Results 171 to 180 of about 221,519 (349)

Veneers or crowns? [PDF]

British Dental Journal, 2021
M. Kelleher, T. Burke
openaire   +2 more sources

Causes of delayed angiosperm diversification: The photosynthetic revolution, increased opportunity costs of anti‐herbivore defenses, selection for qualitative toxins, and acceleration of plant–herbivore coevolution

American Journal of Botany, EarlyView.
Abstract Why did it take so long for angiosperms to diversify after they arose? Here I consider the indirect but potentially crucial impact of the “photosynthetic revolution” on plant–herbivore coevolution. Increased vein density in fossil leaves implies a doubling in photosynthesis 125–100 million years ago.
Thomas J. Givnish
wiley   +1 more source

Control of Tetrazine Bioorthogonal Reactivity by Rotaxanation

Angewandte Chemie, EarlyView.
Control of tetrazine‐mediated inverse electron demand Diels–Alder (IEDDA) reaction has been achieved by rotaxanation. Tetrazine rotaxanes were synthesized in high yield and they displayed a much slower kinetics compared to the corresponding thread. Mechanical bond disassembly upon the right stimulus activates reactivity.
Carlos Fumero‐Medina, Yaiza Pérez‐Pérez, Lidia A. Pérez‐Márquez, Diego Álvarez de la Rosa, Teresa Giráldez, Nieves Rodríguez Paz, Jorge Pasán, Fernando Lahoz, David Tejedor, Jimena Scoccia, Romen Carrillo   +10 more
wiley   +2 more sources

ATTENUATION OF CROWN GALL BACTERIA BY CULTIVATION IN MEDIA CONTAINING GLYCINE

, 1952
J. M. Van Lanen, I. L. Baldwin, A. J. Riker   +2 more
openalex   +1 more source

Food of a Yellow-Crowned Night Heron [PDF]

, 1946
Homer F. Price
openalex   +1 more source

Co‐flowering with congeners does not affect buzz‐pollinator specialization and pollination performance in Rhexia mariana, but does affect floral trait variance

American Journal of Botany, EarlyView.
Abstract Premise Pollinator‐mediated plant‐plant interactions may be negative (i.e., competition, reproductive interference) or positive (i.e., facilitation). Especially when co‐flowering with close relatives (e.g., congeners), negative interactions through reproductive interference may be strong and result in floral trait divergence and increased ...
Agnes S. Dellinger, Karolina Gwardiak, Ash Kerber, Viktoria C. Wieser, Karen D. Pérez‐Arroyo   +4 more
wiley   +1 more source

THE IMPLANTATION OF STERILIZED ROOTS OF ANIMALS' TEETH CARRYING ARTIFICIAL CROWNS. [PDF]

, 1898
W E Walker
openalex   +1 more source

Supercurrents and Tunneling in Massive Many‐Vortex Necklaces and Star‐Lattices

Annalen der Physik, EarlyView.
It is numerically shown how massive many‐vortex systems, in a mixture of Bose–Einstein condensates, can host the bosonic tunneling of the infilling component in an almost‐periodic way when the vortices are organized in necklaces or star‐lattices. The purpose is to explore the conditions for the onset of Josephson supercurrents in rotating many‐vortex ...
Alice Bellettini, Vittorio Penna
wiley   +1 more source

Stereoselective Synthesis of Alkenyl Fluorides and Alkynes by Defluoro Coupling of Trifluoromethyl Arenes

Angewandte Chemie, EarlyView.
A practical, stereoselective method for synthesizing tri‐ and tetra‐substituted 1,2‐fluoro‐borylalkenes and alkynes via defluorinative C–C coupling of CF3–arenes with organodiboron reagents is reported. Enabled by a Lewis base activator, products are formed in up to 94% yield and >98:2 Z/E selectivity.
José L. Rosario‐Collazo, Courtney Westlund, Hawa Keita, Simon J. Meek   +3 more
wiley   +2 more sources

Three‐Segment Protein Labeling Using a Highly Efficient and Cysteine‐Less Split Intein Identified with Computational Prediction of Aggregation Properties

Angewandte Chemie, EarlyView.
Tandem protein trans‐splicing (PTS) assembles a protein from three segments. Expanding this technology to individually treat cysteines in each segment, for example, for chemical labeling using thiol bioconjugation, the authors identify a second, highly efficient cysteine‐less split intein.
Christoph Humberg, Jonas Kröger, Shmuel Pietrokovski, Henning D. Mootz   +3 more
wiley   +2 more sources