Search Results - "Baldwin, Jack"
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The metallicities of the broad emission line regions in the nitrogen-loudest quasars
Published in Monthly notices of the Royal Astronomical Society (21-03-2014)“…We measured the metallicity Z in the broad emission-line regions (BELRs) of 43 Sloan Digital Sky Survey (SDSS) quasars with the strongest N iv] and N iii]…”
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2
Outflows from active galactic nuclei: the BLR-NLR metallicity correlation
Published in Monthly notices of the Royal Astronomical Society (11-03-2014)“…The metallicity of active galactic nuclei (AGNs), which can be measured by emission line ratios in their broad- and narrow-line regions (BLRs and NLRs),…”
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3
Enantiospecific, Biosynthetically Inspired Formal Total Synthesis of (+)-Liphagal
Published in Organic letters (21-05-2010)“…A biosynthetically inspired synthesis of (+)-liphagal has been achieved from (+)-sclareolide in 13 steps (9% overall yield). The key step is a biomimetic ring…”
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4
Interpreting the ionization sequence in AGN emission-line spectra
Published in Monthly notices of the Royal Astronomical Society (01-01-2014)“…We investigate the physical cause of the great range in the ionization level seen in the spectra of narrow-lined active galactic nuclei (AGN). We used a…”
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Biomimetic Synthesis of Polycyclic Polyprenylated Acylphloroglucinol Natural Products Isolated from Hypericum papuanum
Published in Organic letters (06-08-2010)“…Biomimetic syntheses of three polycylic polyprenylated acylphloroglucinol natural products isolated from Hypericum papuanum, ialibinone A, ialibinone B, and…”
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Interpreting the ionization sequence in star-forming galaxy emission-line spectra
Published in Monthly notices of the Royal Astronomical Society (01-05-2016)“…High-ionization star-forming (SF) galaxies are easily identified with strong emission-line techniques such as the BPT diagram, and form an obvious ionization…”
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First-principles high pressure structure searching, longitudinal-transverse mode coupling and absence of simple cubic phase in sulfur
Published in New journal of physics (01-02-2020)“…We use first-principles density functional theory to conduct an extensive structure search using the AIRSS package for elemental sulfur in the range 50-550…”
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A Short Biomimetic Synthesis of the Meroterpenoids Guajadial and Psidial A
Published in Organic letters (16-04-2010)“…The biosynthesis of the meroterpenoid guajadial was previously hypothesized to occur via a hetero-Diels−Alder reaction between caryophyllene and an o-quinone…”
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Terminally Truncated Isopenicillin N Synthase Generates a Dithioester Product: Evidence for a Thioaldehyde Intermediate during Catalysis and a New Mode of Reaction for Non‐Heme Iron Oxidases
Published in Chemistry : a European journal (18-09-2017)“…Isopenicillin N synthase (IPNS) catalyses the four‐electron oxidation of a tripeptide, l‐δ‐(α‐aminoadipoyl)‐l‐cysteinyl‐d‐valine (ACV), to give isopenicillin N…”
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Biomimetic synthetic studies on meroterpenoids from the marine sponge Aka coralliphaga: Divergent total syntheses of siphonodictyal B, liphagal and corallidictyals A–D
Published in Bioorganic & medicinal chemistry (15-06-2019)“…[Display omitted] The marine sponge Aka coralliphaga is a rich source of biologically active and structurally interesting meroterpenoids. Inspired by these…”
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STAR FORMATION IN SELF-GRAVITATING DISKS IN ACTIVE GALACTIC NUCLEI. II. EPISODIC FORMATION OF BROAD-LINE REGIONS
Published in The Astrophysical journal (20-02-2012)“…This is the second in a series of papers discussing the process and effects of star formation in the self-gravitating disk around the supermassive black holes…”
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12
Classification and analysis of emission-line galaxies using mean field independent component analysis
Published in Monthly notices of the Royal Astronomical Society (21-04-2013)“…We present an analysis of the optical spectra of narrow emission-line galaxies, based on mean field independent component analysis (MFICA), a blind source…”
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13
SHORT-TIMESCALE MONITORING OF THE X-RAY, UV, AND BROAD DOUBLE-PEAK EMISSION LINE OF THE NUCLEUS OF NGC 1097
Published in The Astrophysical journal (10-02-2015)“…Recent studies have suggested that the short-timescale ([<, ~]7 days) variability of the broad (~10,000 km s super(-1)) double-peaked H alpha profile of the…”
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14
TWO-COMPONENT STRUCTURE OF THE Hβ BROAD-LINE REGION IN QUASARS. I. EVIDENCE FROM SPECTRAL PRINCIPAL COMPONENT ANALYSIS
Published in The Astrophysical journal (01-12-2012)Get full text
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15
Retraction of “Biomimetic Total Synthesis of Himbacine”
Published in Organic letters (19-06-2015)Get full text
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16
Significant Enhancement of the Stille Reaction with a New Combination of Reagents-Copper(I) Iodide with Cesium Fluoride
Published in Chemistry : a European journal (20-05-2005)“…The combination of copper(I) iodide and cesium fluoride significantly enhances the Stille reaction. After extensive optimisation, a variety of electronically…”
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17
s-Process Abundances in Planetary Nebulae
Published in The Astrophysical journal (20-04-2007)“…The s-process shoud occur in all but the lower mass progenitor stars of planetary nebulae, and this should be reflected in the chemical composition of the gas…”
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Increasing frailty is associated with higher prevalence and reduced recognition of delirium in older hospitalised inpatients: results of a multi-centre study
Published in European geriatric medicine (01-04-2023)“…Key summary points Aim Describe frailty in hospital inpatients with delirium. Findings Patients with delirium were more frail than patients without delirium…”
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The crystal structure of an isopenicillin N synthase complex with an ethereal substrate analogue reveals water in the oxygen binding site
Published in FEBS letters (19-08-2013)“…•IPNS crystallises anaerobically with a substrate analogue that contains a methyl ether.•It allows an extra water ligand to bind to the active site iron.•This…”
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Tris-Silanide f‑Block Complexes: Insights into Paramagnetic Influence on NMR Chemical Shifts
Published in JACS Au (22-07-2024)“…The paramagnetism of f-block ions has been exploited in chiral shift reagents and magnetic resonance imaging, but these applications tend to focus on 1H NMR…”
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