Results 161 to 170 of about 169,777 (262)

Reflections in K2

open access: yes, 2011
In this thesis we show a reflection theorem for K2. We compare the 3-rank of K2 of the ring of integers of ℚ(√-3D) to the 3-rank of K2 of the ring of integers of ℚ(√-3D) and find that they differ by at most 2. We also show by examples that the formula we obtain is optimal.
openaire   +1 more source

Coordinating Mesopore Geometry and Interfacial Water Dynamics for Iron‐Site Evolution in Nitrate Electroreduction

open access: yesAngewandte Chemie, EarlyView.
Mesopore geometry programs the working‐state interface of Fe single sites during nitrate electroreduction. Hexagonal channels reorganize interfacial water and accompany the reversible evolution of isolated Fe─O4‐like sites toward Fe─O─Fe‐like motifs, promoting successive hydrogenation toward NH3 with a Faradaic efficiency of 99.1%.
Xiangyang Liu   +8 more
wiley   +2 more sources

Accessibility and Alignment of Trans‐Cleavage Substrates Modulate the Kinetics of Cas12a Ribonucleoprotein

open access: yesAngewandte Chemie, EarlyView.
Two key binding events that collectively determine the catalytic efficiency of trans‐cleavage: (1) the substrate passing through the gap between the REC and NUC domains, determined by Kpass, and (2) the alignment of the substrate with the catalytic triad of the ribonucleoprotein, determined by Kalign.
Jianyu Hu   +3 more
wiley   +2 more sources

First chromosome-scale genome of Cornus kousa K2‡. [PDF]

open access: yesG3 (Bethesda)
Mehler TPH   +12 more
europepmc   +1 more source

Synthese einer Stabilen, Hydrophilen Trans‐Cycloocten‐Aminosäure Ermöglicht Schnelle Bioorthogonale Klick‐Chemie zur Herstellung von Antikörper‐Wirkstoffkonjugaten Mittels Erweiterung des Genetischen Codes

open access: yesAngewandte Chemie, EarlyView.
Es wird von einer neuen trans‐Cycloocten (TCO) basierten nicht‐kanonischen Aminosäure (ncAA) berichtet, die von einer hohen Hydrophilizität und bemerkenswerter Stabilität gegen trans‐cis‐Isomerisierung charakterisiert ist. Der Einbau dieser mittels Erweiterung des genetischen Codes in einen Antikörper und nachfolgende Konjugation erzeugte ein ...
Georgi R. Genov   +4 more
wiley   +1 more source

NHC‐Copper(I)‐Mediated Functionalization of White Phosphorus

open access: yesAngewandte Chemie, EarlyView.
White phosphorus is functionalized by N‐heterocyclic carbene supported copper(I) complexes through redox‐neutral steps. Treatment of the resulting complexes with electrophiles releases the ligands from the metal center as asymmetrically substituted organophosphorus butterfly compounds.
Thomas M. Horsley Downie   +4 more
wiley   +2 more sources

Grenzflächen‐Synergie zwischen Mn und Kohlenstoffnitrid ermöglicht die selektive photokatalytische C–H‐Chlorierung mittels Einzelatomkatalyse

open access: yesAngewandte Chemie, EarlyView.
Ein Mangan‐Einzelatom‐Photokatalysator auf funktionalisiertem Kohlenstoffnitrid ermöglicht die selektive, durch sichtbares Licht angetriebene C(sp2)–H‐Chlorierung. DFT‐gestützte mechanistische Untersuchungen zeigen, dass die photoinduzierte Ladungstrennung NCS aktiviert, während isolierte Mn‐Zentren Mn–Cl‐Intermediate an der Katalysatorgrenzfläche ...
Jaro Vanderghinste   +16 more
wiley   +1 more source

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