source