Results 91 to 100 of about 25,279 (299)
Dual‐Function Cosubstrates Enable Threonine Dehydrogenase‐Driven Chemoenzymatic Pyrrole Synthesis
Angewandte Chemie International Edition, EarlyView.Classical Knorr chemistry meets contemporary biocatalysis. Threonine dehydrogenase generates aminoacetone from l‐threonine, which is directly intercepted in a chemoenzymatic Knorr pyrrole synthesis. A dual‐function β‐dicarbonyl substrate serves as both pyrrole precursor and hydride acceptor for integrated NAD+ recycling, affording substituted pyrroles ...
Valentina Jurkaš +8 more
wiley +1 more source
Point-of-care chest ultrasound in the Neonatal Intensive Care Unit
Journal of Pediatric and Neonatal Individualized Medicine, 2013 Chest ultrasound is a useful diagnostic tool in adult emergency medicine. Echography does not generate a clear image of the lung but is able to generate artifacts that are combined in disease-specific profiles.
Francesco Raimondi +7 more
doaj +1 more source
The Anatomical Record, EarlyView.Abstract Nineteenth century excavations of the Ciply‐Malogne Phosphatic Chalk Formation in Hainaut, Belgium, yielded over 50 partial mosasaur skeletons, the majority of which were referred to the species Mosasaurus lemonnieri Dollo, 1889. In the years since, this taxon has experienced a complicated taxonomic history, and its exceptional hypodigm has ...
Henry S. Sharpe +3 more
wiley +1 more source
Life, 2014 The asteroid (4) Vesta, parent body of the Howardite-Eucrite-Diogenite meteorites, is one of the first bodies that formed, mostly from volatile-depleted material, in the Solar System. The Dawn mission recently provided evidence that hydrated material was
Diego Turrini, Vladimir Svetsov
doaj +1 more source
MDL‐800‐induced SIRT6 activation decreases age‐associated osteoarthritis in mice
Arthritis &Rheumatology, Accepted Article.Objective SIRT6 is a nuclear‐localized histone deacetylase that regulates multiple pathways associated with aging. This study aimed to determine whether systemic administration of a small molecule activator of SIRT6, MDL‐800, decreases the severity of age‐associated osteoarthritis (OA) in mice.
Matheus Moreira Perez +13 more
wiley +1 more source
Business Strategy and the Environment, EarlyView.ABSTRACT The EU's Corporate Sustainability Reporting Directive (CSRD) emphasises the importance of corporate sustainability reporting on biodiversity and ecosystems, particularly specified in the European Sustainability Reporting Standard E4 (ESRS E4).
Andreas Barth +4 more
wiley +1 more source
Search for the True Parent Body of the Phoenicid Meteor Shower
The Astronomical JournalIn 2024, Ďurišová et al. found that the meteor shower Phoenicids, IAU No. 254, code PHO, can originate in the nuclei of three comets, 46P/Wirtanen, 104P/Kowal 2, and 289P/Blanpain.
Martina Kováčová +2 more
doaj +1 more source
OORT-Cloud and Kuiper-Belt Comets [PDF]
, 1998 This paper follows the broadly accepted theory that Oort-Cloud Comets originated in the Solar Nebula in the general region where the major planets, Jupiter and Saturn, were formed while the Kuiper-Belt Comets originated farther out where the temperatures
Whipple, Fred L.
core
Chemistry – A European Journal, EarlyView.Cystine is unique among amino acids, in that the disulfide bond can allow intramolecular peptide bond formation. This cyclization offers potential advantages for intramolecular coupling selectivity in prebiotic peptide formation. ABSTRACT Treatment of cystine (the disulfide‐linked dimer of cysteine) with carbonyl sulfide (COS) results in the formation ...
Avinash Vicholous Dass +5 more
wiley +1 more source
On observing comets for nuclear rotation [PDF]
, 1981 The prevalent non-gravitational motions among comets demonstrate that the sublimination does not reach a maximum at the instant of maximum insolation on the nucleus. The occurrence of halos or "parabolic" envelopes in the comae of some comets and of jets,
Whipple, F. L.
core