Results 31 to 40 of about 5,410 (123)
Artificial Metalloenzymes with Two Catalytic Cofactors for Tandem Abiotic Transformations
Angewandte Chemie, Volume 137, Issue 8, February 17, 2025.Sequential incorporation of an organic photocatalytic cofactor and a metal cofactor into streptavidin leads to artificial metalloenzymes (ArMs) that catalyze tandem abiotic transformations such as enantioselective formal C−H hydroxylation and photooxidation‐Michael addition. This work introduces a programmable approach for the construction of ArMs that
Weijin Wang +6 more
wiley +2 more sources
The puzzle of the CNO isotope ratios in AGB carbon stars
, 2016 Previous determinations of the oxygen isotopic ratios in AGB carbon stars were at odds with the existing theoretical predictions. We aim to redetermine the oxygen ratios in these stars using new spectral analysis tools and further develop discussions on ...
Abia, Carlos +3 more
core +1 more source
Refining the Oort and Galactic constants
, 1998 The local stellar kinematics of the Milky Way offer a useful tool for studying the rotation curve of the Galaxy. These kinematics -- usually parameterized by the Oort constants A and B -- depend on the local gradient of the rotation curve as well as its ...
Merrifield, M. R., Olling, R. P.
core +2 more sources
Trends of the major porin gene (ompF) evolution [PDF]
, 2011 OmpF is one of the major general porins of Enterobacteriaceae that belongs to the first line of bacterial defense and interactions with the biotic as well as abiotic environments.
Isaeva, Marina P. +4 more
core +1 more source
, 2008 In close binary systems, rotation and tidal forces of the component stars deform each other and destroy their spherical symmetry. We present new models for low-mass, pre-main sequence stars that include the combined distortion effects of tidal and ...
Alexander +89 more
core +1 more source
European Research on Management and Business EconomicsTo combat firms exploiting transfer pricing as a tool for tax avoidance, the Organisation for Economic Co-operation and Development (OECD) introduced the Base Erosion and Profit Shifting Action 13 (BEPS 13), enhancing tax transparency and the exchange of
Annelies Roggeman +2 more
doaj +1 more source
A new bound for the 2/3 conjecture [PDF]
, 2012 We show that any n-vertex complete graph with edges colored with three colors contains a set of at most four vertices such that the number of the neighbors of these vertices in one of the colors is at least 2n/3. The previous best value, proved by Erdos,
Baber +6 more
core +7 more sources
Zoologica Scripta, Volume 55, Issue 1, Page 37-51, January 2026.ABSTRACT The status of the six traditionally recognised European Vallonia taxa is considered based on mtDNA and nDNA sequences from five independently sorting loci in combination with morphometric landmark analyses conducted on genetically confirmed shells. These analyses document that only two species are valid (V. costata and V.
Jeffrey C. Nekola +7 more
wiley +1 more source
Discovery of a Novel Non‐Nucleoside Inhibitor of RNA‐Dependent RNA Polymerase Against Dengue Virus
MedComm, Volume 6, Issue 12, December 2025.PN‐1, a novel non‐nucleoside inhibitor of the dengue virus RNA‐dependent RNA polymerase (RdRp), was identified from Panax notoginseng. This compound selectively targets the DENV‐2 NS5 RdRp, inducing conformational changes that inhibit enzymatic activity, thereby suppressing DENV replication both in vitro and in vivo.
Xue‐Mei He +11 more
wiley +1 more source
Earth System GovernanceThis paper investigates the implications of implementing the Just Energy Transition Partnership (JETP) in South Africa by exploring the factors that are at work when donors and recipients interact with each other.
Heiner von Lüpke
doaj +1 more source