Results 41 to 50 of about 241,773 (303)

C2α‐carbanion‐protonating glutamate discloses tradeoffs between substrate accommodation and reaction rate in actinobacterial 2‐hydroxyacyl‐CoA lyase

FEBS Open Bio, EarlyView.
Enzymes of the 2‐hydroxyacyl‐CoA lyase group catalyze the condensation of formyl‐CoA with aldehydes or ketones. Thus, by structural adaptation of active sites, practically any pharmaceutically and industrially important 2‐hydroxyacid could be biotechnologically synthesized. Combining crystal structure analysis, active site mutations and kinetic assays,
Michael Zahn, Barbara Seroka, Ryszard Lazny, Zenon Lotowski, Thore Rohwerder   +4 more
wiley   +1 more source

Double Neutron Star Formation: Merger Times, Systemic Velocities, and Travel Distances

, 2019
The formation and evolution of double neutron stars (DNS) have traditionally been studied using binary population synthesis. In this work, we take an alternative approach by focusing only on the second supernova (SN) forming the DNS and the subsequent ...
Andrews, Jeff J., Zezas, Andreas
core   +1 more source

The brown dwarf desert as a consequence of orbital migration [PDF]

, 2001
We show that the dearth of brown dwarfs in short-period orbits around Solar-mass stars - the brown dwarf desert - can be understood as a consequence of inward migration within an evolving protoplanetary disc.
Armitage, Armitage, Artymowicz, Basu, Bonnell, Bouvier, Bryden, Béjar, Clarke, Duquennoy, Gizis, Goldreich, Gould, Haisch, Halbwachs, Hartmann, Ian A. Bonnell, Johnstone, Kirkpatrick, Kirkpatrick, Königl, Lin, Lin, Lin, Marcy, Marcy, Martín, Osterloh, Papaloizou, Philip J. Armitage, Reipurth, Reipurth, Shu, Stassun, Syer, Taam, Trilling, Trilling   +37 more
core   +3 more sources

Geometry of Wave-Formed Orbital Ripples in Coarse Sand [PDF]

Journal of Marine Science and Engineering, 2015
Using new large-scale wave-flume experiments we examine the cross-section and planform geometry of wave-formed ripples in coarse sand (median grain size D50 = 430 μm) under high-energy shoaling and plunging random waves. We find that the ripples remain
Gerben Ruessink, Joost Brinkkemper, Maarten Kleinhans   +2 more
openaire   +4 more sources

Analyzing Electronic Excitations and Exciton Binding Energies in Y6 Films

Advanced Functional Materials, EarlyView.
The Y6 molecule is used for increasing the efficiency of organic solar cells. The exciton binding energy is calculated for ensembles of Y6 molecules that are representative of the typically used films. The calculations show that the excitons typically spread out over many molecules.
Sahar Javaid Akram, Sophie Meißner, Stephan Kümmel   +2 more
wiley   +1 more source

Investigation using single point incremental forming (SPIF) to fabricate patient-specific, titanium orbital floor implants [PDF]

MATEC Web of Conferences
The floor of the human orbit is composed of thin bone that is prone to traumatic fracture. This leads to a loss of support for the eye, which can cause vision changes. Therefore, fractures may need surgical reconstruction using a thin, sheet-like implant.
Mamros Elizabeth M., Blaha Lauren E., Kauffman Christian A.   +2 more
doaj   +1 more source

Crystal structure, DFT and MEP study of (E)-2-{[(3-chlorophenyl)imino]methyl}-6-methylphenol

Acta Crystallographica Section E: Crystallographic Communications, 2020
In the crystal structure of the title compound, C14H12ClNO, the molecules are linked through C—H...O hydrogen bonds and C—H...π interactions, forming chains parallel to the [010] direction.
Hanife Saraçoğlu, Onur Erman Doğan, Tuğgan Ağar, Necmi Dege, Turganbay S. Iskenderov   +4 more
doaj   +1 more source

Bias‐Free Highly Efficient and Stable Dye‐Sensitized Photoelectrochemical Cells via Cascade Charge Transfer

Advanced Functional Materials, EarlyView.
A buried‐junction DSPEC design is introduced that leverages cascade charge transfer to enhance efficiency, stability, and versatility. This approach facilitates effective charge transfer and minimizes recombination losses, leading to significant improvements.
Jun‐Hyeok Park, Kyounglim Kim, Jinyoung Lee, Sarang Kim, Gwangsu Yoon, So Yeon Yoon, Jeong Kyeong Lee, Ji‐Wook Jang, Tae‐Hyuk Kwon   +8 more
wiley   +1 more source

Planets in triple star systems--the case of HD188753

, 2005
We consider the formation of the recently discovered ``hot Jupiter'' planet orbiting the primary component of the triple star system HD188753. Although the current outer orbit of the triple is too tight for a Jupiter-like planet to have formed and ...
Duquennoy A., Griffin R. F., Heggie D. C., Loktin A., Simon F. Portegies Zwart, Stephen L. W. McMillan   +5 more
core   +2 more sources

Intermolecular Interactions as Driving Force of Increasing Multiphoton Absorption in a Perylene Diimide‐Based Coordination Polymer

Advanced Functional Materials, EarlyView.
This study uncovers the unexplored role of intermolecular interactions in multiphoton absorption in coordination polymers. By analyzing [Zn2tpda(DMA)2(DMF)0.3], it shows how the electronic coupling of the chromophores and confinement in the MOF enhance two‐and three‐photon absorption.
Simon Nicolas Deger, Anna Mauri, Yang Cui, Sebastian Josef Weishäupl, Ali Deniz Özdemir, Hamad Syed, Aleksandr Ovsianikov, Wolfgang Wenzel, Alexander Pöthig, Jürgen Hauer, Mariana Kozlowska, Roland Augustinus Fischer   +11 more
wiley   +1 more source